Construction example

[Nishi-Tokyo City, Tokyo] | Exterior Repairs | We were entrusted with the repair work for a flower bed that was damaged by a car!

BEFORE

AFTER

Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!

On this page, we will introduce actual projects completed by Kakeru Koumuten.

This time, we are showcasing a case study of exterior renovation in Nishitokyo City, Tokyo.
The content of this construction project is exterior repair work.

Thank you very much for choosing Kakeru Koumuten Co., Ltd. for your project!

Exterior Repair Construction Data in Nishitokyo City, Tokyo

Construction Location
 Nishi-Tokyo City, Tokyo
Construction Details
 Exterior Repair Work
 Brick Repair
Background to the Construction

 ●Inquiry Details
We received an inquiry from a customer living in Nishi-Tokyo City, Tokyo.
“I accidentally hit the exterior with my car and it got damaged, so I would like to request repairs.”

 ●Proposal Details
The areas to be repaired this time are the mortar and brick. We have proposed prompt action and partial repair work based on the customer’s request.

Existing Materials / Materials Used
 Materials Used: Mortar
Price Range
 ¥10,000 – ¥50,000
Construction Period
 1 day
Completion Month
 May 2025

Exterior Repair Work Construction Procedure

1. Existing Mortar Demolition

      

First, we will demolish up to the area where the existing cracks are!

We will leave the areas that are not cracked.

2. Formwork Installation

We will assemble the formwork to match the existing mortar.

This process is very important as it determines the shape of the mortar.

3. Application of Base Adjustment Agent (Adhesion Enhancer)

Next, we will apply the base adjustment agent.

This serves to enhance the adhesion between the mortar and the substrate, as well as to penetrate the existing mortar to strengthen the substrate.

4. Mortar Filling

This time, we will only replace the cracked parts.

We will be careful to fill it in without creating gaps or air bubbles.

If gaps or air bubbles form, it will reduce strength and durability.

5. Leveling and Finishing

After filling the mortar, we will level it using a trowel.

During this process, we will ensure it is finished flat.

6. Formwork Dismantling and Completion

We will dismantle the formwork.

Care must be taken during dismantling to avoid breaking it.

Finally, we will clean up.

6. Brick Repair

What is Mortar?

Mortar is one of the materials widely used in current construction and civil engineering, made by mixing cement, sand, and water to create a building material.

Main Materials of Concrete

Cement

Cement is the main component that determines the strength of concrete. Typically, Portland cement is used. Cement reacts with water to undergo hydration, hardening and solidifying the mortar.

Water

Water is essential for triggering the hydration reaction of cement. If there is too much water, the mortar becomes weak, and if there is too little, it does not mix uniformly.

Sand (Fine Aggregate)

Fine aggregate, such as sand, is used as a filler in mortar, enhancing its density and strength.

Properties of Mortar

1. Hardening

Mortar hardens through a chemical reaction (hydration) with water, increasing in strength over time and solidifying like stone. It can harden both in air and underwater, making it usable indoors and outdoors. Care must be taken as it is prone to drying shrinkage during the hardening process.

2. Adhesiveness

It serves as an “adhesive” that firmly binds bricks, blocks, tiles, and more. The rougher the surface material, the easier it adheres, while smooth materials (like glass and metal) are harder to bond. Recently, “polymer cement mortar,” which includes resin, has become popular, exhibiting higher adhesiveness.

3. Strong in Compression, Weak in Tension and Bending

Mortar excels in compressive strength, making it effective in areas that bear weight. However, it is weak against tensile and bending forces, making it prone to cracking.

It is also not very resistant to expansion and contraction due to earthquakes or temperature changes, requiring appropriate measures.

4. Permeability and Shrinkage

Mortar is permeable to water, so it has poor waterproofing performance as is. When used on exterior walls or roofs, it must be finished with paint or waterproofing materials. Additionally, it has a property of shrinking during hardening and drying, which is a major cause of “cracking.” Special care is needed in areas prone to freeze-thaw cycles (frost damage).

Leave Your Exterior Renovation in Nishi-Tokyo City, Tokyo to Kakeru Koumuten!

Our company handles many exterior renovations in Nishitokyo City, Tokyo. We are happy to assist with partial roof repairs such as exterior repairs, exterior renovations, roof overlays, roof replacements, exterior wall painting, exterior wall replacements, and leak repairs, just like the ones mentioned this time!

For specific requests like “I want it to last long with one renovation,” “I want to keep costs down as much as possible,” or “I want to improve insulation because the indoors are hot,” we provide optimal solutions.

If you have any concerns or questions 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!

List of Areas in Nishitokyo City, Tokyo

Izumicho, Nishitokyo City / Kitaharacho, Nishitokyo City / Kitamachi, Nishitokyo City / Sakaemachi, Nishitokyo City / Shibakubocho, Nishitokyo City / Shimohoya, Nishitokyo City / Shinmachi, Nishitokyo City / Sumiyoshicho, Nishitokyo City / Tanashimachi, Nishitokyo City / Nakamachi, Nishitokyo City / Nishiharamachi, Nishitokyo City / Higashimachi, Nishitokyo City / Higashifushimi, Nishitokyo City / Hibarioka, Nishitokyo City / Hibarioka Kita, Nishitokyo City / Fujimachi, Nishitokyo City / Hoyamachi, Nishitokyo City / Midorimachi, Nishitokyo City / Minamimachi, Nishitokyo City / Mukodai, Nishitokyo City / Yanagisawa, Nishitokyo City / Yatodacho, Nishitokyo City

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 carry out complete in-house construction from temporary scaffolding to roofing and exterior wall painting. We are confident that we do not fall short compared to other companies in terms of “cost, quality, and efficiency”! We welcome competitive estimates!

We also offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our appropriate proposals that match the 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 look forward to your inquiries!

Helpful information about exterior renovations can be found here!

LINE consultations are also very welcome◎

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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!