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The Corodrain B Type Valley Trough is for use with double lap slates and tiles, which are dry bedded.The valley fixes over the batten for fast and simple installation.
SUITABLE FOR USE ON ROOFS WITH PITCHES FROM 17.5° TO 55°
CAN ACCOMMODATE A MAXIMUM DIFFERENCE BETWEEN TWO RAFTER PITCHES OF 15°
DESIGNED FOR USE WITH NATURAL SLATE, MANUFACTURED SLATE AND PLAIN TILE
BBA Approved Cert No. 89/2153
At least durable as lead
Similar in appearance to lead
Less prone to theft
Quick to install
UV light and acid rain resistant
Smooth surface inhibits the growth of moss & lichen and build-up of debris
Fire resistance to SAB to BS476 part 3 and Class 3 BS476 part 7
