Gap Filling, Gaskets & Board sell a range of Gap Filling, Gaskets & Board products, such as fire pillows, fire boards, putty pads, fire rated mortar and more. You can buy fully CE marked products online using our easy shopping cart system. Secure payment card service via WorldPay and PayPal. For more information on any of these passive fire products please view the range below or use the filter options to select your requirements.