Hello! I am Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
Today, I would like to introduce a project we completed in Mitaka City, Tokyo, which involved exterior renovation includingroof overlay (cover method) and joint replacement work. We have provided detailed information on the price range and construction period, so please use this as a reference for your own exterior renovation needs.
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors!
Construction Data for Mitaka City, Tokyo
| Construction Location |
| Mitaka City, Tokyo |
| Construction Details |
| Temporary scaffolding installation Roof overlay (cover method) Joint replacement |
| Existing Materials |
| Roofing Material: Colonial NEO (Non-asbestos) |
| New Materials Used |
|
Roofing Material: Aijii Industry / Super Galtect Sealing material: Auto Chemical Industry / Auton Exceed (Color: Double Gray) |
| Price Range |
| 1,000,000 – 1,100,000 |
| Construction Period |
| Approximately 2 weeks |
| Completion Month |
| November 2024 |
| Inquiry Details |
| We received an inquiry from a customer residing in Mitaka City stating, “I purchased a 21-year-old used property and am considering roof work before moving in. I would also like to know if there are other areas that need repairs!”
Upon visiting for a site survey, it appeared that the property likely had no maintenance history in the past. We proposed our most popular Super Galtect to the customer, and they decided to entrust the work to us. Additionally, we observed deterioration in the sealing material and some cracks in the siding, so we agreed to carry out repairs on those as well. |
Roof Overlay (Cover Method) Construction Procedure
1. Demolition of Existing Ridge and Snow Stops
The existing ridge base is made of cedar, which has a durability of about 10 to 15 years.
Exceeding the durability period can lead to corrosion and discoloration, resulting in the ridge flashing coming loose or being blown away.
2. Installing Roofing (Waterproof Sheet)
Tadi Self Cover is the ideal roofing sheet for the cover method of fragile slate materials, such as non-asbestos roofing materials. It serves as a secondary waterproofing layer, and as long as the roofing is solid, it basically won’t leak!
We will securely attach this to prevent it from being blown away by the wind. Since there are various durability periods and characteristics for roofing sheets, it is important to choose a roofing sheet that matches the durability of the new roofing material and the roof slope!
3. Processing of Accessories (Kera, Karakusa, Valley)
4. Main Construction (Aiji Industry / Super Galtect)
The roofing material will be secured with stainless steel renovation screws!
At the ridge, we will install the necessary underlayment to secure the ridge cap. The boards we handle include cedar, resin, and galvalume steel, three types, and this time we used galvalume steel.
Galvalume steel is expected to have three times the durability compared to cedar, and unlike resin or cedar, it does not crack, providing peace of mind!
Our original integrated waste board made of galvalume steel for the ridge underlayment is highly durable, has strong fixing power, and excellent wind resistance! Even if rainwater enters from the ridge, it has a mechanism to discharge rainwater to the outside, demonstrating high waterproofing performance!
5. Ridge Cap Processing and Sealing at Various Locations
The screws used for fastening are rust-resistant stainless steel screws with washers!
Unlike nails, screws with washers are less likely to pull out and securely fasten the ridge cap to the purlin!
Although it is not visible after installation, by attaching a face plate to the inside of the ridge cap, we enhance waterproofing! This firmly protects the ridge, which is a critical area of the roof.
5. Cleaning
About Roofing Materials
The roofing material used is Aijii Industrial’s Super Galtect. Super Galtect comes with a 15-year coating warranty and a 25-year hole warranty, and we also provide a 10-year construction warranty!
Made of SGL steel plate, it is highly resistant to rust. Insulation material is thoroughly applied from edge to edge of the roofing material, creating a metal plate that integrates steel and insulation.
When installed, insulation is applied even to the parts where the roofing materials overlap, and the surface is coated with a highly heat-reflective paint, allowing for a cool summer and warm winter experience. Additionally, it has soundproofing properties, which reduce the sound of rain.
Moreover, it is lightweight compared to other roofing materials, which reduces the sway during earthquakes, making it a good earthquake countermeasure. It excels in finish, durability, insulation, soundproofing, and wind resistance, and Super Galtect from Aijii Industrial is our most frequently used material, gaining significant attention!
Colors
■ Shade Black
■ Shade Brown
■ Shade Blue
■ Shade Moss Green
■ Shade Charcoal
■New Color Shade Wine Red
You can choose from the above 6 colors!
This time, we completed the cover work with Shade Charcoal, and it turned out very well! The customer was extremely satisfied, and I was very happy as well. Thank you very much!
Please check out other roof overlay (cover method) construction results here!
| Roof Material |
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|---|---|
| Roof Material Color |
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Joint Resealing Work Procedure
1. Removal of Existing Sealing Material
This area, referred to as sealing, caulking, or joints, is crucial as it can easily lead to water leaks and cause cracks or lifting in the exterior walls. Cracks or peeling are signs of deterioration!
2. Masking Tape Application
3. Primer Application
4. Filling with Sealing Material
This time, the sealing material used is Auto Chemical Industry / Auton Exceed in double gray. Auton Exceed has a durability of about 30 years, making it an ultra-high durability sealing material. Compared to urethane and silicone-based sealing materials, it is expected to have about 3 times the durability!
5. Finishing with a Trowel
6. Removal of Masking Tape
Leave your roofing work in Mitaka, Tokyo to Kakeru Koumuten!
Our company is based in Aoba-ku, Yokohama, but we have many construction achievements in Mitaka, Tokyo. We are happy to handle everything from roof overlay work, roof replacement, to partial roof repairs such as leak repairs.
If you have any questions like “I just want to know the estimate for roof renovation” or “I want to know about roofing materials”, please feel free to contact us!
Exterior Renovation Service Areas
Kakeru Koumuten accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Mitaka City, Tokyo Area List
Iguchi, Mitaka City / Kichijoji, Mitaka City / Osawa, Mitaka City / Kamirenjaku, Mitaka City / Kitano, Mitaka City / Shimorenjaku, Mitaka City / Shinkawa, Mitaka City / Jindaiji, Mitaka City / Nakahara, Mitaka City / Nozaki, Mitaka City / Mure, Mitaka City
Long-Term Reliability
All roofing materials we use come from reliable products that offer long-term warranties. For example, the Super Galtect we used this time comes with a 15-year paint film warranty and a 25-year hole warranty from the manufacturer. Additionally, we provide a 10-year construction warranty! This means you can use it with peace of mind for a long time after just one renovation.
Super Galtect is an excellent roofing material in terms of durability, but we also handle roofing materials with even higher durability and better insulation properties.
Summary
This concludes our exterior renovation work on the roof overlay method and joint replacement in Mitaka City, Tokyo.
Roof renovations and exterior wall painting can vary significantly depending on the existing materials, so it is essential to confirm whether the proposed paint is suitable.
Estimates and inspections are, of course, free! If you have any concerns regarding exterior renovations such as roofs, rain gutters, walls, or exteriors, please feel free to consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Complete in-house construction from temporary scaffolding to roofing and exterior wall painting! We are confident that our “cost, quality, and efficiency” are unmatched compared to other companies when it comes to exterior renovation work!
We are confident, so we welcome competitive estimates! With robust construction warranties and aftercare maintenance, we have received positive feedback for our cost performance and appropriate proposals that align with our customers’ future life plans.
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We look forward to your inquiries! Thank you very much.
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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!
