Q: Dr. Yao Hello, I recently received a roof leakage project, the roof structure layer made SBS waterproof roll above the roof layer, then the insulation layer, and finally the protective layer, due to the structure layer cracking, at the same time

Waterproof layer failure, multiple leakage, for price consideration, the owner asked not to remove the original roof structure, using local conservative leakage method, so I in the back water using water, oily polyurethane mixed grouting method, grouting effect immediately, but not a few days originally no leakage place leakage, excuse me what reason is this?

A: Hello, this is a common problem, and also a problem that troubles many plugging people.The reason for this phenomenon is that water is not porous, and it will choose to seep from the place with the weakest structure. If the weak place is blocked by grouting, the water will seep from the weak place, so once the place without no leakage becomes the weakest place, there will be water seepage.

Q: That this problem is very difficult ah, blocked here there will leak, and then block there other places will leak, when is the head ah, ah ……

A: not every project will appear in this situation, if the structure layer in addition to a few cracks or weak points, other places are very dense, just need to plug this a few weak points, if the structure layer itself pouring quality or maintenance quality, will lead to structure layer has a lot of potential weak points, this situation will appear you say here medical and pain.

Q: And how should we deal with the latter?

A: Our company provides 2 solutions to this problem, and you can choose according to the actual situation.

Q: Great, Dr. Yao, which are the two solutions?

A: The first scheme is to spray HW-80 high-permeability mortar on the back surface, 1 thickness of 2mm, spraying 2-3 times, and then block the local leakage the next day. The advantage is that it can reinforce the whole structure layer, and there is no need to master the grouting technology, and have low requirements for operators.

Q: So why do the local leak block the next day?

A: Because if the water pressure is large, there will be 2-3 points still leaking the next day, equivalent to leaving 2-3 leakage holes, elsewhere the mortar has been white, indicating that the strength and permeability have available. At this time, we only need to block the leakage king with the 2-3 leakage points, and then spray HW-80.

Q: Oh, so, the premise of this method is to shovel the putty layer clean, exposing the clean structural layer.So what is the second solution?

A: yes.The second scheme is to rely on grouting technology, but here the grouting needs to wear the structure layer, the grouting to the structure layer, and between the structure layer and SBS roll, let the slurry spread as far as possible, equivalent to the interior of the structure and meet the surface rebuilt a new waterproof layer, as long as the reengineering waterproof layer can be paved, can completely solve this problem.

Q: What material should be used for grouting the waterproof layer?

A: We can use our grouting immortal water, which is heat and aging, and can live the same life as the structure. It is not recommended to solidify with water, because the roof's long-term solidification of ultraviolet light is easy to cause water loss and shrink, and the life pipe is not long.

Q: Know, thank you, Dr. Yao. I'll immediately try your two plans to see which one is more economical and simple.

A: OK, not welcome.

Jiushi has developed a series of new waterproof protection and leakage plugging products with independent intellectual property rights under "Jiushi", which can provide customers with the most advanced engineering waterproof, home decoration waterproof, leakage repair, brick leakage, reengineering waterproof layer, concrete surface modification and other comprehensive solutions.