Flat roofs: built-up bitumen felt - remedying rain penetration at abutments and upstands.

Flat roofs: built-up bitumen felt - remedying rain penetration at abutments and upstands. - Garston, Watford BRE 1983 - 1 sheet : ill. ; 30cm. - Defect Action Sheet 34 (Design) DAS 34 .


BITUMINOUS FELT
FLAT ROOFS
RAIN PENETRATION
ROOFING

690.25