Termite foam injection: the professional's guide

Termiticide foam fills wall cavities, voids and galleries with even, clinging coverage that liquid cannot match. Liquid soaks and drains to the lowest point. Foam expands to fill the space, coats every surface including the undersides of timbers, and holds the active ingredient where the termites are working. That is why foam injection has become standard practice for cavity and void treatments.

Where foam wins over liquid

• Wall cavities: foam expands upward and sideways from the injection point, coating both faces of the cavity instead of draining to the bottom plate.
• Voids and dead spaces: under bathtubs, behind cabinetry, in service penetrations and blocked galleries where trenching cannot reach.
• Active workings: foam pushed into live galleries carries the termiticide through the system with minimal disturbance.
• Pre-construction and perimeter work stays liquid territory: trenching, flooding and soil treatment want volume, not expansion. Most professionals run both.

The equipment

A termiticide foam injector blends the mixed termiticide with air to a shaving-cream consistency, then pushes it through an injection tip or wand.

• Handheld pump-up injectors: the Klager TERMIFOAM 1.2L and Gloria TERMIFOAM 3.0L and 5.0L are the workhorses for cavity injection on inspections and treatments. Portable, precise and easy to decontaminate.
• Air-driven systems: the 12.0L stainless air-driven TERMIFOAM platform suits high-volume work and all-day use, running off a compressor at up to 130 PSI.

Seals matter here too

Termiticide concentrates, especially solvent-carried ones, perish standard seals. Match the seal to your product: many water-based termiticides are fine with standard or VITON builds, but confirm against the SDS. Send us the product name and we will check it for you. When a unit does start weeping, a genuine seal kit fixes it for a fraction of replacement cost.

Getting a good foam

• Mix to the termiticide label rate first, then add the foaming agent at its label rate.
• Dry, stiff foam climbs and clings; wet foam collapses and drains. Adjust air and concentrate until the foam holds its shape on a vertical surface.
• Inject low and let the foam rise. Watch weep holes and outlets to confirm fill.
• Rinse the unit after every job. Termiticide left in the tank is the fastest way to kill seals and check valves.

Frequently asked questions

What expansion ratio should I run?

Most cavity work runs between 10:1 and 30:1 depending on the termiticide label. Follow the label first, then tune for a foam that clings without collapsing.

Can I use my normal sprayer for foam?

No. A sprayer atomises liquid. Foam injection needs a foamer or injector that blends air into the mix. They are different tools.

Do you supply pest controllers directly?

Yes, across Australia and New Zealand, including trade accounts for firms that buy regularly and genuine parts to keep units in service.

See the pest and termite control range, or request a quote and tell us your termiticide. We will match the injector and the seals.