What is Kasagi? We will explain in detail the role of Kasagi and how to repair it!

Hello! This is Kakeru Construction Co., Ltd.!

 

Here we will introduce about “Kasagi”

We will also introduce actual implementation examples at Kakeru Construction Co., Ltd.!

I often hear people’s concerns and questions.

In this article, I would like to introduce you to Kasagi so that you can clear up those questions!

What is Kasagi?

In architectural terms, 『kasagi』 refers to a finishing material that is attached to the top of a horizontal structure such as a balcony, veranda, or parapet. Kasagi is a material or part used for waterproofing.

The material varies depending on where it is installed, and aluminum, galvanized steel, and galvanized steel plates are mainly used outdoors, while wood is often used indoors. This time we will explain about Kasagi used outdoors!

Kasagi’s role

The main role of Kasagi is waterproofing. Of course, there is also the meaning of installing it to match the exterior design!

It is true that rain leaks from Kasagi are very common.

Kasagi has the role of preventing deterioration of walls and structures from rain, wind, and dust in the air. This is especially important for walls and rooftops that are affected by rain and wind.

The caps on verandas and balconies are made waterproof to prevent rainwater from penetrating inside the waist walls.

Kasagi is surprisingly little known, but you can think of it as a small roof that protects your home.

Points to note regarding Kasagi construction

①joint part

 

 

 

 

Care must be taken if the joints between the overlapping parts of the Kasagi are cracked or damaged. Rainwater may enter through the cracks.

Joints on verandas and balconies are susceptible to deterioration due to UV rays and temperature differences, so be sure to check for cracks.

②Deterioration of the Kasagi body

The Kasagi itself may deteriorate. If the Kasagi deteriorates, the waterproof function will decrease. Basically, Kasagi deteriorates due to UV rays, rain, etc.

Metal caps are particularly susceptible to rust.

If the Kasagi itself deteriorates, water can get inside, leading to corrosion of the wood of the structure and leaks.

There are many cases where Kasagi sheet metal is rusted and has holes!

③Nail/screw fasteners

 

 

 

 

 

Be careful if the Kasagi’s fasteners are fastened with nails or screws from directly above. When it comes to roofs and capstones, it is basically a no-no to drive nails into the sheet metal from directly above.

If you fix the sheet metal with ceiling hammering, rainwater will seep in through the nail holes, greatly increasing the possibility of corrosion of the base and leakage. If you have no choice but to hit the ceiling, be sure to use a primer to seal it!

Even if it is nailed from the side, the nails will become loose as time passes, and if rainwater seeps in through the gaps, the interior will begin to deteriorate.

What is the repair/repair method for Kasagi construction?

Now, we will introduce how to repair and repair Kasagi sheet metal.

caulking repair

If a leak occurs because the caulking has deteriorated, deterioration can be prevented by simply reapplying the caulking.

The main areas where caulking is applied are the joints between the caps, around the handrails, around nails and screws, and where the caps connect to the exterior walls.

If it has cracks, or has become thinner and has gaps at both ends, it’s probably time to re-hammer. Replacement involves removing the existing sealant and filling it with new sealant.

Kasagi exchange

If the corrosion has progressed to the inside of the cap and there is damage caused by rain leaking indoors, it will be necessary to cover or replace the cap.

The construction method for Kasagi varies depending on the material. In the case of galvanized iron or metal, our company basically performs cover construction.

If the material of the cap is aluminum, it cannot be covered and will need to be replaced.

If the inside of the Kasagi is severely corroded or leaking, it will be necessary to replace everything from the foundation. In the case of replacement, the existing materials and foundation must be dismantled. After reinforcing the base, we will apply the veneer and install the new material.

Painting the Kasagi part

Kasagi can also be repaired by painting. Even though it is called repair, it only extends the waterproofing effect of the Kasagi itself and maintains its beauty.

Just because you paint it doesn’t mean it will prevent leaks.

Even though it maintains its beauty, painting is not recommended as the paint will peel off over time. On the other hand, in some cases, the appearance may deteriorate after a few years.

Construction explanation of Kasagi sheet metal replacement

I explained about Kasagi above, but I will explain it in an easy-to-understand manner based on the construction photos! This is the actual results of construction at Sho Construction!

1.Removal of existing Kasagi

2.Kasagi underlayment replacement

3.roofing sheet upholstery

There is also an article that explains about roofing sheets! Please take a look if you like!

4.Attachment of accessories/arabesque

5.Kasagi installation and caulking in various places

Kasagi construction example

For the sheet metal of the Kasagi and gables, galvalume steel plates are processed to match the building!
The sheet metal we often use at our company is JFE Steel Sheet/Kiwami MAX!

The durability is about 35 years, and there is a 25-year puncture guarantee!

In addition to Kasagi, we also provide information on various construction projects as well as useful information for construction!

There are some construction projects that can lead to losses and failures if you are not aware of them! Before you make a mistake or make a loss, acquire as much knowledge about construction as possible so that you can identify a contractor!

Testimonials from customers who have actually completed construction work

Q&A about Kasagi sheet metal construction

For Kasagi sheet metal work, leave it to Sho Construction!

Kasagi prevents rainwater from entering and protects balconies, balconies, parapets, and other areas of your home. If you notice rust on the cap wood, cracks or damage to the caulking, rot or leaks under the balcony or verandah (eaves), you need to take immediate action.

If you wish to maintain it, we will repair it with caulking or coat it with paint. If the interior has corroded due to rain leaks, it would be a good idea to replace the cap and repair it.

At Kakeru Construction Co., Ltd., estimates and inspections are of course free of charge!

We put our customers first and are confident in our execution! At Kakeru Construction, we do not charge fees until the customer is satisfied with the installation!

After the implementation, there are things that I am even slightly concerned about, and I am still not satisfied with it! If you have any questions, please feel free to contact us and we will respond as soon as possible!

Click here for useful information about exterior renovation!

Consultations on LINE are also welcome◎

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!