[Suginami-ku, Tokyo]｜We performed a roof overlay using Super Galtect on slate!

Suginami-ku, Tokyo | Construction Data

Roof Overlay Construction Procedure

1. Dismantling Existing Metal Sheets

First, we will dismantle unnecessary parts (ridge metal) for the overlay method!

The durability of wooden purlins is about 10 to 15 years. Once the durability period is exceeded, corrosion and discoloration occur, leading to the detachment and scattering of the ridge metal.

2. Installing Roofing (Waterproof Sheet)

Next, we will apply the waterproof sheet! The roofing used is Tajima Roofing/Tadis Self!
It is a highly durable non-woven fabric roofing!
As a secondary waterproofing measure, if the roofing is properly installed, it generally won’t leak!
We will ensure it is firmly applied 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 roofing sheets that match the durability of the new roof and the roof slope!

3. Processing of Accessories (Kera and Karakusa)

Before the main roof construction, we will process and install accessories such as kera and karakusa. We use SGL steel sheets for the genuine Galtect accessories!

The metal fittings at the ridge are our original integrated waste board-type ridge base. It has a durability of about 30 years and is a highly wind-resistant ridge base.

4. Main Construction (Aijii Industry/Super Galtect)

After processing the

accessories, we will install the Galttect main body up to the ridge! The fasteners used for the Galttect main body are genuine stainless steel renovation screws from Aiji Industry!

Once the installation reaches the ridge, we will install the necessary materials to secure the ridge cap, known as the “kanban.” We offer three types of kanban: cedar, resin, and galvalume steel, and this time we used galvalume steel!

Galvalume steel is expected to have three times the durability of cedar! Unlike resin or cedar, it does not crack, providing peace of mind!

Our original integrated waste board made of galvalume steel is highly durable, has strong fixation, 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!

It is perfect for the super Galttect ridge base!

5. Processing of Ridge Cap and Sealing at Various Locations

We will process and install the ridge cap

. To enhance waterproofing, we will install a face plate on the inside of the ridge! We will firmly apply sealing on the inside of the joints.

The screws used for fixation are made of rust-resistant stainless steel with waterproof packing!

Screws with packing are less likely to come loose compared to nails,
firmly securing the ridge cap to the kanban!

 

Although it is not visible after construction,
installing the face plate on the inside of the ridge cap
enhances waterproofing!
It firmly protects the ridge, which is a critical point of the roof.

6. Cleaning

After the

roofing work is completed, we will clean up any debris that has fallen onto the balcony or rain gutters. We will thoroughly remove items such as nails and metal scraps, as they can lead to injuries.

Additionally, we will wipe away any footprints left on the roof to ensure it looks clean.

About Roofing Materials

The roofing material used is Ai-Gi Kogyo / Super Galtect. Super Galtect comes with a 15-year paint warranty and a 25-year hole warranty from the manufacturer, along with a 10-year construction warranty from our company! Additionally, it is made of SGL steel, which is resistant to rust.

The insulation material is tightly applied from edge to edge of the roofing material, creating a metal sheet that integrates the steel plate and insulation. During installation, insulation is applied even to the parts where the roofing materials overlap, and the surface is coated with a high heat-reflective paint, allowing for a cool summer and a warm winter.

Moreover, it has soundproofing properties, which reduce the sound of rain. Being lighter than other roofing materials also minimizes the sway during earthquakes, providing earthquake resistance.

It excels in finish, durability, insulation, soundproofing, and wind resistance, and Super Galtect from Ai-Gi Kogyo is the most frequently used in our construction achievements and is gaining significant attention!

Colors

■Shade Black

■Shade Brown

■Shade Blue

■Shade Moss Green

■Shade Charcoal

■New Color Shade Wine Red

You can choose from these 6 colors!
This time, we completed the overlay work with Shade Blue, and it turned out very well!
The customer was extremely satisfied, and I was very happy too!
Thank you very much!

Roof Material	IG Kogyo / Super Galtect
Manufacturer Warranty	Coating 15 years, Red rust 20 years, Perforation 25 years
Expected Durability	About 35 to 40 years
Color Used This Time	Shade Blue

Please check out other roofing work achievements here!

If you are looking for exterior remodeling in Suginami-ku, Tokyo, please contact Kakeru Koumuten.

Our company handles many roofing and exterior painting projects in Suginami-ku, Tokyo. We are happy to assist with partial roof repairs such as roof overlays, roof replacements, exterior painting, exterior cladding replacements, and leak repairs, as well as other repairs!

In urgent cases such as leak repairs, we may also be able to provide emergency measures without scaffolding, so please consult with us!

“I want it to last long with one renovation”, “I want to keep costs down as much as possible”, “I want to improve insulation because the indoors are hot”, we will provide the best solutions for your specific requests.

We carry out everything from temporary scaffolding work to roofing and exterior painting completely in-house.
We are confident that we will not be outdone in terms of cost, quality, and efficiency compared to other companies in exterior work!
We welcome competitive estimates with confidence!

Long-Term Reliability

All roofing materials we use are highly reliable products that come with long-term warranties. For example, the Super Galtect we used this time comes with a 15-year paint warranty and a 25-year hole warranty from the manufacturer. We also provide a 10-year construction warranty, so you can use it with peace of mind for a long time after just one renovation.

Super Galtect 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, so please feel free to consult with us.

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 Kanagawa Prefecture!

Kakeru Koumuten is a company strong in exterior renovations. From temporary scaffolding work to roofing and exterior wall painting—completely in-house construction! We are confident that 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! Our construction warranty and aftercare services are comprehensive, 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 you feel this way.

We look forward to your inquiries. Thank you very much.

Useful information about exterior renovations can be found here!

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