The document discusses a new sealant gun product that allows application of air and fire seals at height without needing elevated access equipment. The sealant gun was developed by Jason Jones and can apply conventional mastic tubes and foil sealants from the floor up to 3.5 meters high. Using the sealant gun means scaffolds do not need to be built as high, avoiding problems with grid ceilings and other services. The gun is available in 1 and 2 meter lengths.