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Overhang

The length of the overhang of sheeting into a gutter or spouting depends on the pitch of the roof and the site exposure to wind and rain.

The recommended minimum overhang for roof sheets is 50 mm measured on the rake. When the ends are not baffled by spouting, the recommended minimum is 70 mm.

Minimum Overhang

Minimum Overhang

 Underlay must not overhang the fascia by more than 20 mm or, if eaves flashings are used, terminate on the upper side of the flashing. Do not drape underlay into the gutter.

 

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Minor adjustments on illustration for improved accuracy, some minor content editing for clarity.

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