A Light Weight Calcium Silicate Board which is easy to cut on site. Excellent Insulation Value. Heat Protection Board for Narrowboats Complies with BS8511:2010. Excellent Creep - Resistance. We are Authorised Distributors for SCRUFFS WorkWear, Defender Power and Light, HOLDON Tools, Punk Accessories, Snickers Workwear and Polyco Hot Gloves.