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Valley Fixing

Valleys may be securely fixed (through-fixed) at the upper end/head only. The remaining length of the gutter must be retained using alternative methods that allow for thermal expansion and contraction without piercing the sole of the gutter.

Alternative means of securing the valley gutter to the substrate with allowance for thermal movement include:

  • A clip system.
  • A compatible washered nail or screw or a galvanised nail, bent to form a cleat, provided they do not penetrate the sole of the gutter.

 

Correct Valley Fixing, Allowing for Thermal Movement

 

 

 

Valley Junction at the Apex, Metod 1

 

 

 

 

Valley Junction at the Apex, Metod 2

 

 

 

Clause: 
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Clause Number: 
5.5.1
/cop/roof-drainage/valleys#valley-fixing
Revision Category: 
2 - Editing and rearrangement
Revision Detail: 

Rearranged layout.

Clarified statement about positive (through) fixing.

Replaced the old illustration for Clip System with Correct Valley Fixing, Allowing for Thermal Movement

Added illustrations for Valley Junction at the Apex.