Water ingress is one of the most destructive forces affecting heritage buildings. Moisture accelerates decay in masonry, corrodes embedded metal, and destroys decorative finishes. Unlike modern structures, heritage buildings cannot be treated with standard waterproofing methods — doing so risks trapping moisture, damaging original materials, or altering the building’s historic appearance.

Our heritage waterproofing service provides targeted, reversible, and breathable solutions that respect the building’s original materials and construction techniques. We combine the science of modern waterproofing technology with heritage conservation expertise to create protection systems that stop water but still allow the structure to breathe.

Initial Investigation & Diagnosis

• Moisture Mapping & Tracing – Identifying exact water ingress pathways using thermal imaging, moisture meters, and salt testing.
• Material Analysis – Determining the porosity, strength, and condition of masonry, render, or timber to select compatible waterproofing systems.
• Condition Assessment Reports – Providing photographic and written documentation for heritage authorities, owners, and engineers.

Waterproofing Solutions for Heritage Applications

1. Breathable Surface Treatments
   • Silane/siloxane-based impregnations that penetrate masonry to repel water while allowing vapour escape.
   • Ideal for sandstone, brick, and lime-rendered façades.
2. Discreet Membrane Systems
   • Thin, concealed sheet or liquid-applied membranes beneath new roof sheeting, terrace surfaces, or planter boxes.
   • Fully reversible without damage to original fabric.
3. Specialist Lead & Copper Flashings
   • Traditional materials used to replace or upgrade roof junctions, parapets, and cornice interfaces.
4. Parapet & Cornice Waterproofing
   • Low-visibility cappings and hidden drainage channels to prevent saturation of decorative features.
5. Basement & Subfloor Protection
   • Negative-side waterproofing with mineral-based slurry systems designed for masonry substrates.

Execution Process

1. Surface Preparation – Gentle cleaning and removal of debris or vegetation without abrasive damage.
2. Repair of Defects – Repointing, crack stitching, or render patching to create a sound substrate.
3. Application of Heritage-Safe Products – Selected from a tested range proven to perform without harming heritage materials.
4. Integration with Existing Elements – Ensuring new waterproofing works in harmony with existing drainage, flashing, and ventilation.
5. Final Inspection & Testing – Flood testing, moisture readings, and photographic records for compliance.

Heritage Compliance

• All methods comply with Burra Charter principles and local heritage council guidelines.
• Approvals and method statements prepared for regulatory submission.
• Full traceability of materials and techniques for future conservation work.

Benefits of Specialist Heritage Waterproofing

• Stops Water Ingress without altering the building’s character.
• Extends Lifespan of Materials by preventing moisture-related decay.
• Preserves Decorative Features by protecting vulnerable parapets, mouldings, and cornices.
• Reduces Maintenance Costs through long-term preventative protection.

Why Choose Atomic Projects

• Heritage Expertise – Our trades and project managers are trained in conservation practices.
• Proven Track Record – Delivery of waterproofing works on heritage-listed and state-significant buildings.
• Custom-Tailored Systems – No “off the shelf” approach — every project receives a bespoke solution.
• Integration with Broader Works – Can be delivered alongside façade, roofing, or structural restoration for a complete preservation package.

A heritage building’s greatest threat is water — and our specialist waterproofing ensures it remains protected without compromising its identity.

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If you’re ready to get started, we're ready to help.

Take the next step and let’s build something that lasts.

📞 Call Us: 0410 515 509

✉️ Email Us: hello@atomicprojects.com.au

— Ben Tran, General Manager, Atomic Projects

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