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Valley Fixing

Valleys should not be positively fixed, except at the head, because that would inhibit expansion and can produce noise.

Alternative means of securing the valley gutter to the substrate include:

  • A clip system allows for thermal movement and security.
  • A compatible washered nail or screw or a galvanised nail, provided they do not penetrate the sole of the gutter.
/cop/roof-drainage/types-gutter#valley-fixing
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