Expanding Foam Gun Cleaner

Expanding foam gun cleaner removes uncured polyurethane foam from applicator guns before it sets and causes permanent damage. Anyone who has left a foam gun overnight without cleaning knows the result: a seized trigger, blocked nozzle and a gun heading for the skip. This cleaner prevents that expensive mistake.

The solvent works on fresh, uncured foam only. Once polyurethane foam has cured and hardened, no chemical cleaner will shift it the foam bonds at a molecular level and becomes mechanite. Cleaning immediately after use, or at least within the same working day, keeps guns functioning properly for years rather than months.

Why Gun Maintenance Matters

A decent foam gun costs between fifteen and forty pounds. Professional-grade guns from manufacturers like Ancora and Soudal run higher still. Replacing guns every few weeks because of cured foam buildup wastes money and causes delays when the replacement hasn’t arrived and the job needs finishing. Regular cleaning with expanding foam gun cleaner extends gun life significantly and maintains the precision that makes gun-grade foam worth using in the first place.

The cleaner attaches directly to the gun’s thread, same as a foam canister. A few trigger pulls flush the solvent through the internal passages and out the nozzle. The process takes under a minute. Some installers keep a can of cleaner attached to each gun when not in use, maintaining positive pressure that prevents any residual foam from curing inside the mechanism.

On-Site Storage

Keep the cleaner in the van alongside your foam stock. End of day, quick flush, gun goes back in the toolbox ready for tomorrow. The routine becomes automatic after a week or two. Skipping it becomes unthinkable once you’ve had to bin a good gun because of laziness on a Friday afternoon.

Expanding foam gun cleaner also removes uncured foam from hands, tools and surfaces where overspray has landed. The solvent evaporates quickly and leaves no residue. It works on metal, plastic and most painted surfaces, though testing on an inconspicuous area first is sensible practice with any solvent product.

The 500ml aerosol can provides enough cleaner for dozens of gun flushes. One can typically lasts a busy installer several months, making it one of the cheapest forms of tool insurance available. The cost of replacing even one foam gun pays for a year’s supply of cleaner.

Compatible with all standard screw-thread foam applicator guns. The fitting matches the universal thread used by foam canisters from all major manufacturers including Soudal, Everbuild, Bond It and Fischer.