Product Features
Corodrain valley troughs are a durable, economic alternative to lead. Corodrain A-type valley includes 35mm wide sanded strips for mortar adhesion. Meets all the requirements for the narrow valley troughs in NFRC Technical Bulletin 28.

• 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
• Suitable for use on roofs with pitches from 22.5° to 49°
  
• Can accommodate a maximum difference between two rafter pitches of 10°
  
• Designed for use with interlocking tiles, can also be used with natural and manufactured slate