Fixing Directly to Concrete Soffits
K10 Soffit Board can be fully restrained to a concrete soffit by the use of 11 No. approved insulation fasteners with a minimum head diameter of 35 mm.
The fasteners should be evenly distributed over the whole area of the board and must offer a minimum 40 mm penetration into a solid substrate. Board joints should preferably be staggered.
Fixing to Timber Battens / Proprietary Grid Systems
Alternatively, a treated timber batten lay-out may be adopted if there is an uneven surface or mechanical services present and direct fixing is not possible. 50 mm x 25 mm battens should be placed at 600 mm centres to coincide with the edges / centre of the boards. The battens should be fixed to the soffit by the use of a suitable fixing method e.g. shot-fire may be considered.
K10 should then be fixed to the treated timber battens using suitable fixings. These should be placed at maximum 300 mm centres (maximum 200 mm when using nails into timber) in rows not greater than 600 mm apart.
K10 can also be fixed to a proprietary grid system comprising metal furring bars.
Manufacturer's advice should be sought regarding the type and required number of fixings for such applications. Please contact the Kingspan Insulation Technical Service Department (see below) for further information.
Fixings should be not less than 12 mm from board edges.
Exposed joints should be covered with a suitable cover strip.
For aesthetic appearance, consideration may be given to the application of a PVC cover strip at board joints.
For advice on alternative fixing refer to:
EJOT UK Ltd - Telephone: +44 (0) 1977 687 040 - www.ejot.co.uk/applitec/construction
Hilti Ltd - Telephone +44 (0) 800 830 858 -
Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side.
Ensure accurate trimming to achieve close butting joints and continuity of insulation.