Hello!
This is Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of an exterior renovation in Midori-ku, Yokohama, Kanagawa Prefecture.
There are several types of exterior renovations, and this project involves a roof replacement (Hiranbi 220)!
We implemented leak prevention measures through the roofing work!
On this page, I will explain the actual results of the work carried out by Kakeru Koumuten!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Roof Replacement Construction Procedure
1. Existing Roof Material Demolition
2. New Sheathing Installation
3. Roofing Installation (Waterproof Sheet)
The roofing used in
It is made of modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
With a solid roofing installation serving as the primary waterproofing, there will be no leaks!
We will securely install it to prevent it from blowing away.
4. Accessory Processing (Curly Patterns & Eaves)
Before the main roofing work, we will process and install accessories such as eaves and curly patterns!
The accessories used are made of galvalume steel.
4. Main Construction (Inagaki Shouji/Hiranbi)
After processing the accessories, we will install the Hiranbi roofing up to the ridge!
Once the roofing is completed up to the ridge, we will install necessary materials called “nuki” to secure the ridge cap. There are types of nuki made from cedar and resin, and this time we used the resin type!
The resin type is expected to have three times the durability compared to the cedar type!
5. Ridge Cap Processing & Sealing at Various Locations
We will process and install the
For the wall edge, we will process and install a component called rain stop flashing.
We will use stainless steel nails and screws that are resistant to rust!
6. Cleaning
We will clean up the debris that has fallen onto the balcony and rain gutters. We will thoroughly carry out this task as nails and metal scraps can lead to injuries.
About Roofing Materials
The roofing material used is Hiranbi 220 from Inagaki Shouji.
Hiranbi 220 comes with a manufacturer warranty of 15 years for the coating and 25 years for perforation.
For re-roofing and overlay work, we also provide a 10-year construction warranty!
If there are any leaks within 10 years, we will make repairs free of charge.
Made of Galvalume steel, it is also resistant to rust.
The shaped panels are treated with iris folding and wave processing to prevent distortion and enhance strength, as well as improve water drainage and aesthetic effects.
Additionally, it excels in finish, durability, sound insulation, and wind resistance, and due to its lightweight compared to other roofing materials, it reduces the sway during earthquakes, making it a good earthquake measure.
In the overlay (cover) work we performed this time, the roof becomes double-layered, which increases the weight, but Hiranbi is a lightweight roofing material, making it suitable for overlay (cover) work.
Color
Extreme – MAX Type
■ Gray Silver
■ Silver Black
■ Sepia
■ Moss Green
■ Bamboo Green
■ Midnight Blue
■ Jet Black
■ Dark Brown
■ Bright Red
Standard Type
■ Steel Black
■Marron Brown
■J Silver
You can choose from the above!
This time, the cover work with Shade Blue turned out exceptionally well!
Thank you for your request!!
Please check out other roofing work examples from here!
What is the Roof Overlay (Cover Method)?
The roof overlay method involves leaving the current roof almost as it is and placing a new roof on top of it.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roof is laid over, it is also referred to as “overlapping roofing.”
Advantages of the Overlay Method
Since a “new roof” is placed over the “current roof,” demolition work is almost unnecessary, meaning that very little waste is generated.
This is its most significant feature, leading to various advantages.
The only parts that require demolition and waste disposal are the ridge cap, making it more cost-effective compared to complete roof replacement.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for more details, please visit the Ministry of Health, Labour and Welfare’s website).
Some building materials used in structures built before 2004 contain asbestos. Asbestos-containing materials are challenging to dismantle due to their high environmental impact, resulting in high costs for both demolition and waste disposal. The overlay method, which generates almost no waste, is ideal for such roofs.
Some may wonder, “Is it safe to live in a building that uses asbestos-containing materials?” Rest assured. As long as there is no destruction or crushing, it will not disperse into the air.
If you are unsure about the type of roof on your home, please consult us.
Additionally, it can be completed in a shorter time frame than painting or complete replacement. A shorter construction period means lower labor costs, which in turn makes the overall cost cheaper.
The psychological anxiety of having to live in an unusual environment is also reduced.
When scaffolding is set up, you may experience inconveniences such as difficulty entering and exiting or not being able to open windows. Being able to return to your normal life in a short period is a significant advantage.
Our company specializes in roofing work, but the roof overlay method is the most frequently performed work we undertake. We are very grateful that we continuously receive requests for roof overlay method work without interruption.
| Roof Material |
Inagaki Shouji/Hiranbi 220
|
|---|---|
| Manufacturer Warranty | Coating 15 years, Hole 25 years |
| Expected Durability | About 35 years |
| Color Used This Time |
Moss Green
|
Leave Your Roof Renovation in Aoba-ku, Yokohama to Kakeru Koumuten!
Our company has extensive experience in roof renovations in Aoba-ku.
We are happy to assist with roof overlay work, roof replacement, and partial roof repairs such as leak fixes.
If you have any questions or concerns like “I just want to know the estimate for the roof renovation” or “I want to know about roofing materials,” please feel free to contact us!
Community-Focused Service
As a home exterior renovation company in Aoba-ku, Yokohama, we have handled many roof renovations in nearby Aoba-ku and deeply understand the needs of our local customers.
“I want it to last long with one renovation”
“I want to keep costs as low as possible”
“I want to improve insulation performance because the indoors are hot”
We provide optimal solutions for specific requests like this.
Long-term Reliability
All roofing materials we use are highly reliable products that come with long-term warranties. For example, the Hiranbi 220 from Inagaki Shouji that we used this time has a manufacturer warranty of 15 years for the coating and 25 years for perforation, allowing you to use it with peace of mind for a long time after just one renovation.
Hiranbi is a lightweight roofing material that excels in durability and cost performance, but we also offer roofing materials with even higher durability and better insulation properties.
Summary
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten is a remodeling company strong in exterior renovations, and we perform complete in-house construction from temporary scaffolding to roofing and exterior painting.
We are confident that our “cost, quality, and excellent planning” are unmatched compared to other companies in exterior renovation projects!
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 cost performance and our customers’ future life plans!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We also have information on roofing costs and pricing plans for roof overlay methods, so please take a look if you are interested!
We look forward to your inquiries. Thank you very much.
Helpful information about exterior renovations can be found here!
・Aoba-ku, Yokohama | Roof Overlay (Cover Method) | We performed a roof overlay using Super Galtect!
・Aoba-ku, Yokohama | Roof Overlay (Cover Method) | We performed a roof overlay using Ridgeway!
・Aoba-ku, Yokohama | Roof Overlay (Cover Method) | We performed panel removal and roof work!
・Painting DIY Plan! A must-see for those who want to try DIY roof and exterior wall painting! We will only set up the scaffolding!
・What is the market price for roof remodeling? Types of work and how to choose a contractor, etc.
・We will introduce construction methods according to the type of roof work and the degree of deterioration!
・Latest! Subsidies and grants available for remodeling, and reduction systems!
・What are the market prices for rain gutter repair and cleaning? Tips on timing and choosing contractors for fire insurance too!!
・Renovation Store in Kanagawa Prefecture, Yokohama | What is Roof Overlay (Roof Cover Method)?
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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!
