TERM-seal™ Aqua Block Plus Termite Barrier Coating

TERM-seal™ Aqua Block Plus is a DIY termite barrier coating and waterproofing compound designed for masonry, brick, concrete and fibrous panelling. The coating cures to form a seamless, flexible and termite‑resistant membrane. It contains the active control agent Bifenthrin and is available in 4L and 10L pails to suit both residential and commercial projects.

Why Choose TERM-seal™ Aqua Block Plus

This highly engineered acrylic polymer coating provides dual protection against moisture and termite entry. It is ideal for areas that will sit below ground level after backfilling or site remediation. Because termites often seek hidden entry points, sealing joints, cracks and penetrations is essential for long‑term protection.

How the Termite Barrier Coating Works

The coating forms a continuous membrane over concrete, timber and masonry surfaces. When applied correctly, it blocks termite access through slab edges, construction joints and foundation gaps. This helps prevent concealed termite entry into the structure.

It is a unique coating for concrete and timber, especially those parts which will end up under the normal ground level after backfilling or site remediation. Termites, aka white ants, always seek invisible ways into structures if possible so all joints, expansion gaps, even cracks in foundations may provide unseen access.

Seal your building before backfilling to ensure long-term proofing against termite ingress and infestations.

Note: Subterranean termites are on occasion capable of bridging termite barriers and therefore regular inspections, as detailed in Australian Standard AS 3660.2, will significantly increase the probability of detection of termite activity before any damage or costly repairs are required.

Please follow the Directions for Use on the product label.

Application Information

Slab Edge Treatment

 Ensure the slab edge is cleaned, free of dust and dirt and primed, with TERM-seal™ Aqua Block Primer, before treatment. Apply a continuous coat of TERM-seal™ Aqua Block Plus and when dry apply a second coat to a minimum thickness of 1.3mm.

Construction Joints

 Thoroughly clean the concrete surface, removing all dust and dirt, 60mm on either side of the joint. Apply a coat of TERM-seal™ Aqua Block Primer and then a thick continuous coat of TERM-seal™ Aqua Block Plus along the joint. Roll in TERM-seal™ Reinforcing Band ensuring all air pockets are removed and then apply another thick coat of TERM-seal™ Aqua Block Plus. Once the topcoat has set, a third coat should be applied.

Walls, Concrete and Masonry

When applying TERM-seal™ Aqua Block Plus as a barrier to walls, masonry or concrete, all surfaces must be cleaned and primed with TERM-seal™ Aqua Block Primer. In these situations, the TERM-seal™ Aqua Block Plus must be a minimum width of 50mm.

Backfilled Walls

In situations where hydrostatic water pressure may exist, all joints must have an application thickness of no less than 4mm. The treated wall must be covered with corflute or a protective cover to prevent penetration by debris. Allow at least 48 hours for the TERM-seal™ Aqua Block Plus to cure before returning soil to the wall area.

Coverage Guide

 For a 10 litre bucket, 4 square metres dependant on application thickness and the number of coats.

Compliance and Safety

TERM-seal™ Aqua Block Plus is APVMA approved (80607/101262). 

Follow the Directions for Use on the product label. 

Regular inspections in accordance with AS 3660.2 are recommended.