Kanagawa Prefecture | Aoba-ku, Yokohama | U’s Residence: We carried out renovations through roof reform and exterior painting work!

Hello!
I am Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama!
This is a case study of an exterior renovation in Aoba-ku, Yokohama.
There are several types of exterior renovations, and this project includes exterior painting, roof overlay (cover method), and work on the eaves and flashing!

On this page, I will explain the actual results of the work done by Kakeru Koumuten!

Thank you very much for choosing Kakeru Koumuten!

目次

• 1 Exterior Painting Construction Procedure
  • 1.1 1. High-Pressure Washing
  • 1.2 2. Protection of Various Parts
  • 1.3 3. Primer
  • 1.4 4. Middle Coat
  • 1.5 5. Top Coat
  • 1.6 6. Painting of Auxiliary Parts (Eaves, Rain Gutters, Caps, Wood Parts, Soffits)
    • 1.6.1 Soffit
    • 1.6.2 ・Cap
    • 1.6.3 ・Eave Drip
    • 1.6.4 ・Rain Gutter
    • 1.6.5 ・Wood Parts
• 2 Roof Overlay Construction Procedure
  • 2.1 1. Dismantling Existing Ridge Cap
  • 2.2 2. Installing Roofing (Waterproof Sheet)
  • 2.3 3. Fabricating Fittings (Curly Patterns & Eaves)
  • 2.4 4. Main Construction (Asahi Fiberglass/Ridgeway)
  • 2.5 5. Ridge Cap Installation, Ventilation Ridge Processing, and Sealing
  • 2.6 6. Cleaning
  • 2.7 About Roofing Materials
    • 2.7.1 Colors
• 3 What is the Roof Overlay (Cover Method)?
  • 3.1 Advantages of the Overlay Method
• 4 Procedure for Eaves and Fascia Metal Covering Work
  • 4.1 1. Eaves Board Metal Processing
  • 4.2 2. Fascia Metal and Sheathing Installation
  • 4.3 3. Nailing and screwing
  • 4.4 4. End caulking treatment
  • 4.5 5. Cleaning up to complete the job!
• 5 For roof renovations in Aoba-ku, Yokohama, trust Kakeru Koumuten!
  • 5.1 Community-Focused Service
  • 5.2 Long-Term Reliability
• 6 Conclusion

Exterior Painting Construction Procedure

1. High-Pressure Washing

2. Protection of Various Parts

We will protect areas that will not be painted, such as windows, sashes, and floors, using masking tape, blue sheets, and polymer masks. This is a very important task in the painting process! If protection is neglected, gaps can form, allowing paint to seep in, or clean lines may not be achieved.

3. Primer

This is the first application of paint after high-pressure washing and substrate treatment, ensuring that the middle and top coats adhere properly to the painted surface. A solid primer application greatly affects durability and finish quality!

4. Middle Coat

This is a crucial step to bring out the performance of the paint, achieve a beautiful finish, and eliminate unevenness!

5. Top Coat

This is the finishing of the exterior wall painting. We are conscious of achieving a beautiful finish without any unevenness or missed spots! The paint used is from SK Kaken / Premium Inorganic!

　　

6. Painting of Auxiliary Parts (Eaves, Rain Gutters, Caps, Wood Parts, Soffits)

 

Soffit

・Cap

・Eave Drip

・Rain Gutter

・Wood Parts

We will thoroughly paint even the small areas that can be painted!

Please check out our other painting work results here!

Roof Overlay Construction Procedure

1. Dismantling Existing Ridge Cap

We will dismantle the existing ridge cap that is unnecessary for the cover method!

2. Installing Roofing (Waterproof Sheet)

3. Fabricating Fittings (Curly Patterns & Eaves)

4. Main Construction (Asahi Fiberglass/Ridgeway)

5. Ridge Cap Installation, Ventilation Ridge Processing, and Sealing

6. Cleaning

We will clean up any debris that has fallen onto the balcony or rain gutters. We will thoroughly carry out this task as nails and metal fragments can lead to injuries.

About Roofing Materials

The roofing material used is Ridgeway from Asahi Fiberglass.
Ridgeway comes with a 10-year manufacturer warranty.
Since it uses natural stone with baked-on paint on the surface, it is a roofing material that does not require painting, thus reducing maintenance costs!
Additionally, because it uses fine natural stone on the surface, you won’t be troubled by rain noise.
Moreover, it is a lightweight roofing material, making it strong against earthquakes and providing seismic resistance.

Colors

■ Dual Black

■ Harvard Slate

■ Vintage Green

■ Dual Brown

■ Earthen Cedar

This time, the roofing work with Harvard Slate turned out exceptionally well!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing project results 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, effectively covering 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 material is generated.
This is the biggest feature and leads to various advantages.

The only part that requires dismantling and waste material processing is the ridge cap, so compared to a full roof replacement, the cost is lower.
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 website).
Some building materials used in structures constructed before 2004 contain asbestos. Asbestos-containing materials are difficult to dismantle due to their high environmental impact, resulting in high costs for both dismantling and waste processing. The roof 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?” but rest assured. As long as they are not destroyed or crushed, they will not disperse into the air.
If you are unsure about the type of roof on your home, please feel free to consult us.

Additionally, the construction can be completed in a shorter time frame compared to painting or full roof replacement. A shorter construction period means lower labor costs, which in turn reduces the overall cost.
This also alleviates the psychological anxiety of having to live in an unusual environment.
When scaffolding is set up, you may experience inconveniences such as difficulty entering and exiting or opening 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 service we provide. We are very grateful that we are continuously engaged in roof overlay projects!

Procedure for Eaves and Fascia Metal Covering Work

The eaves board and the fascia board (the eaves board on the side with the rain gutter) play a crucial role in preventing wind from adversely affecting your home.
During strong winds, such as those from typhoons, rain can blow in horizontally, so the eaves and fascia boards help to disperse the wind, making it harder for rain carried by the wind to reach the junction between the roof and exterior wall materials. This helps to prevent water from blowing in.

Generally, maintenance of the eaves and fascia boards (the eaves board on the side with the rain gutter) is done through painting, but when there is overall damage that cannot be repaired with paint, metal work is performed.
The metal work for the eaves board involves covering the eaves board with Galvalume steel sheets as a renovation project.
This is also referred to as metal wrapping or covering work.

This time, we performed metal covering work on the eaves and fascia boards!

Metal used: JFE Steel / Kiwami Max ¥ (15-year paint warranty / 25-year hole warranty)

1. Eaves Board Metal Processing

2. Fascia Metal and Sheathing Installation

3. Nailing and screwing

We will attach the processed metal and proceed with nailing! We will also apply caulking on the inside of the seams!

4. End caulking treatment

5. Cleaning up to complete the job!

Roofing material	Asahi Fiberglass/Ridgeway
Manufacturer Warranty	10 years
Expected Durability	25 to 30 years
Color Used This Time	Harvard Slate

 

Exterior Wall Paint	SK Kaken/Premium Inorganic
Exterior Wall Color	SR-163
Accessory Paint	Nippon Paint/Fine Si
Accessory Color	N-90/Black

Fascia & Soffit Metal	JFE Co., Ltd./Goku MAX
Durability	Approximately 35 years
Coating Warranty	15 years
Puncture Warranty	25 years
Color	Total of 17 colors　Color used this time: Jet Black

For roof renovations in Aoba-ku, Yokohama, trust Kakeru Koumuten!

Our company is based in Aoba-ku, Yokohama, and we have extensive experience in roof renovations in this area.
We are happy to assist with partial roof repairs, including roof overlay work, roof replacement, and leak repairs.
“I just want to know the estimate for a roof renovation” or “I want to know about roofing materials” If you have any questions or concerns, please feel free to contact us!

Community-Focused Service

As an exterior renovation company in Aoba-ku, Yokohama, we have handled many roof renovations and deeply understand the needs of our local customers. Whether you want “a long-lasting renovation,” “to keep costs down,” or “to improve insulation because the indoors are hot,” we provide optimal solutions for your specific requests.

Long-Term Reliability

All roofing materials we use come from reliable products that offer long-term warranties. For example, the materials used this time, Ridgeway comes with a 10-year manufacturer warranty, allowing you to use them with peace of mind for a long time after a single renovation.
Ridgeway is a lightweight roofing material with excellent seismic resistance, but we also offer roofing materials with even higher durability and better insulation properties.

Conclusion

Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

Kakeru Koumuten is a renovation company strong in exterior renovations, and we carry out complete in-house construction from temporary scaffolding to roofing and exterior painting.
We are confident that our “cost, quality, and smooth process” 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 services, 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 also have information on roofing costs and pricing plans for the roof overlay method, so please take a look if you’re interested!

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

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!