1. Profile selection and node structure are not suitable. During the design of broken bridge aluminum doors and windows, the calculation was not carried out in strict accordance with the design specifications of broken bridge aluminum doors and windows. The selection of profiles was inappropriate, the section size of profiles was small, and the material was too thin. The joint adopts plane splicing, and the gap at the joint is too large. The plane stiffness of the installed rear window is poor, resulting in deformation between the frame and the wall and the splicing place of the profile, poor tightness, and rainwater entering by voids, resulting in leakage.
2. The connection between the outer frame of doors and windows and the wall is not fixed properly. Broken Bridge aluminum doors and windows the connection between the outer frame and the wall is the key to its firm and reliable fixation. If the connection is not fixed properly, it will cause looseness, deformation and crack.
3. If the sealant is not properly injected, broken bridge aluminum the gap between the door and window frame and the hole should be sealed with sealant. When injecting sealant, no slot is left, sealant is applied to the internal corner, and the bottom of the window is applied to the plane of the plastering layer and the profile, so the width and thickness of sealant are difficult to control. When the glue is injected, the surface is not cleaned, the bonding is not firm, and the glue is not continuous. The adhesive tape formed can not be closed.
4. The seal of the profile is not sealed with glue. The construction specification requires that when the aluminum profile of the Broken Bridge is combined horizontally and vertically, it should be inserted and sealed with sealant. In the actual construction, when the profile is combined, the leakage of sealant is more common. Another example is that at the splicing place of Casement and window frame cutting angle, the connection place of open screw and the disconnection place of rubber strip are not sealed reliably and effectively to form a seepage channel.
5. The setting of the drain hole under the window frame is unreasonable. The drain hole set under the broken bridge aluminum window should ensure the smooth elimination of water in the tank. In some construction units, no matter how big the window is, only one hole is opened. The aperture is too small, which is easy to block, causing water accumulation in the tank, especially when the water accumulation in the sliding window tank cannot be discharged as desired, under the action of wind pressure, it causes the inner groove to bubble and even blows rainwater into the room.
Causes of leaking doors and windows
1. Leakage caused by irregular window production:
(1) The window may not have a drainage hole, especially sliding window. All the rainwater accumulated in the pushing and pulling frame slot cannot be discharged. When it is full, it seeps into the house, or I didn't pay attention to blocking the drainage hole when sticking tiles on the outside window sill, and the rainwater in the pushing and pulling frame tank leaked into the wall.
(2) the window should be made of special sealant strip with good elasticity, standard thickness and matching with profiles to ensure that the glass bead is tightly pressed and seamless. The sealing strip must be a whole piece, the interface must be selected at the upper part of the window, and it is better to connect it with glue.
A good sealant strip smells of natural rubber, but it is coarse and hard, easy to crack and pungent.
2. Leakage caused by irregular window installation:
(1) the lower frame of the window uses explosive screws to connect the window and the wall. The head of the explosive screw in the window frame should be sealed with sealant, in this way, the water in the window frame will not penetrate into the wall along the explosion screw, but will be discharged along the drain hole.
This phenomenon of water leakage is quite secret. People always focus on whether there is any problem with the waterproof between the wall and the window gap. It is still leaking after repeated repair for many times, therefore, this problem is most worthy of the attention of the door and window industry installers.
(2) now many windows are corner windows, and there are many splicing places. These places should be sealed with sealant. If they are not sealed, it will become a hidden danger of leakage, this phenomenon of water leakage is also quite secret.
3. The gap between the window and the window sill of the outer wall is not tightly sealed, resulting in water leakage:
After the gap between the wall and the window is filled with foaming agent, disposable silverware set must be used to seal the gap between the window and the wall. Of course, the premise is that the gap cannot be too large.
If the gap is too large, waterproof mortar must be filled and leveled first. After the doors and windows are installed and fixed, foaming agent should be used to fill the windows. After curing, it should be cut flat. Finally, sealant should be applied on both sides of the inside and outside of the outer frame.
This is a very careful manual work. First, use a clean brush to clean the surface of the wall, then use another disposable silverware set, and then use a hand that sticks soap water to smooth it, this treatment is both beautiful and smooth and fills the hair crack between the wall and the window. But pay special attention to the wall must be dry.
4. The installation personnel do not work, and do not know how the original aluminium windows was installed and caused wall leakage.
Old houses used to use old-fashioned aluminum alloy doors and windows. When they were installed, they were connected with the wall by fixing pieces, and then filled with waterproof mortar to smooth them. Therefore, the fixing pieces were buried at least one centimeter in the wall, and the fixing piece is relatively long.
The correct method is to cut off the connection part between the fixing piece and the wall when there is a fixing piece, and then remove the window. If the fixing piece is forcibly removed, the waterproof mortar and mosaic of the window sill of the outer wall will burst together, in this way, the original waterproof is destroyed. If it is not repaired in time, it may leak after steel window after installation.
What should I do if there is water seepage at the bottom of doors and windows?
Reason:
(1) cracks occur at the junction of the door and window frame with the wall, and no sealant is used to fill and seal during installation, and rainwater seeps into the room from the crack.
(2) when the combination doors and windows are spliced, the box-lock and overlapping methods are not adopted, and the sealant is not used for sealing.
In order to prevent the door and window frame from leaking water, corresponding measures should be taken during the decoration construction:
(1) due to the difference of thermal expansion coefficient between aluminum alloy profiles and wall materials, under the influence of temperature, the connection between frame and wall is easy to produce hair crack.
In order to prevent water seepage at the crack, aluminum alloy door and window frame should be elastically connected with the wall, and the outside of the frame should be embedded with wood strips, leaving a 5mm × 8mm slot to prevent cement mortar from directly contacting with the frame.
During construction, the floating ash, mortar particles and other sundries in the groove at the joint should be removed first, and then the sealant should be injected around the joint with the wall inside and outside the frame body for sealing. The Glue should be continuously injected without omission, the bond should be strong.
(2) When splicing the combined doors and windows bar, sleeve insertion or lap butt should be adopted, the lap length should not be less than 10mm, and then sealed with sealant.
It is forbidden to use the method of combining planes with planes. At the same time, the exposed connecting screws should also be sealed with sealant to prevent water seepage.
The above is the knowledge about the causes of door and window leakage and how to deal with the water leakage at the bottom of the door and window. I hope it will be helpful to everyone.
Leakage caused by looseness between Windows and borders is the most common cause. On the one hand, when closing the door, the window will also produce resonance vibration. After a long time, the gap between the window and the wall will become larger and larger; On the other hand, it is caused by the poor quality of the window, the window with poor quality is insufficient rigidity, which easily deforms. The mortar layer beside the window frame will crack and fall off soon after use, thus causing leakage.
2. Irregular window installation causes water leakage
When the window lintel and window sill are installed, there is no dripping water tank and running water slope; The outdoor window sill is higher than indoor sill plate, and sill plate the plastering layer does not make a smooth slope or the slope is facing inward and sill plate cracking and other defects lead to leakage.
3. Leakage caused by poor drainage of window slot drainage holes
Some Windows may not have drainage holes, especially sliding window. All the rainwater accumulated in the pushing and pulling frame slot cannot be discharged out. When it is full, it seeps into the house; or I didn't pay attention to blocking the drainage hole when sticking tiles on outside window sill, and all the rainwater in the pushing and pulling frame tank seeped into the wall, resulting in water leakage; In addition, it has been used for a long time, drainage holes may be blocked by stolen goods, resulting in water flow not being discharged in time.
4. Water leakage caused by damage to the waterproof layer of the wall near the window
In the old house with a long room age, the water-proof layer of the wall around the window is damaged and the exploration items are leaking; In addition, when the old house is renovated and replaced with windows, the water-proof layer of the exterior wall is damaged due to unprofessional window removal, if it is not suitable, it will be repaired. After installing the new window, it is very likely that there will be water leakage.
How to prevent window seepage
1. Check the connection
Check the connection parts of the window frame frequently, tighten the bolts timely, and replace the damaged parts. Locate vulnerable parts such as shaft pin, wind brace, and floor spring. Check frequently and add lubricating oil regularly to keep them clean and whirling.
2. Check the Junction
Often check the joint between the window frame and the wall. If it is loose for a long time, it is easy to deform the frame as a whole, making the window unable to be closed and sealed. Therefore, the screw at the joint should be tightened immediately if it is loose.
3. Use must be standardized
In use, the action should be as light as possible to open and close, do not use too much force; When the window is opened, if any obstacles are found, the fault should be eliminated first. High-grade doors and windows, such as internal tilting windows, folding doors and windows, should be operated strictly according to the instructions.
4. Windows are often cleaned
Maintenance of Windows can prevent water leakage and prolong its service life. Daily cleaning is required to keep the surface of the window clean. When scrubbing, try to choose soft gauze or cotton silk to avoid scratching the surface of doors and windows. When there are stains and dirt, clean them with clean water, alcohol or neutral detergent.
5. Maintenance after rain
After rainy days, wet glass and doors and window frames should be wiped out in time, and special attention should be paid to wiping out sliding chute water. Sliding chute for a long time, the friction force increases, you can add a little oil or apply a layer of fire wax oil.
What should I do if water seepage occurs?
1. Re-seal the gap
If there is leakage caused by the gap between the window frame and the wall and the window sill, re-seal the gap. For the gap between the outer window frame and the wall window sill, it is better to clear the original seal and fill in the weather-resistant silicon sealant for sealing; While for the gap between the outer window frame and the window sill, it is better to clear the original seal, fill it with weather-resistant silicon sealant for sealing, and then seal it with sediment slurry for waterproofing.
2. Re-install Rhone
In view of the leakage caused by window frame Rhone blockage, the problem can be solved by keeping Rhone smooth. If there is a problem with the position of the drain hole, close the original hole and re-open the hole.
3. Re-make the waterproof layer
The window wall itself Leaks. The solution is to knock open the outer wall, repair it, and check whether it is firm after repair. Remember to lay a layer of waterproof layer.
4. New trim window sill
The outdoor window sill should be 20mm lower than the indoor sill plate, and the water slope should be set, and the rainwater discharge should be unimpeded. The gap between the window frame and the indoor sill plate must be sealed with weather-resistant and highly elastic sealant to ensure water tightness and prevent leakage. The window lintel and window sill should make enough drip water tank and running water gradient.
