i got reports from two companies on damp proofing. one claims to drill 12 mm holes in the wall and then apply damp proof cream inside. the other claims to drill 10 mm holes in the wall and apply damp proof liquid with high pressure pump.
is any method better than the other one?
Thanks in advance!
PS:the second is twice more expensive...
is any method better than the other one?
Thanks in advance!
PS:the second is twice more expensive...