Home   >   Industry News

There are many hidden dangers of water seepage in the doors and windows of the house. How to do waterproofing?


When it comes to the use problems after installing new doors and windows at home, "water seepage and water leakage" occurs most frequently, and it is also the most troublesome to solve.

The leakage of doors and windows will cause heavy rain outside and light rain at home in typhoon days, or the continuous water ingress on the surface of the inner wall will eventually lead to foaming and mold on the wall skin, which will always affect the normal life after occupancy.

The focus of Baydee's article is to teach you where the hidden dangers of door and window leakage are, and how to do a good job of waterproofing your home's doors and windows in advance.

01 Where are the hidden dangers of leakage in doors and windows

The reason for the leakage of doors and windows at home may be that the airtightness and watertightness of the doors and windows itself exceeds the maximum tolerance, or it may be caused by problems at the processing end of the doors and windows, or that waterproof measures are not in place during the installation of doors and windows.

The airtightness and watertightness of door and window products exceed the maximum tolerance

Different door and window product structures have different levels of airtightness and watertightness.

For example, the airtightness and watertightness of ordinary sliding windows are not as good as outward opening windows, and the sealing performance of system windows is worse than that of non-system windows.

△ Generally speaking, the structure of the sliding window has obvious air leakage and rain

When the outdoor wind and rain are too strong to exceed the upper limit of the sealing performance of doors and windows, rainwater will easily pour into the room:

Reasons for door and window processing

Some doors and windows have no problem with their structure and waterproofing installation, but they leak when it rains.

There are no drainage holes in the doors and windows, or the drainage holes are too high, and the rainwater flowing into the gaps in the doors and windows cannot be drained normally, and thus flows into the room.

The frame and sash corners of the doors and windows, the center sill and the frame are not coated with end glue for waterproofing, which allows rainwater to flow into the room through these gaps, resulting in leakage.

In addition, there are processing problems such as the gap between the outdoor glass pressing line is too large, and the error between the window sash and the frame is not strict, which leads to leakage.

Waterproof measures are not in place when installing doors and windows

When installing doors and windows, sealant will be used to caulk the gaps and waterproof. If the sealant is used less or missed, or the quality is too poor, the glue will age and crack in a short period of time, and it will easily leak

The drainage and waterproofing around the door and window frames are not in place. For example, if the window sill is wide but there is no slope and waterproofing, and there is no height difference between outdoor doors such as balconies and the ground, rainwater is easy to accumulate and leak; Gap, rainwater seeps directly into the room;

And there are leakage gaps in the outer wall near the doors and windows, and there is no leakage problem of waterproof treatment.

02 Solution

1. The airtightness and watertightness of door and window products exceed the maximum tolerance

Unless it is a balcony for washing and drying, it is not recommended to buy sliding windows with too many gaps and poor sealing treatment. Otherwise, the doors and windows will not drain in time during typhoons or heavy rains, and it is prone to the phenomenon of "heavy rain outside and light rain at home".

Ask the merchant "Is there a product performance test report? How is the airtight performance?" If there is a report and the performance level is high, it is much better than other bulls that the merchant brags.

2. For the reasons of door and window processing

When purchasing doors and windows, ask the merchant, "Is there any waterproof treatment for the joint corners of this door and window?" If the merchant can confirm that the end face glue is applied, or directly show you the factory photo certificate, then you can buy with confidence.

Search the word-of-mouth of the manufacturer's information on the Internet, ask the merchant "the value of the factory's equipment, the factory's reward and punishment system, and the experience of the workers, and ask for photos and videos of the factory's real shots", and go to the local door and window factory for on-the-spot inspections and other channels to learn about the processing of the door and window company ability.

3. Waterproof measures for the installation of doors and windows

When purchasing, ask your family, "What brand of exterior wall adhesive is used for door and window installation?" If it is Silicon Bao, Zhijiang, Baiyun, Antai, Zhongyuan, Dow Corning (acquired and renamed Taoxi), GE, Wacker And other brands of glue, you can rest assured to buy. Merchants do not offer to purchase by themselves.

After the doors and windows are installed, check whether the installers have applied glue indiscriminately or less, and require timely rectification if found.

The developer is responsible for the waterproofing of the exterior walls of the new community, so if any leaks are found on the exterior walls before moving in, ask the developer for repairs in time.

The exterior walls of sub-new and old communities will have problems such as "not waterproofed, or the warranty period has expired, and there are gaps in the dry-hanging stone aluminum panels on the window sills", so you must do your own inspections, timely repair leaks and waterproof

The lower window sill is the most prone to water accumulation, which is the top priority of waterproofing doors and windows. Baydee provides the following waterproofing solutions:

(1) The window sill is used as a drainage slope + waterproof paint + tiles. When the doors and windows are installed at a position with a wide window sill, the order of window installation can be: clean the base surface → apply waterproof paint → install windows → build a drainage slope with an angle of about 10 degrees on the outer window sill → install tiles → apply sealant.

(2) The construction process is the same as above, except that the waterproof coating is replaced by flexible waterproof membrane or waterproof rain cloth. The price is relatively expensive, and the durability is relatively better.

(3) Replace ceramic tiles with aluminum alloy window sills. In comparison, the window sill is more compatible with the doors and windows, and has a high value; water will not flow directly from the window sill to the wall, and it is not easy to leave water marks and easy to take care of.

Written at the end: For most first-time renovations, it is difficult to understand the importance of waterproofing doors and windows. Merchants do not pay attention to and online teaching of doors and windows waterproof tutorials is relatively small, which also increases the difficulty for consumers to understand waterproof knowledge.

Baydee will continue to pay attention, and strive to gather more experience and solutions to continue to publish articles to help more friends in need.