Make sure the gutter around the sump box is clean and dry. Blow dry with heat gun if damp Continue to roll the liner two metres beyond the sump box…
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Gutter and Roof Talk
UK's leading supplier of metal roof refurbishment systems
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HD Sharman Ltd.
High Peak Works,
Chapel-en-le-Frith,
High Peak,
Derbyshire SK23 0HW
What are you looking for?
Sump box complete with outlet