A mastic gun pushes sealant from a cartridge through a nozzle. A foam gun attaches to compatible gun-grade expanding foam and controls its flow through the gun barrel.
Caulking Guns for Controlled Sealant Application
A steady bead is easier to achieve when the applicator suits the cartridge and the space around the joint. MacBlair stocks Tala DIY and professional mastic guns, plus ProDec skeleton and heavy-duty revolving caulking guns. A revolving frame can help keep the nozzle oriented while working around corners or changes in direction. Check the cartridge size and gun specification before buying.
The range also includes an Evo-Stik expanding foam gun for compatible gun-grade foam. A foam gun offers more controlled dispensing than a simple straw applicator, but the foam product and cleaning procedure still matter. Follow the foam instructions, protect surrounding finishes and clean the gun with a compatible cleaner as directed before residue cures.
Accurate preparation improves the result. Use retractable utility knives for appropriate trimming and measuring and marking tools where a bead or infill must follow a set line. Browse all MacBlair hand tools for the rest of the kit.
Mastic Foam Guns FAQs
Its frame can rotate around the cartridge so the nozzle stays oriented as the joint changes direction. This can make a continuous bead easier around corners.
No. Check the cartridge size and format against the gun specification. A good fit allows the plunger to push evenly without distorting the cartridge.
Follow the foam and gun manufacturers instructions and use a compatible cleaner before the foam cures. Do not assume a general-purpose solvent is suitable for the gun seals.
The nozzle opening may be too large, the trigger pressure inconsistent or the gun moving at different speeds. Cut the nozzle to suit the joint and test the flow on scrap material first.