Insulation boards 25mm High Temperature Calcium Silicate Board Set To Cover 1mt2. These are offcuts of board approx 240mm x 580mm And we would supply 8 of these to cover over 1 mt square The boards are made of calcium silicate which is a lightweight non combustible material. Suitable for use around wood burning stoves as it can be tiled over if the correct adhesive is used. Suitable for use in narrow boats Complied with BS8511:2010 The latest recommended practise for installation of solid fuel stoves in boats. Full sized boards and different thicknesses also available Contact us for more details