Practical problems and solutions in the use of foam caulking agents

1. Foam caulkCan’t type?

Foam caulkAs long as you can shake it, you can hit it and you can finish it. If you can shake it but you can’t hit it or you can’t finish it, it may be due to the following reasons:

A .Foam caulkThe gun is not installed in place and the valve is not opened. Tighten it hard Foam caulkGun, turn Just open the valve.

B.Because the temperature is lowbelow 5℃), cracks are formed If it does not come out, you can put the jar in warm water for about five minutes and it can be used normally.

C.Foam caulkThe valve appears” knotted valve” phenomenon, which may be caused by long-term inversion. You can remove the can, put it aside for five minutes, insert a nail into the valve, and hit it gently with a hammer. When you hear the ventilation sound, you can immediately put on the glue gun and use it. It is recommended to use it once.

D.Foam caulkThe muzzle, adapter or barrel of the gun is clogged. Clean it immediately. You can use cleaning agent to check whether it is clear; or you can directly replace the glue gun with a new one.

2. WhyFoam caulkWill it leak?

Foam caulk is waterproof is that its cells have a closed-cell structure. The closed-cell ratio of its internal structure must reach 80% to achieve a waterproof and thermal insulation effect. However, some manufacturers deliberately cut costs because they pursue profits too much, add fillers, and increase the weight of white materials. Such products have low foaming volume and the shrinkage will exceed 50%, so they add pore opening agents to open the foam. , to solve the problem of shrinkage, but the elasticity of the foam is gone and it leaks, so it has little endurance.

It is recommendedto use special wooden doors Foam caulkagent.

3. Is there any flow after typing?

Because the temperature is below zero and it will flow out, the jar can be placed in warm water (40— 50 degrees) can be used normally for about five minutes. The temperature is above five degrees�It is recommended to use winter-type products.

4. Why sometimes Foam caulk Punch it into powder?

Because the temperature is lower than five degrees, there is a powdery phenomenon when it is not completely cured, but it is around zero24 hours The powdery appearance will disappear afterward.

5. Foam caulkWhy is it shortened?

Some customers use low-grade products because the products they use are not specialized. Some manufacturers deliberately cut costs, add fillers, and increase the weight of white materials because they are too pursuing profits. However, such products have low foaming volume and the shrinkage will exceed more than 50%. . Most of them are used by cheap customers and are made of real wooden doors.

6. Why are there holes or hollows at the bottom?

This situation will occur because the climate is dry and the air humidity is lower than 60%. At this time, a humidifier or water mist can be used to increase the air humidity.

7. During construction How to deal with the problem that the adhesive force is not good and the glue on the surface of the wall material cannot stick?

First make sure that there is no oily material or Teflon coating on the adhesive surface, and then make sure to clean the dust on the adhesive surface and sand or spray a small amount of water on the adhesive surface.

8. Encountering strength What should I do if the glue is easily blown away by wind or during high-rise installation?

Shake the can twice as often as usual, and then follow the nozzle when the glue comes out. Try not to swing the nozzle to fill it. You can work in sections. Apply about 0.3% glue on both ends of the wall. The vertical seams can be filled in the lower half first, and then the other window seams can be filled.

9. If the gap is particularly large or the hours are unusually large during construction, this should How to do it?

When encountering a large seam, if it is horizontal, you can first put a layer on the bottom layer, and then fill in other vertical seams, and finally on the original basis Fill and caulk. This can avoid wasting a lot of glue by filling it all at once. When you encounter a very small gap, you can not fill it first, and then use about 100 grams of glue at the end of each can to fill it.

10. Curing is relatively slow what to do?

Spray a small amount of water on the adhesive surface, and try to use a swinging gun nozzle to fill it to increase the air when the glue comes out of the gun and shorten the curing time. If the construction period is short, you can choose pre-foamed products, which can shorten the curing time. Generally, surface treatment can be done 40 minutes after the glue is punched, and it will be completely solidified and will no longer swell or shrink.