Hello! This is Kakeru Koumuten Co., Ltd.!
We are Kakeru Koumuten, a specialist in exterior renovations! We receive many requests for roof renovations and repairs within Sagamihara City.
On this page, we will explain important points and comparison points when obtaining estimates for roof renovations in Sagamihara City!
To conclude what is most important in roof renovation work,
be sure to obtain estimates from at least three companies.
Of course, when obtaining estimates, it is better if the costs are low, but deciding on a contractor based solely on the estimate cost can also be dangerous.
Roof renovation work, excluding partial roof repair work, can mainly be divided into the following three types.
・Roof overlay (cover method) work
・Roof replacement work
・Roof painting work
The above works are comprehensive roof renovation projects, costing hundreds of thousands to millions of yen.
When it comes to roof overlay or replacement work, it is crucial to compare and confirm not only the “main roofing material” but also the “sub-materials” and “processes” to avoid mistakes.
It is necessary to carefully consider roof renovation work to avoid regrets in a few years.
To confidently request a roof renovation, it is important to identify a reliable contractor.
To identify a reliable contractor, you must obtain estimates from the contractors you are interested in and consider them based on those estimates.
That said, among those who are requesting roof renovation work for the first time,
there are likely many who have such questions.
In this article, we will discuss how to determine the content of roof renovation work, as well as the points and important items to compare in actual roof renovation estimates for each type of roof renovation work!
Roof Renovation Work Content Determination and
Points and Important Items for Comparing Actual Roof Renovation Estimates
will be explained in detail for each type of roof renovation work.
目次
- 1 7 Points You Should Know When Getting a Roof Work Estimate
- 1.1 1. Always obtain multiple estimates and compare them
- 1.2 2. Check if the estimate details differ too much from other companies
- 1.3 3. Check if there is a breakdown of materials and costs
- 1.4 4. Check if insurance or subsidies from Sagamihara City can be used
- 1.5 Subsidy Program for Seismic Diagnosis and Reinforcement Work for Wooden Houses
- 1.6 5. Is the roof renovation aligned with your life plan?
- 1.7 6. Check the warranty and after-support details
- 1.8 7. Confirm that the construction plan is suitable for the location and natural environment of Sagamihara City
- 2 【Sagamihara City】 Roof Renovation Estimation Procedure
- 3 Comparison Points for Each Roof Renovation Estimate to Check
- 3.1 1. Comparison Points for Roof Painting Estimate Items to Check
- 3.2 2. Comparison Points for Roof Overlay (Cover Method) Estimate ItemsComparison Points
- 3.2.1 1. Dismantling Existing Ridge and Snow Stops
- 3.2.2 2. Underlayment Installation (Roofing Sheet)
- 3.2.3 3. Flashing (valley flashing, decorative flashing, eave flashing, waste board flashing, etc.)
- 3.2.4 4. Roof Installation
- 3.2.5 5. Snow Guards
- 3.2.6 6. Ridge Substructure (Nail Board)
- 3.2.7 7. Installation of Purlin Flashing and Rain Diverter Flashing
- 3.2.8 8. Sealing Material
- 3.3 3. Comparison Points for Quotation Items in Roof Re-roofing Work Comparison Points
- 4 Summary
- 5 Service Areas
7 Points You Should Know When Getting a Roof Work Estimate
The points you should know when getting a roof renovation estimate can be broadly divided into the following six categories.
1. Obtain multiple estimates and compare them
2. Check if the contents of the estimate differ too much from other companies
3. Carefully check if there is a breakdown of materials and other details
4. Confirm if insurance or subsidies from Sagamihara can be used
5. Verify if the construction content matches your life plan
6. Check the details of warranties and after-sales support
7. Confirm if the plan is suitable for the location and natural environment of Sagamihara City
We will explain each point in detail!
1. Always obtain multiple estimates and compare them
As mentioned earlier, the most important thing in roof renovation work is obtaining multiple estimates.
Obtaining multiple estimates means requesting estimates from several contractors and comparing them.
There are many contractors operating within Sagamihara City, and even for the same work content, the construction methods and materials used (such as auxiliary materials) can differ from one contractor to another.
Therefore, the costs can vary significantly depending on the contractor you choose.
If you decide based on just one estimate, you may not realize that you are being charged more than the market rate, even if the work requested is the same.
By comparing multiple companies, you can understand the appropriate construction content and price range.
If you proceed without obtaining multiple estimates,
“There might have been a cheaper contractor…”
“I experienced leaks before the promised durability period…”
“I contacted them about a defect, but couldn’t get in touch…”
As such, the possibility of failure or regret increases, which is why we at Kakeru Koumuten Co., Ltd. recommend getting multiple estimates to all our customers.
Some contractors may strongly dislike multiple estimates and may pressure you with statements like,
“If you sign now, you can get a discount”
“Material prices are going up”
“If you don’t start the work soon, you’ll need even more expensive repairs”
It’s important not to rush into a contract and to take the time to get multiple estimates!
If you are experiencing leaks, it’s crucial to perform temporary repairs and make a calm decision!
Kakeru Koumuten can also provide emergency leak repairs only!
If you are in Sagamihara City, we can reach you in as little as 20 minutes!
2. Check if the estimate details differ too much from other companies
When getting multiple estimates, it’s important to check if the details differ significantly from other companies.
It’s not uncommon for the construction area to be excessively large or for the prices to be too high.
While it’s not necessarily bad for there to be differences in price or construction details, make sure to confirm with the contractor the clear reasons for any discrepancies.
If the price is low but the estimate has extremely few items listed, there may be a possibility that necessary materials have been omitted to cut costs, so be cautious!
3. Check if there is a breakdown of materials and costs
When you receive a roofing renovation estimate from a contractor, make sure to check if there is a detailed breakdown.
Some contractors may only list “one set,” but this does not clarify what and how much money is being spent.
Moreover, if the contractor can freely adjust the amounts, there is a higher chance of price increases.
We recommend contractors who provide a detailed breakdown of costs.
Especially for roofing work, be sure to check the types of roofing sheets and ridge materials (nail boards)!
Since roofing sheets and ridge materials cannot be checked after installation, ensure that inexpensive materials are not being used to cut costs!
Contractors who clarify their pricing will give you more peace of mind when entrusting them with your project.
4. Check if insurance or subsidies from Sagamihara City can be used
To reduce the cost of roofing work, let’s check with the contractor whether fire insurance or subsidies can be utilized.
For example, if the roof is damaged due to a typhoon or strong winds, there is a possibility that part or all of the repair costs can be covered by fire insurance.
Additionally, roof painting using heat-insulating paint or roof replacement work aimed at improving seismic performance may be eligible for subsidies from local governments.
Using fire insurance or subsidies requires separate procedures.
If the contractor has previously utilized fire insurance or subsidies for past roofing work, you can trust them with confidence.
Subsidies and Grants That May Be Applicable for Roof Renovation in Sagamihara City
In Sagamihara City, the following subsidies may be available for roof replacement work.
For details, please contact our company or the respective local government.
Subsidy Program for Seismic Diagnosis and Reinforcement Work for Wooden Houses
Eligibility Criteria
Must be owned by the applicant
Located within the city
Single-family homes
Constructed before or started construction on May 31, 1981
Built using traditional frame construction or wall frame construction methods
Subsidy Amount
The subsidy amount for seismic diagnosis is as follows.
Please note that the cost for seismic diagnosis is a fixed amount of 108,900 yen (tax included) per building.
The subsidy amount for seismic reinforcement work is as follows.
Subsidy Amount for Seismic Reinforcement Work
| Eligible Recipients | Subsidy Amount | Maximum Subsidy Amount |
|---|---|---|
| Those who conducted a seismic diagnosis using the subsidy and received a structural score of less than 1.0 | 1/2 of the cost (excluding tax) for seismic reinforcement work |
500,000 yen |
| Of the above, for households with elderly individuals (65 years and older) | Amount with an additional 200,000 yen added |
700,000 yen |
Subsidy Amount for Seismic Diagnosis
| Subsidy Amount | Out-of-Pocket Amount | Seismic Diagnosis Cost |
|---|---|---|
| 73,000 yen | 35,900 yen | 108,900 yen |
For more details about the Sagamihara City Housing Earthquake Resistance Subsidy, please click here.
5. Is the roof renovation aligned with your life plan?
When considering construction, it is necessary to confirm
“Is the roof renovation in line with your life plan and requests?”
“I plan to demolish the house or move in 10 years”
“The second floor is hot, and I am considering a roof renovation”
“I am considering a roof renovation due to a leak”
These are some of the reasons or concerns that may lead you to consider a roof renovation.
For example, if you have decided to move or demolish in 10 years, using highly durable roofing materials with a lifespan of over 40 years, such as the roof overlay (cover method) or roof replacement work, would be awaste of money.
You may need to consider using roofing materials with a shorter lifespan to lower costs, or roof painting as one of the options.
Similarly, if you are looking to improve heat resistance and insulation through a roof renovation, using standard roof painting or low-insulation roofing materials for replacement or overlay will not achieve the intended purpose, rendering the work unnecessary.
Additionally, for customers considering roof painting, the most important thing to pay attention to is the type of roofing material currently used on the building.
When painting the roof, if the existing roofing material is slate (colonial) roofing, there are roofing materials that cannot be painted, so it is necessary to confirm the type of existing roofing material.
If you paint roofing materials such as “Colonial NEO” or “Pamir” that cannot be painted, it will result in wasted construction costs.
There are many contractors who will casually propose painting on roofing materials that cannot be painted, so caution is necessary.
For roofing materials that cannot be painted, let’s proceed with appropriate roof renovations such as “roof overlay (cover method)” or “roof replacement”!
Click here for more details on roofing materials that cannot be painted!
6. Check the warranty and after-support details
Depending on the construction content, there is a possibility that the work may not go as the customer wishes. It is recommended to choose a contractor who explains the warranty and after-support in advance, just in case any troubles arise.
When it comes to warranty details, it is important to confirm not only the warranty period but also how far the coverage extends, such as “leakage warranty” and “detachment of roofing materials and accessories.”
How long is the warranty period? What kind of after-support is available? Let’s check these points at the time of the estimate.
When using the overlay method or re-roofing, be sure to obtain a “manufacturer’s warranty.”
7. Confirm that the construction plan is suitable for the location and natural environment of Sagamihara City
The ground in Sagamihara City, particularly in Chuo-ku and Minami-ku, is mostly located on the “Sagamihara Plateau,” which generally has strong resistance to earthquakes and liquefaction.
However, in some mountainous areas of Midori-ku and low-lying areas around the Sagami River and Sakai River, there is a tendency for stronger shaking during significant earthquakes and a higher risk of liquefaction.
Considering the characteristics of these regions, it is necessary to choose roofing materials and roofing renovation methods with earthquake resistance in mind!
To enhance earthquake resistance, it is effective to “reduce the weight of the roof.” Therefore,
“use lightweight Galvalume steel roofing materials”
“perform re-roofing instead of the overlay method”
are also considerations for earthquake resistance!
Always confirm whether the plan is suitable for the building’s location and conditions!
Kakeru Koumuten Co., Ltd. will propose the optimal roof renovation considering the customer’s needs, life plan, and location conditions!
【Sagamihara City】 Roof Renovation Estimation Procedure
We will explain in detail the procedure for requesting an estimate for roof renovation.
Specifically, the process is as follows.
1. Search for contractors that serve Sagamihara City
2. Request an estimate
3. Have a site survey conducted
4. Compare the estimates
Most contractors will generally provide services for free, but it is reassuring to confirm whether there will be any costs involved!
Next, we will explain in detail about the estimates when carrying out roofing work.
1. Research contractors that serve Sagamihara City
Nowadays, most contractors provide information on the internet or through signage, so you can research there.
Additionally, when looking for contractors, it’s advisable to obtain multiple estimates and explore several options.
By keeping in mind the seven points mentioned earlier, you can reduce the likelihood of making a mistake.
In the case of the internet, there are comparison sites where you can check multiple contractors at the same time, but be aware that a service fee will be added to your estimate with a 100% probability.
In other cases, you may see advertisements on public transportation like buses and trains, or receive flyers at your home. If something catches your interest, it might be worth reaching out once.
That said, narrowing down from the many contractors can be quite challenging.
Therefore, it is best to read reviews on Google and similar platforms for reference and focus your inquiries on highly-rated companies.
Google reviews are difficult to remove, even negative ones, making them quite credible!
2. Request an Estimate
To narrow down quality contractors for roofing work, it is important to request estimates from at least three companies.
With only one or two companies, it becomes difficult to compare the details, increasing the likelihood of not finding a quality contractor. By obtaining estimates from three or more companies, you can compare prices, service content, and responsiveness, making it easier to find a contractor that suits your needs.
When obtaining multiple estimates, make sure to have them created under the same construction conditions.
If the conditions vary, it will be hard to compare costs and construction details due to too many differences.
3. Have a Site Survey Conducted
Once you have requested estimates, have the contractors conduct a site survey.
Since the contractor will come to your home, be sure to ask any questions you have regarding the construction at that time.
Examples of important questions to ask include:
● Communicate your requests and future life plans
● Will the construction be done by their own staff?
● Where will the materials be stored and where will the scaffolding be placed?
● If you have preferred roofing materials or paints, be sure to mention them.
● In the case of roof overlay or re-roofing work, confirm what materials will be used besides roofing materials, such as fasteners, ridge boards, sealing materials, and roofing sheets.
Additionally, be cautious of companies that provide estimates based only on floor plans or elevation drawings without measuring the actual roof.
Depending on the shape of the roof, it is difficult to accurately derive quantities from floor plans or elevation drawings, and measuring the lengths of ridges and features on-site is indeed more accurate.
Moreover, by checking the existing roofing materials, you can propose more optimal materials and construction details.
4. Compare Estimates
Once you have received estimates from multiple contractors, please compare the estimates from each company.
The three main points to pay attention to are as follows:
1. Check if the product name and manufacturer name are listed
2. Check if the area and unit price are listed
3. Check if the processes and specifications are listed
Specifically, we will explain the points to be careful about.
1. Check if the product name and manufacturer name are listed
Make sure that the paint and materials used for roofing work, as well as the manufacturer names, are detailed.
If there are any unclear parts, be sure to confirm with the contractor.
2. Check if the area and unit price are listed
Always confirm that the construction area is not abbreviated as “one set.”
Contractors that provide detailed area measurements are likely to have conducted accurate surveys and can be trusted.
If most of the area in the estimate is listed as “one set,” please be cautious.
3. Check if the processes and specifications are listed
Also, check if detailed processes such as “scaffolding assembly” and “substrate treatment” are listed.
If appropriate processes are listed, there should be at least 10 items.
If processes are grouped together as “painting work as a whole” or “roofing work as a whole,” or if the product names for the batten or roofing sheets for roof cover work or roof replacement work are not listed, it is difficult to understand the details, so caution is necessary.
Comparison Points for Each Roof Renovation Estimate to Check
Finally, we will introduce the essential items to check in the estimates for the three representative types of roof renovation work below!
If the items we will explain next are not included in the estimate, we recommend confirming with the contractor whether they are included in the work!
① Roof Painting
② Roof Cover Work
③ Roof Replacement Work
We will explain the essential items to check in the estimates for the above three types of roof renovation work!
The installation of temporary scaffolding (including mesh sheets) is a mandatory item for all works, so we will omit it from further discussion!
1. Comparison Points for Roof Painting Estimate Items to Check
First, we will explain the important items for roof painting work in detail by process!
1. High-Pressure Washing
The entire roof will be washed with high pressure. If the dirt is severe, bio-washing is recommended.
2. Protection
Areas that may get dirty during roof painting, such as near the exterior walls, will be protected.
3. Substrate Adjustment
We will scrape off the old paint and dirt that could not be removed by washing, including repairs for cracks in the roof.
Rust on metal parts will also be scraped off.
4. Rust Prevention for Metal Parts
We will apply rust prevention paint to metal parts such as sheet metal and snow guards.
If this item is not included, it is common not to apply rust prevention, which increases the likelihood of rust developing on metal parts within a few years, so caution is necessary.
5. Primer Application
There are different types of primers, and it is necessary to choose a primer suitable for the existing roofing material and its condition.
For example, metal roofs require a primer or undercoat.
If the existing roofing material is slate and has been painted with water-based paint, using a solvent-based paint without a dedicated primer can cause the paint film to shrink.
To prevent issues, it is essential to use a primer that matches the substrate and its condition to ensure the longevity of the paint film.
Be sure to understand the condition of the substrate before confirming whether a dedicated primer is being used!
6. Installation of Taspace (Separation Material)
This item is only necessary for slate roofs.
Slate roofs are designed to allow rainwater and moisture to escape from the overlaps of the roofing materials.
If the overlaps of the roofing materials are filled with paint during the roof painting process, it will reduce ventilation, leading to substrate corrosion and potentially damaging the roofing materials.
Therefore, installing taspace after the primer ensures that gaps are maintained at the overlaps of the roofing materials.
It is generally necessary to install 2 taspace units for each slate sheet, and the installation positions are predetermined.
However, taspace installation is not possible for roofing materials that are warped more than 4mm.
If the estimate does not include taspace installation, be sure to confirm the reason!
Additionally, if the “taspace installation” item does not specify the number of units, it is necessary to confirm whether the work will be done with the standard number of units.
7. Intermediate and Final Coats
Basically, roof painting involves three coats, including the primer, middle coat, and top coat.
This item is often included by most contractors, but if it’s not mentioned, be sure to confirm!
The middle and top coat paints have different durability and heat insulation characteristics, so we recommend carefully deciding which paint best meets your needs rather than just going by price.
Rafter Replacement
This is not related to the roof painting process, but if you are painting a slate roof that is over 10 years old, it is advisable to detach part of the ridge cap to check the condition of the rafters.
If the existing rafters are made of cedar, their durability is about 10 to 15 years, so replacing them together can reduce costs compared to doing a standalone rafter replacement.
Let’s at least get a quote and consider it!
There are types of rafters such as “wood” and “plastic,” and they have different durability, so
“What kind of material will be used for the new rafters?”
“Will the ridge cap fasteners be nails or screws?”
Make sure to check these points as well!
Here is the price list for Kakeru Koumuten’s roof painting work!
2. Comparison Points for Roof Overlay (Cover Method) Estimate ItemsComparison Points
The roof overlay method involves installing new roofing materials over the existing slate roof without dismantling it.
We will explain the important processes and items involved in the roof overlay method!
1. Dismantling Existing Ridge and Snow Stops
We will dismantle areas that interfere with the overlay method, such as the existing ridge cap, rafters, and snow stops.
2. Underlayment Installation (Roofing Sheet)
This involves applying a waterproof sheet to the existing roof.
This is a key item that should be carefully compared!
To conclude, there are two points to confirm:
“Is the durability of the roofing material balanced with the durability of the roofing sheet?”
“Is the roofing sheet suitable for the existing roof?”
These are the two points!
For example, if the roofing material is Super Galtect (with a durability of about 35 years) and you use regular asphalt roofing (with a durability of about 10 years), there will be a significant difference in durability between the roofing material and the roofing sheet.
Even if you use a highly durable roofing material, there may be leaks before the expected durability period, so caution is necessary.
A suitable roofing sheet for the existing roof means, for instance, if the existing roofing material is “Colonial NEO” or “Pamil”, which are fragile slate types, you need to use a self-adhesive roofing sheet specifically for the cover method, such as Tajima Roofing/Tadis Self Cover.
Therefore, identifying the existing roofing material during the on-site inspection is essential!
There are many types of underlayment materials, and each has different durability.
Since there are various types, such as heat-insulating roofing sheets, make sure to check if the roofing sheet being used meets your needs!
Additionally, if you are using a self-adhesive roofing sheet and there is a lot of moss on the existing roof, the self-adhesive roofing sheet may not adhere properly.
If the dirt is severe, it is necessary to perform high-pressure washing.
Check whether high-pressure washing is included and confirm any additional costs if high-pressure washing is required!
3. Flashing (valley flashing, decorative flashing, eave flashing, waste board flashing, etc.)
There are two points to check regarding flashing!
“Is the manufacturer’s genuine flashing being used?”
“Is the decorative flashing of the setback type being used?”
If the manufacturer’s genuine flashing is not used, there may be a difference in durability, and in case of an emergency, the manufacturer’s warranty may not apply.
Many contractors use aftermarket flashing to reduce costs, so be sure to check!
The roof overlay (cover method) may cause the roof to be higher than the existing state, which can lead to rainwater overflowing the rain gutter.
Therefore, by using setback type ornamental brackets, rainwater can be properly directed into the rain gutter.
If you are not replacing the rain gutter, be sure to check whether setback type ornamental brackets are being used!
4. Roof Installation
This section covers the installation of the main roofing materials!
What you should confirm in this section is the “fasteners” for the roofing materials!
Fasteners can be nails or screws, and they come in different materials, either iron or stainless steel.
While stainless steel screws are more expensive, they offer better wind resistance.
For buildings located near the sea or on elevated ground, we recommend using screws for better wind resistance!
If there is no mention of fasteners, confirm what type will be used,
“Are the fasteners suitable for the needs?”
“What is the additional cost if the fasteners need to be changed?”
Make sure to check thoroughly!
Aijikogyo is the manufacturer of Super Galtect.
The screws for renovations are made of stainless steel and are specifically designed for the overlay method.
It’s reassuring that they are from the same manufacturer as the roofing materials!
5. Snow Guards
Make sure to confirm whether genuine manufacturer snow guards are being used!
Using aftermarket snow guards could lead to leaks or may void the warranty, so caution is necessary!
6. Ridge Substructure (Nail Board)
The ridge substructure serves as the base for the ridge cap! It is often referred to as a nail board.
This is also a critical item to check carefully, just like the underlayment!
There are various types of ridge substructures, including “wood,” “plastic,” and “metal,” each with different durability lifespans.
We generally recommend using a ridge substructure that matches the durability lifespan of the new roofing materials.
The above photos show wooden and resin-made purlins.
The durability years of the purlins are as follows.
・Wooden (cedar) Durability approximately 10 years
・Resin-made Durability approximately 20 years
・Metal (galvalume steel) Durability approximately 30 years or more
For example, if you use a wooden purlin (durability approximately 10 years) with a Super Galtect roof material (durability approximately 35 years), you will eventually need to replace just the purlin.
Since the condition of the purlin cannot be checked from the outside, corrosion may progress unnoticed, leading to issues such as the purlin flashing being blown away.
The durability of resin-made purlins is also about 20 years, which does not match the durability of Galtect.
Heat deformation and cracking are also disadvantages of resin-made purlins.
In the case of Super Galtect, if the purlin is made of galvalume steel, its durability is equivalent, and unlike wood or resin, it does not crack, providing high wind resistance and is highly recommended!
Be sure to confirm what material is used for the purlin!
7. Installation of Purlin Flashing and Rain Diverter Flashing
What you should check here is the purlin flashing’s “fasteners” and “flashing (sealer)”!
First, for the purlin flashing fasteners, there are nails and screws with waterproof washers. If you use nails, they may come loose, and the holding power is low, leading to the purlin flashing coming off, so make sure that the fasteners used are “screws with waterproof washers”.
Also, since this is an exposed area, be sure to check whether the material is “stainless steel”!
A vent is a type of packing used to prevent rainwater from entering at the ridge.
Since it is not visible from the outside, many contractors do not install it.
If the item “vent” is not listed, let’s confirm whether it will be installed!
8. Sealing Material
Both the roof overlay (cover method) and re-roofing work require waterproofing with sealing at the rain stop and ridge sections.
The necessary confirmation for this item is the type of sealing material.
Sealing materials have a lifespan, ranging from about 8 years to 30 years.
If this sealing material deteriorates, it often leads to leaks, so it is best to use high-durability materials!
Since the number of sealing application points on the roof is not that high, using high-durability sealing does not result in a significant cost difference, so we recommend using high-durability sealing.
As shown in the table above, there is a significant difference in the lifespan between general sealing materials and high-durability sealing materials!
Here is the price list for roof overlay (cover method) work!
3. Comparison Points for Quotation Items in Roof Re-roofing Work Comparison Points
Roof re-roofing work involves dismantling the existing roofing material and installing a new roof.
The difference from the overlay method is that the existing roof is dismantled.
1. Roof Dismantling
The existing roofing materials such as tiles or slates will be stripped and dismantled.
The disposal costs of the roofing materials vary depending on the type of existing roofing materials and the presence of asbestos.
Arranged in order of the highest disposal costs for roofing materials, they are as follows:
Low Metal Roof < Slate Roof (without Asbestos) < Tile Roof < Asbestos-containing Roofing Materials High
2. Substrate Adjustment
The situation of the underlying structure may vary, but in buildings that are relatively new or have tile roofs, there is often a “distortion of the underlying structure” present.
If new roofing materials are installed without addressing the distortion, it can affect the new roofing materials as well, making adjustments to the underlying structure necessary.
3. Installation of New Underlayment (Roof Sheathing)
This involves installing new roof sheathing across the entire roof after dismantling and cleaning the existing roof.
In cases where the existing roofing material is slate or the building is relatively new, this may not be necessary.
However, if the building is older or has a tile roof, it is often required.
If it is difficult to determine the condition of the underlying structure during the estimation phase, one option is to check the existing underlayment after dismantling the roofing materials for assessment.
The subsequent steps will be the same as steps 2 to 8 of the roof overlay (cover method).
Check the price list for roof replacement work here!
Summary
There are six key points to pay particular attention to when estimating roof renovations.
1. Obtain multiple estimates and compare with other companies.
2. Check if the contents of the estimate differ too much from other companies.
3. Confirm that there is a breakdown of materials and other details.
4. Check if insurance or subsidies can be used.
5. Verify if the proposal aligns with your life plan and requests.
6. Review the warranty and after-sales support details.
By referring to the items introduced this time, it will be easier to distinguish between reputable contractors and those that are not, so please give it a try!
Additionally, roof painting, overlay methods, and replacements each have their advantages, so there may be cases where considering them over a long-term span is more cost-effective. Let’s carefully consider our options.
The important thing is to always obtain multiple estimates and never decide based solely on price!
For roof renovation estimates in Sagamihara City, contact Kakeru Koumuten
Kakeru Koumuten Co., Ltd. offers free estimates and inspections!
If you have any concerns regarding roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
We also have a branch in Machida City, and Sagamihara City is relatively close, where we perform many roofing jobs.
Kakeru Koumuten Co., Ltd. is a remodeling company strong in exterior renovations, and we carry out everything from temporary scaffolding work to roof work and exterior painting completely in-house.
We are confident that when it comes to exterior renovation work, we do not fall short compared to other companies in terms of “cost, quality, and efficiency”!
We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our appropriate proposals that match our customers’ future life plans and cost performance!
“I’m glad I asked them!” We take every request seriously to ensure that you feel this way.
We also have information on roof construction costs and pricing plans for the roof overlay (cover method), so please take a look if you are interested!
We look forward to your inquiries. Thank you very much.
Service Areas
Kakeru Koumuten Co., Ltd. can serve not only within Sagamihara City but also almost all areas of Kanagawa Prefecture and Tokyo.
Tokyo
Akishima City/Akiruno City/Adachi Ward/Arakawa Ward/Itabashi Ward/Inagi City/Edogawa Ward/Oume City/Edogawa Ward/Oume City/Ota Ward/Katsushika Ward/Kita Ward/Kiyose City/Kunitachi City/Koto Ward/Koganei City/Kokubunji City/Kodaira City/Komae City/Shinagawa Ward/Shibuya Ward/Shinjuku Ward/Suginami Ward/Sumida Ward/Setagaya Ward/Taito Ward/Tachikawa City/Tama City/Chuo Ward/Chofu City/Chiyoda Ward/Toshima Ward/Nakano Ward/Ookutama/Nishi-Tokyo City/Nerima Ward/Hachioji City/Hamura City/Higashi-Kurume City/Higashi-Murayama City/Higashi-Yamato City/Hino City/Fuchu City/Fussa City/Bunkyo Ward/Machida City/Mitaka City/Minato Ward/Musashimurayama City/Musashino City/Meguro Ward
Kanagawa Prefecture
Aikou District, Aikawa Town/Ashigarakami District, Oi Town/Ashigarakami District, Kaisei Town/Ashigarakami District, Nakai Town/Ashigarakami District, Matsuda Town/Ashigarakami District, Yamato Town/Ashigarashimo District, Hakone Town/Ashigarashimo District, Manazuru Town/Ashigarashimo District, Yugawara Town/Isehara City/Odawara City/Kamakura City/Kawasaki City/Aso Ward/Sai Ward/Takatsu Ward/Tama Ward/Nakahara Ward/Miyamae Ward/Kozu District, Samukawa Town/Zushi City/Chigasaki City/Naka District, Oiso Town/Naka District, Ninomiya Town/Hadano City/Hiratsuka City/Fujisawa City/Miura District, Hayama Town/Miura City/Nanashigara City/Yokosuka City/Yokohama City/Aoba Ward/Asahi Ward/Izumi Ward/Isogo Ward/Kanagawa Ward/Kanagawa Ward/Kanazawa Ward/Konan Ward/Kohoku Ward/Sakae Ward/Seya Ward/Tsuzuki Ward/Tsurumi Ward/Totsuka Ward/Naka Ward/Nishi Ward/Hodogaya Ward/Yokohama City, Midori Ward/Yokohama City, Minami Ward/Sagamihara City/Sagamihara City, Midori Ward/Sagamihara City, Minami Ward/Sagamihara City, Chuo Ward/EBINA City/Atsugi City
・Parts of Saitama Prefecture, Chiba Prefecture, and Yamanashi Prefecture (please consult us)
Helpful information about exterior renovations can be found here!
・Reasons why Kakeru Koumuten is chosen for roof renovations and repairs in Sagamihara City
・Self-estimate!! Easy exterior renovation estimate simulation!
・About the costs of roof overlay｜Kakeru Koumuten’s roof construction plan!
・About the costs of exterior painting｜Kakeru Koumuten’s exterior painting plan!
・About the costs of leak repairs｜Kakeru Koumuten’s leak repair plan!
・About the costs of ridge cap replacement and surface plaster｜Kakeru Koumuten’s construction plan!
・Latest｜About grants, subsidies, and reduction systems available for renovations!
・About the costs of exterior wall cleaning｜Exterior cleaning plan that does not require scaffolding!
LINE consultations are also very welcome◎
We are updating our Instagram regularly◎Please follow us, thank you◎
AAA is a young company with an average age in the early 20s, but our technology is second to none.
One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!
We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!
