Reducing roof damping

Few simple steps to reduce roof damping

Use a good water proffing liquid 

Before applying the coat

Clean the surface throughly using wire

Brush , remove all small debris

And clean remove the dust

And then apply one coat of 

waterproffing coat. Allow it to completly dry for about 24 hours

And then apply one more coat of waterproffing.

This has to slove the problem if the problem continouos contact some experts on ......