GRP Dry Valley
Use GRP Dry Valley troughs for roof pitches of up to 60º. Where feasible, we recommend the use of a suitable valley board. The underlay material and battens should be fixed in accordance with standard roofing best practice with a batten running the length of the valley on each side to accommodate the external raised water bar section.
Hambleside Danelaw supply our GRP Dry Valleys in the low profile versions.
Also, we keep GRP Bonding gutters for joining 2 different types of roofing materials together and GRP valleys for slates and tiles.