Hi can I buy a bag of the green decorative stones used on your torch felt Unfortunately we don’t sell the individual bags of green decorative stones. Hi can you provide u value calculation for a warm pitched tiled roof with 50 mm over rafters and 100 mm between rafters please we are looking to provide a layer of torch on over an asphalt roof, which has been painted with solar reflective paint, and has bad cracking. Please recommend a product.