Gap Fillers

This range covers the gap fillers that handle real jobs — not cosmetic touch-ups. Structural epoxy pastes for concrete repair and steel bonding, acrylic sealants for static joints around frames and cornices, expanding foams for irregular cavities and acoustic sealing, and rapid-set plugs for stopping active water leaks in concrete and masonry. Each product is matched to a specific gap type: structural voids that need compressive strength, movement joints that need flexibility, or pressurised leaks that need to stop now.

Selection comes down to the substrate, the gap width and what the joint has to endure. Epoxy pastes like Megapoxy 69 and P1 deliver 60–120 MPa compressive strength for permanent structural fills. Acrylic sealants handle low-movement perimeter gaps with ±5% flexibility and paintable finishes. Expanding foams fill irregular cavities around pipes and window frames without distorting the surround. And products like Gripset C-Plug and Mapei Lamposilex set in under 90 seconds to stop active leaks — Lamposilex is AS/NZS 4020:2018 certified for potable water contact.