Klober launches over rafter insulation boards

Klober Permo® therm is a Kooltherm® insulation board with tongue and groove edges, integrated underlay and self-adhesive edge strips for sealing laps. With LABC approval, it is suitable for all pitches but, unlike square-edged boards, it will not provide an air leakage path. Permo therm is installed over rafters and not only provides added height within the roof space but removes the need for separate underlay installation. Boards can be laid either from left to right or right to left with no ventilation of the batten/counter-batten cavity needed other than where impervious or tight-fitting roof coverings are used.

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