BEFORE

AFTER

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

This is a case study of an exterior renovation project in Takatsu-ku, Kawasaki City.
The work involved is a balcony renovation project!
This renovation was for a vacant house before moving in, where we replaced the old balcony coping and handrails with integrated aluminum coping!

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

⇩There is also an article about the costs of veranda handrails and coping work! Please take a look!⇩

⇩There is also an article that provides detailed information about coping! Please take a look!⇩

Construction Data

Construction Location
Kawasaki City, Takatsu Ward
Construction details

Balcony Renovation (Cap Replacement)
Repair of the exterior wall at the contact points of the existing wooden handrail and color-matching painting

Process Leading to Construction
"The cap on the balcony of the vacant house we plan to move into is falling apart, so we would like it replaced for the safety of our children."
This is what we were contacted about!
The existing cap had a rather thick wooden handrail attached to the metal sheet, which was a rare type.
The wooden handrail was in a significantly deteriorated state.
The existing metal sheet's base was also quite deteriorated, and there was slight water leakage occurring.
After dismantling the existing cap and handrail, we proposed to carry out new base construction and replace it with an integrated aluminum cap handrail!
Since the existing wooden handrail was embedded in the exterior wall, we also performed mortar repair on the exterior wall and color-matching painting!
Materials Used
LIXIL | Handline 3
Price Range
200,000–300,000 yen 
Construction Period
 3 days
Completion month
 January 2024

Cap Renovation Construction Procedure

1. Removal of Existing Cap Metal Sheeting

We will remove the existing handrail and cap flashing!

As you can see in the photos, the existing cap’s substrate was quite deteriorated.
Indeed, leaks were occurring due to this deterioration.

We will carefully dismantle it to avoid damaging the exterior walls!

2. New Cap Flashing Substrate Installation & Application of Preservative

We will cut the new substrate to match the size of the cap flashing and secure it with screws!

We will apply a wood preservative to the substrate.
By applying the preservative, there will be a significant difference in durability in the future.

3. Waterproof Sheet Installation

We will install a waterproof sheet over the substrate!
The waterproof sheet used is a modified asphalt roofing material, which is said to have twice the durability of regular asphalt roofing.
As a primary waterproofing measure, if the roofing is secure, there will be no leaks!
We will ensure it is firmly attached to prevent it from blowing away.

4. Installation of Fittings

We will install fittings to secure the cap flashing to the substrate, and then cover and secure the cap flashing on top.

5. Installation of Aluminum Cap Flashing

We will cover the new aluminum cap and secure it with the fittings installed earlier. If we secure it with screws, there is a higher possibility that rainwater will infiltrate and cause internal corrosion.
The new aluminum cap is fixed without drilling screw holes, providing high waterproofing.
The aluminum cap is processed at the factory to match the size of the balcony and then installed on-site!

6. Waterproof Sealing, Exterior Wall Repair, Color Matching Painting

We will thoroughly seal the joint between the exterior wall and the cap metal to prevent rainwater from entering.
We will also repair the holes in the exterior wall created when removing the existing wooden handrail with mortar, and after patterning, we will proceed with color matching painting.
The color matching painting will be done on-site while adjusting the colors.

7. Handrail Installation

 

Finally, once the handrail is installed, the work is complete!
The customer was able to confirm the finish of the cap and was very satisfied!

Lastly, we will clean any dirt or fingerprints off the cap, and the construction will be complete.

For balcony renovations in Takatsu-ku, Kawasaki, trust Kakeru Koumuten Co., Ltd.!

Our company has extensive experience in balcony renovations in Takatsu-ku.
For balcony renovations, we can fully handle waterproofing work such as cap replacement and handrail installation with our own team.
We are also happy to assist with partial work such as roof construction, exterior wall painting, and other painting or repair work.
“I just want to know the estimate for the work,” “I want to know about materials suitable for my home,” and any other concerns or questions you may have, please feel free to contact us!

Community-Focused Service

As an exterior renovation company based in Aoba-ku, Yokohama, we have undertaken many exterior renovations in nearby Takatsu-ku, Kawasaki, and we deeply understand the needs of local customers.
Whether you want to “make it last with one renovation,” “keep costs down as much as possible,” or “have the cap checked because it’s loose,” we will provide the best solutions for your specific requests.
We are happy to assist not only with replacement work but also with minor repairs and resolving drainage blockages on balconies.

Conclusion

This concludes our construction achievements for balcony cap replacement renovations.
Caps can surprisingly experience a lot of water leakage, so regular inspections and maintenance are recommended.
There are various types of caps, including metal processed caps and aluminum caps.
When renovating balcony caps, it is important to tailor the renovation to the building’s structure and age.
Kakeru Koumuten Co., Ltd. has extensive experience in cap replacement and repairs.
If you have any troubles or concerns regarding caps, please feel free to consult us!

We have also completed many vacant house renovations like the one this time before occupancy.
If you are unsure about the design of your renovation, we will use simulations to propose plans and color schemes that satisfy our customers!

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

Kakeru Koumuten Co., Ltd. is a renovation company strong in exterior renovations, and we conduct everything from temporary scaffolding work to roofing and exterior painting work completely in-house.
Regarding exterior renovation work, we are confident that we will not be outdone by other companies in terms of “cost, quality, and efficiency”!

We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, 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!” We take every request seriously to ensure you feel this way.

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

Helpful information about exterior renovations can be found here!

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For roof, gutter and exterior construction and repairs in Kanagawa,
contact Kakeru Koumuten Co., Ltd.

Kakeru Koumuten is a young company whose team is, on average, in their late twenties, but our skills are second to none.

Our greatest strength is that we handle scaffolding, roofing and painting entirely in-house. In an industry where these tasks are usually divided among contractors, our complete service simplifies project management and helps keep costs down. Above all, if a problem arises, we respond promptly.

We proudly describe ourselves as the youngest and most helpful renovation company in Kanagawa!