PRODUCT IS DISCONTINUED - PLEASE CONTACT US TO DISCUSS ALTERNATIVES Celotex Crown-Bond is a brand new product for use in flat roof systems. Representing the next phase of Celotex innovation Crown-Bond is a rigid polyisocyanurate (PIR) board which delivers cutting edge thinness, increased dimensional stability and added robustness in a bonded single ply flat roofing system. Crown-Bond has innovative composite facers on both sides and with a low lambda value of 0.022W/mK offering high thermal performance. Crown-Bond is suitable for bonded single ply membranes and can be used on fully sealed metal, timber and concrete decks. Crown-Bond provides excellent compressive strength, giving it increased dimensional stability and added robustness. Crown-Bond can be secured to the deck with fully bonded systems or thermally broken or mechanical fasteners. To find out more about this item or any other products in our range please speak to a member of our experienced sales team today..