Sydney Cavity Flashing Repairs Northern Beaches.
Cavity flashings run continuously along the length of the wall and are designed to divert water out through the weep holes to prevent water moisture and water ingress into the property.
When the waterproofing membrane is installed incorrectly, we recommend the cavity flashing is replaced to remediate these issues.
STRUCTURAL REPAIRS
Structural issues can be repairs or replacements to the roof, foundation, floors or permanent exterior walls and support beams/joists of the building. We work with structural engineers to remediate these issues to ensure the structural integrity of your property.
Our services for structural repairs include:
- Lintel Repairs and Replacement
- Steel Beam Reinforcement
- Crack Stitching

Prembuild is a Sydney remedial building company with 30+ years industry expertise.
Based on the Northern Beaches, our remedial builders service the entire Sydney metropolitan area.
Our full range of remedial building services includes all aspects of residential and strata building remedial works.
Our experienced team of licensed remedial builders offer a premium service with all remedial works delivered on time with quality, efficiency and reliability. We conduct the highest standards of Safety and Environment Management and Quality Assurance with all projects carried out and executed.