Our range of open valley troughs are suitable for roof pitch differentials up to 15o

Narrow Open Valley Trough for Tile Roofs

The open valley trough range provides drainage channels at the roof valleys. These traditional, pre-formed GRP troughs are perfectly safe to use when wanting to collect rainwater runoff. Designed with a greater capacity, they are a lightweight and cost effective alternative to lead. Being manufactured from GRP, the valley troughs have the following benefits;

  • Up to half the cost and time of traditional lead installation
  • Semi-skilled fitting procedure
  • Light in weight and easy to handle
  • 30 year service life guarantee
  • Do not streak or stain
  • No value to the thief
  • Contains recycled glass

Product Codes

HDL 361 and HDL 362

Application of the Narrow Open Valley

The HDL 361 and HDL 362 are suitable for tile roofs.  They are designed for ‘narrow’ application compliant with NFRC Technical Bulletin 28.


Open Valley Troughs Datasheet
Open Tile Valley Troughs Installation Recommendations
BBA 87 1915 Certificate GRP Flashing – Valley Tiled
HDL 361 and 362 Drawing
HDL 361 and 362 DWG