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Sheet Requirements

 
Roof area less than 25m²
Roof area 25 - 100m²  

Rafter Pitch
(degrees)

Valley Type Max. Vally
Lenght
Valley Type Valley Type
Lenght
Minimum Lap
Lenght
17.5 to 22 B/D 7.0m - - 350mm
22.5 to 29 A/B/D 7.0m B/D 14.5m 300m
30 to 34 A/B/D 7.5m B/D 15.0m 200m
35 to 39 A/B/D 7.5m B/D 15.5m 200m
40 to 44 A/B/D 8.0m B/D 16.5m 150m
45 to 49 A/B/D 8.5m B/D 17.0m 150m
50 to 55 B/D 9.0m B/D 18.5m 150m
   
Valley Weights Valley Thickness
Standard valley troughs (HD, HA, HB) 1.64kg/m² Standard valley throughs (HD,HA,HB) 1.3mm
Heavy weight valley troughs (DX,AX,HB) 2.10kg/m² Heavy weight throughs (DX,AX,BX) 1.6mm
3.0m Long Abutment Soaker 
AS30PK10

January Sale - 5% Off Orders Placed Online Over £150.00. - Ends On 8th Jan 2009
Provides a weatherproof protection between a sloping roof and a vertical abutment. The bonded sanded strip gives maximum mortar adhesion, and the two bars along the horizontal section prevent moisture entering the roofspace.

Sold in packs of 10
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