Crack Injection
Gumthorn delivers expert crack injection solutions across the UK for a wide range of structures, including bridges, underground tunnels and subways, manholes, inspection chambers, concrete walls and slabs, brickwork and masonry buildings, as well as multi-storey and underground car parks. We serve clients in multiple industries on a nationwide scale.
Our team handles every type of crack injection repair, from dry, non-active structural cracks that need strong bonding and restoration, to wet or actively leaking cracks that require effective water-stopping, and those involving ongoing movement where flexibility is essential. We apply a variety of proven systems, such as epoxy resins for rigid structural repairs, polyurethane foams and resins for sealing against water ingress, and elastomeric gels suited to dynamic or flexible conditions.
Common Issues Addressed by Crack Injection
Crack injection becomes necessary when concrete or masonry develops defects due to:
Substandard construction practices
Such as inadequate compaction, improper mix design, or poor placement — leading to early weaknesses.
Structural shifts or settlement
Caused by ground movement, foundation issues, or external loads that stress the elements.
Long-term deterioration
Particularly from carbonation (where atmospheric CO₂ reduces the concrete’s alkalinity, exposing reinforcement to rust) and chloride ingress (often from de-icing salts, seawater, or contaminated environments), which accelerates corrosion of embedded steel and creates expansive cracking.
These problems can compromise structural integrity, allow water penetration, and lead to further damage if not addressed promptly. Gumthorn tailored injection techniques provide reliable, long-lasting repairs tailored to the specific crack type and environmental conditions.