Some time it works for 30 years if you make the layer in slop and rain water never dump on it and it flows out from roof.
How to stop leaking concrete roof in india.
Sealing leaks and waterproofing when repairing a leaking roof the fundamental issue is that it is the reinforced concrete that is leaking and the best approach is to remove the screed and expose the reinforced concrete so that leaks can be found and properly sealed.
It is also insulator keeping the roof cool from sun and control room temperature and dont allow water seeping or leakage but every 10 to 15 year you have to change it.
You may also visit the sides of your building drainage pipes etc.
Roof flashing is a metal sheet installed at roof valleys gutter chimneys skylights ridges roof wall intersections to prevent water leaks.
2 grouting waterproofing a leaking flat concrete roof with portland cement.
Fill in large cracks with mortar or roofing cement then apply a good concrete primer.
Once the primer is dry apply an elastomeric sealant to the cracks corners and damaged areas and then to the entire roof.
We usually in pakistan mix mud and wheat straw fodder the remainings of wheat after crushing.
Apply roof flashing technique to prevent water leakage from the roof.
Identify the type of defect and rectify accordingly.
After mixing this in mud clay we put a layer of 3 to 5inches on concrete roof.
Test the adequacy of waterproofing done.
Step by step rectification of water leakages in terrace slabs.
The screeding can then be replaced.
Follow up with a second coat after 24 hours have passed.
Redoing waterproof on the.
These are the most common sources of leakage.
Check the entire roof surface look out for ponding water and inspect the plumbing lines.