Eliminates the angle of creep and allows slates to be laid on a roof with a pitch as low as 12 degrees.Improves the ventilation of the roof through the slates when used with a breather membrane.Cushions the slates and reduces breakage.400mm long & 100 per box.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Permavent is consulted before specifying.
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