Construction example

Roof Overlay (Cover Method) | Hadano City | Asbestos-Containing Slate – Dan Netsu Top

BEFORE

AFTER

Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior wall painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of exterior renovation work in Hadano City.
The work we performed this time is a roof overlay (cover method) using Dan Netsu Top!
We implemented measures against leaks through roofing work!

The existing roofing material is an asbestos-containing slate roof. It has significantly deteriorated, making it difficult to prolong its life through painting, so we proposed leak prevention work using the roof overlay (cover method)!

Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.

Roof Overlay Construction Procedure

1. Demolition of Existing Ridge and Snow Stops

We will dismantle unnecessary parts (ridge metal) for the cover method! The lifespan of wooden purlins is about 10 to 15 years. Exceeding the lifespan can lead to corrosion and discoloration, resulting in the detachment and scattering of ridge metal.

2. Laying of Roofing (Waterproof Sheet)

The roofing material used is Jouyu Pulp Industry/Sunlight G!
It is made of modified asphalt roofing, which is said to have double the durability of regular asphalt roofing.
As a primary waterproofing measure, if the roofing is properly installed, there will be no leaks!

We will securely attach it so that it does not blow away!

3. Fabrication of Components (Karakusa, Keraba, Valley)

Before the main roofing work, we will fabricate components such as keraba, karakusa, and valley metal!
The components used are made of SGL copper plate!

4. Main Construction (Sekino Kousan/Dannetsu Top)


After fabricating the components, we will install the Dannetsu Top roofing all the way to the ridge!
Once the roofing is completed up to the ridge, we will install the necessary materials to secure the ridge board, known as the kanban. There are types made of cedar and resin, and this time we used the resin type!
The resin type is expected to have twice the durability of the cedar type!

5. Processing of Ridge Cap and Sealing at Various Locations

Next, we will process and install the ridge cap. We will firmly apply sealing on the inside of the joints. At the wall edge, we will fabricate and install a component called a rain stop metal.
The nails and screws used for fixing are made of stainless steel, which is resistant to rust!

6. Cleaning


We will clean up the debris that has fallen on the balcony and rain gutters. We will thoroughly remove items like nails and metal scraps that could cause injuries. Additionally, we will wipe away any footprints left on the roof to ensure it looks clean.

About the Roofing Material

The roofing material used is Sekino Kousan’s Danetsutop.

Danetsutop is made of Galvalume steel, which offers excellent durability and comes with a manufacturer’s coating warranty! 15-year coating warranty and 25-year hole warranty are included!

While it looks very similar to Hirambi, Danetsutop comes with polyethylene foam insulation as a standard feature, not as an option!
Additionally, we provide a 10-year construction warranty!

Features of Danetsutop 8-1

It is lightweight and strong against earthquakes, making it a roof material that excels in both lightweight properties and robust fastening. It is also easy to install, which improves work efficiency.

Moreover, it features heat-insulating GL steel plates with insulation effects. The high corrosion-resistant GL steel plate combined with insulation material offers excellent thermal insulation, soundproofing, and strength.

Color

*Colors may vary depending on the type of product.

This time, we completed the cover work in green, 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 roofing work achievements from here!

Summary

Roofing Material

Sekino Kousan / Danetsutop

Manufacturer Warranty 15 years for coating, 25 years for perforation
Expected Durability Approximately 15 to 25 years
Color Used This Time

Green

 

Leave Your Roof Renovation in Hadano City, Kanagawa to Kakeru Koumuten!

Our company has extensive experience in roof renovations in Hadano City.
We are happy to assist with roof overlay work, roof replacement, and partial roof repairs such as leak repairs.
If you have any questions or concerns, such as “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!

As an exterior renovation company based in Aoba-ku, Yokohama, we have handled many roof renovations within Kanagawa Prefecture and have a deep understanding of the needs of our local customers.

“I want it to last a long time with just 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 these.

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 renovation company strong in exterior renovations, and we conduct complete in-house construction from temporary scaffolding to roof work and exterior wall painting.
We are confident that our “cost, quality, and efficiency” in exterior renovation work are unmatched compared to other companies!

We are confident in our exterior renovations, so we welcome competitive estimates!
We offer robust construction guarantees and aftercare services, and we have received positive feedback for our appropriate proposals that align with 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 have also published information on roofing costs and pricing plans for the roof overlay (cover method), so please take a look if you’re interested!

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

Useful information about exterior renovations can be found here!

We welcome consultations via LINE as well◎

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For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

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!