💦 Waterproofing Solutions Across Central West NSW
GMG Waterproofing Solutions provides licensed waterproofing, rising damp treatment and remedial rectification across
Central West NSW. We work across new builds, renovations and existing properties, with systems selected to suit the substrate, exposure, intended use and site conditions.
Internal Wet Areas
External & Below-Ground
Rising Damp Treatment
Remedial Rectification
Bathrooms, laundries, ensuites and other internal wet areas, including preparation, detailing and compliant waterproofing systems.
Balconies, rooftops, terraces, retaining walls, basements, planter boxes and below-ground areas, including hydrostatic pressure and moisture barrier systems
DPC injection and remedial treatment for rising damp, moisture migration, salt-affected masonry and failed or deteriorated damp-proof courses.
Assessment and rectification of failed waterproofing, water seepage, cracking, moisture ingress and compromised waterproofing systems.
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Internal Wet Area Waterproofing
Bathrooms, ensuites, laundries and other internal wet areas require careful substrate preparation, junction sealing and compliant waterproofing detailing. GMG provides wet area waterproofing across Central West NSW for new builds, renovations and existing properties, with systems selected to suit the substrate and intended application. Waterproofing certification is available where required.
Bathrooms & Ensuites
Laundries & Internal Wet Areas
Under-Screed Waterproofing
Over-Screed Waterproofing
Penetrations, Joints & Waterstops
Waterproofing Certification
External & Below-Ground Areas
​External and below-ground areas across Central West NSW require waterproofing systems suited to the substrate, exposure and intended use. GMG waterproofs balconies, rooftops, terraces, retaining walls, planter boxes and other exposed areas, with below-ground systems designed to address moisture ingress, hydrostatic pressure and water seepage through walls, slabs and junctions.
Balconies & Terraces
UV-Resistant Roof Waterproofing
Trafficable Coatings
Retaining Walls & Below-Ground Areas
Planter Boxes
Outdoor Ponds & Water Features
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Rising Damp Injection Treatment
Rising damp can damage masonry, finishes and internal wall surfaces. GMG provides rising damp assessment and targeted DPC injection treatment across Central West NSW to address moisture rising through masonry and help protect affected walls from ongoing deterioration.
Rising Damp Diagnosis
DPC Injection
Salt-Affected Wall Treatment
Internal & External Treatment
Moisture Investigation
Targeted Rectification
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Remedial Waterproofing
& Rectification
​We assess the likely cause of waterproofing failure and recommend an appropriate rectification approach for properties across Central West NSW. This may include water seepage, cracks, failed junctions, damaged membranes and other compromised waterproofing systems.
Failed System Assessment
Water Seepage
Assessment & Rectification
Balcony & Wet Area Rectification
Membrane Replacement or Overlay Systems
Manufacturer-Specified Solutions
Licensed, Insured & Compliant Waterproofing
GMG Waterproofing Solutions is licensed and fully insured, providing waterproofing services across Central West NSW. Installations are completed using appropriate system specifications and detailing for the application. Where applicable, waterproofing certification can be provided for work completed by GMG, with installations carried out in accordance with relevant manufacturer requirements, NCC provisions and Australian Standards.​
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Whether the project involves a new wet area, external waterproofing or remedial rectification, our focus is on correct preparation, system selection and installation — not shortcuts.
Why Professional Waterproofing Matters
Reliable waterproofing depends on appropriate system selection, correct substrate preparation and careful detailing at junctions, penetrations and terminations. Professional installation helps reduce the risk of moisture ingress,
premature system failure and costly rectification later.
Proudly servicing Central West NSW and Surrounding Areas
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Areas Covered
Blue Mountains, Lithgow & Central West NSW
Mon-Sat
Licence Number
7:30am-4:30pm
NSW 328089C