4m by 3m
Repair felted flat roof
Strip off existing felt ect.
Recover as per :
First layer BS 747 glass fibre underlay
Second layer BS 747 HP Polyester underlay bonded to above
Top layer BS 747 HP HT Polyester sheet
Welts and upstands formed with HP HT Polyester mineral surface felt
Final covering a coating of bitumen gritting and layer of limestone chips
Archive for Roofers, Guttering