Product Data Sheet Show all documents

Cromar® 90 Degree Top Closure

A preformed GRP Valley Trough.

The 90° Top Closure GRP Valley Trough is a factory manufactured, prefabricated drainage component designed for installation at the intersection of two valley trough runs forming a right-angle change in direction.

  • 90° factory formed unit for accurate alignment and ease of installation.
  • Top closure design to improve water tightness and reduce leak risk.
  • Manufactured from GRP for high strength to weight ratio.
  • Corrosion and weather resistant, suitable for longterm external exposure.
  • Smooth internal surface to promote efficient water flow and minimise debris buildup.
  • Low maintenance with long service life.
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Product Data Sheet Show all documents

Usage

  • Roof valley drainage systems.
  • Industrial, commercial and infrastructure buildings.
  • Flat and pitched roof interfaces with internal or external valley troughs.
  • New-build and refurbishment projects.
 

Advantages

  • 90° factory formed unit for accurate alignment and ease of installation.
  • Top closure design to improve water tightness and reduce leak risk.
  • Manufactured from GRP for high strength to weight ratio.
  • Corrosion and weather resistant, suitable for longterm external exposure.
  • Smooth internal surface to promote efficient water flow and minimise debris buildup.
  • Low maintenance with long service life.

Packaging

Cardboard boxes containing 10 units.

Product Details

Product Information

Shelf Life

A preformed GRP item with no specific shelf life.

Storage Conditions

Store in cool, dry place, away from direct sunlight.

Application

Application steps

APPLICATION INSTRUCTIONS

  • Designed for straightforward integration with standard GRP valley trough sections.
  • Capable of being bonded, sealed, or mechanically fixed in accordance with project specification.

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