[Konan-ku, Yokohama]｜Roof repair and exterior painting for a used property were completed!

BEFORE

AFTER

Hello!
We are Kakeru Koumuten Co., Ltd., specialists in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!

On this page, we will explain the actual results of the work carried out by Kakeru Koumuten.

This time, we would like to introduce a case study of an exterior renovation in Konan-ku, Yokohama. The main work included roof overlay (cover method), exterior wall painting, and rain gutter replacement.

Additionally, we have also introduced the fence and handrail work carried out in conjunction with this project in the article below, so please take a look at that as well!

This time, we were entrusted with the exterior renovation before moving in by a customer who purchased a used property in Konan-ku, Yokohama. Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors!

Construction Data for Konan-ku, Yokohama

Rain Gutter Replacement Work | Construction Procedure

1. Dismantling Existing Eaves Gutter

We will remove the eaves gutter and brackets carefully to avoid damaging the fascia!
After dismantling the existing brackets, there will be holes from screws and nails, so we will also perform repairs.

2. Installation of New Eaves Brackets

We will install new eaves brackets. The brackets will be made of stainless steel. When installing the brackets, we will use kite string or chalk lines to ensure the proper slope for the rain gutter. The slope of the rain gutter is very important!

3. Installation of Eaves Gutter

We will install the new eaves gutter! We will connect components such as “joints” and “outer bends” using a special adhesive for rain gutters.

4. Connection to Downspout

We will connect the existing downspout to the eaves gutter! The existing eaves gutter was a discontinued “Esuron/E100,” but the downspout is “Esuron/Y60,” which is not discontinued, allowing us to connect it to the new eaves gutter.

5. Water Flow Test and Cleaning

Finally, we will conduct a water flow test and clean up before completing the rain gutter replacement. During the water flow test, we will actually run water through the rain gutter to check for leaks and ensure that water flows properly.

This time, we used Sekisui/Σ90 for the eaves gutter.

Color

■Shincha

This time, the rain gutter replacement work was beautifully completed with Shincha!
The customer was very satisfied!
Thank you very much!

Please check out other rain gutter construction results from here!

Exterior Painting Work | Construction Steps

1. High-Pressure Washing

First, we thoroughly remove dirt and moss from the exterior walls using high-pressure washing! If dirt remains, it can affect the adhesion and durability of the paint, so we wash carefully. This is an important step before performing exterior painting.

We also wash the exterior structures, floor, and inside the rain gutters as well. The foaming is due to the bio-cleaning process, which creates detergent bubbles.

2. Surface Preparation

After high-pressure washing, we assess the deterioration of the exterior walls and perform surface preparation such as crack repairs.

3. Protection of Various Parts

Next, 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 exterior wall painting work! If the protection is neglected, gaps may form, allowing paint to seep in, or it may result in uneven lines.

4. Primer

This is the first painting task after high-pressure washing and substrate treatment, and it is the primer that ensures that the middle and top coats adhere well to the surface. By applying the primer thoroughly, there will be a significant difference in the durability and finish of the exterior wall painting!

The primer used in this exterior wall painting is the Excel Epoxy Sealer from Astec Paint, which is suitable for a wide range of exterior wall substrates. It has higher adhesion than conventional water-based primers.

For typical mortar exterior walls, it is desirable to use a primer with crack prevention functions, such as fillers or surfacers. However, using it on stucco-finished walls can cause problems like bubbling, so it is not recommended. For repainting stucco-finished walls, a sealer that considers breathability must be used.

5. Middle Coat

Next is the middle coat. This is an important process to bring out the performance of the paint, achieve a beautiful finish, and eliminate unevenness! The paint used in this exterior wall painting is a matte finish.

If a glossy paint is used on stucco-finished walls, it is prone to unevenness and can cause poor breathability, leading to bubbling. Therefore, it is necessary to use a matte paint considering breathability.

6. Top Coat

Next is the top coat. This will be the finishing touch for the exterior wall painting. We will be mindful to ensure there are no uneven spots or missed areas, resulting in a beautiful finish! For this exterior wall painting, we used Astec Paint’s Silicon REVO1000-IR.The manufacturer’s expected durability is about 13 to 16 years, and it is an excellent paint with heat insulation properties!

For more details about the heat-insulating paint “Silicon REVO1000-IR” used in this exterior wall painting, please click here!

7. Painting of Auxiliary Parts (Rain Gutter, Entrance Door Frame, Shutter)

Rain Gutter

Entrance Door Frame

Shutter

For auxiliary parts, after finishing the surface preparation such as scraping, if it is a metal part, we will apply a primer with rust prevention and then apply the middle coat and top coat with Yumelock. We will carefully paint all the details that can be painted!

Roof Repair (Roof Overlay Construction) | Construction Procedure

1. Existing Ridge and Snow Stop Demolition

We will dismantle unnecessary parts (ridge flashing) for the roof overlay method! The durability of wooden purlins is 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. Roofing Installation (Waterproof Sheet)

The roofing used is Jouyu Pulp Industry / Sunlight G!
This material is 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, it will not leak! We will ensure it is securely adhered to prevent it from blowing away. The durability of the new roofing material, Alma, is estimated to be 20 to 25 years, so we used a roofing sheet with a durability that matches the roofing material!

3. Accessory Processing (Kera and Karakusa)

Before the main roofing work, we will process and install accessories such as kera and karakusa! The materials used for the accessories are galvalume steel sheets.

4. Main Construction (Nichiha / Alma)

After processing the ridge materials, we will install the Alma main body all the way to the ridge! We will also firmly apply single cement during the construction. Once we have installed it up to the ridge, we will set up the necessary materials called “kanban” to fix the ridge metal.

There are two types of kanban: cedar and resin, and this time we used the resin type! The resin type is expected to have twice the durability compared to the cedar type!

5. Processing of Ridge Metal and Sealing at Various Locations

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

5. Cleaning

We will clean up any debris that has fallen onto balconies and other areas. We will thoroughly remove nails and metal fragments that could cause injuries. Additionally, we will wipe away any footprints left on the roof to keep it clean.

About Roofing Materials

The roofing material used is Nichiha’s Alma. Alma comes with a10-year manufacturer warranty.

Since it uses natural stone that is baked and painted on the surface, it is a roofing material that does not require painting, thus reducing maintenance costs! Because it uses fine natural stones on the surface, you won’t be troubled by the sound of rain.

The finish, durability, sound insulation, and wind resistance are excellent, and because it is lighter compared to other roofing materials, it reduces the sway during earthquakes, making it a good earthquake countermeasure. In the recent roof overlay (cover method) work we performed, the roof becomes double-layered, which increases the weight, but since Alma is a lightweight roofing material, it is suitable for roof overlay (cover method) work.

Colors

■ Black AR

■ Gray AR

■ Green AR

■ Brown AR

■ Camel AR

This time, the roof work with Black AR turned out exceptionally well!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing work achievements from here!

For roof repairs and exterior renovations such as exterior wall painting in Konan-ku, Yokohama, trust Kakeru Koumuten!

Our company has numerous achievements in roofing and exterior wall painting in Konan-ku, Yokohama. We are happy to respond to any requests, from roof overlays, roof replacements, exterior wall painting, exterior wall replacements, leak repairs, partial roof repairs, and other repairs.

If you have any questions or concerns, such as “I just want to know the estimate for exterior wall painting” or “I want to know about roofing materials,” please feel free to contact us!

Community-Focused Services

Based in Aoba-ku, Yokohama, we handle many roofing, exterior painting, and other exterior renovation projects in Konan-ku, Yokohama, and have a deep understanding of the needs of our local customers.

Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “improve insulation because the indoors are hot,” we provide optimal solutions for everyone living in Konan-ku, Yokohama.

Summary

This concludes our track record of exterior renovations in Konan-ku, Yokohama!

This time, we were entrusted with a variety of work including exterior construction, temporary scaffolding installation, rain gutter replacement, exterior wall painting, and roof overlay (cover method)!

While it is common for each contractor to be outsourced for construction, our company specializes in exterior renovations, and this time we also handled the scaffolding work in-house!

Although the customer had a set move-in date for a used property, we successfully completed the work before their desired move-in date!

Estimates and inspections are, of course, free! If you have any concerns regarding roof overlays, rain gutter repairs, exterior wall painting, or exterior construction, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

Our company conducts everything from temporary scaffolding work to roofing and exterior wall painting completely in-house. We are confident that in terms of “cost, quality, and efficiency”, we do not fall short compared to other companies, so we welcome competitive estimates!

In addition, we offer comprehensive construction guarantees and aftercare maintenance, and 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!” We take every request seriously to ensure you feel this way.

We also have information on roofing costs, roof overlay (cover method) pricing plans, and exterior painting pricing plans, so please take a look if you’re interested!

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

Helpful information about exterior renovations can be found here!

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