Quote Originally Posted by WallyWest View Post
Saw this townhouse where it looks like they screwed in flat sheets on the exposed concrete wall. Looks ok. Although parang marami pa rin yatang entrance point for water to seep in. I guess may waterproofing pa rin sa concrete before they applied the flat sheets.

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shortly after construction, our house's firewall would regularly leak during the rainy season.
dad tried various brush-applied so-called waterproofing products, to no avail.
finally, he covered our long-leaking firewall by nailing on, flat GI sheets.
after several decades, it hasn't leaked yet.