Balcony Waterproof Sealing & Membrane Repair
Applied dual-layer polyurethane waterproof membrane to leaking tiled balcony floor with reinforced corner flashing seals.
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Specialist liquid and PVC sheet membrane applications. From Class 3 internal wet areas to Class 4 external balconies and planter boxes. Compare live 2026 bidding for certified protection.
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Rapid diagnostic service including electronic moisture meter testing, thermal imaging camera scoping, and immediate mitigation report for strata managers.
Complete strip-out of failed tiles and waterproofing, screed re-fall correction, application of Class III compliant torch-on or liquid membrane system.
Routing, backing rod insertion, and high-movement polyurethane / silicone hybrid joint sealant injection for dynamic building movement joints.
Multi-coat reinforced polyurethane liquid membrane applied to flat roofs, podium decks, and wet areas with 400% elongation elasticity.
Crystalline and polymer-modified cementitious tanking slurry applied to retaining walls and basement slabs to withstand negative hydrostatic water pressure.
Heavy-duty APP/SBS modified torch-applied mineral cap sheet membrane with slate chip UV protection for commercial and strata flat roofs.
Advanced pressure injection of expansive hydrophobic polyurethane resins behind concrete block or diaphragm walls to seal subterranean water ingress.
Rust treatment, joint sealing, and heavy elastomeric liner installation inside commercial or strata roof box gutters to prevent internal overflows.
AS3740 compliant wet area waterproofing including floor wastes, hob angles, wall joints, and class-3 liquid membrane with bond breaker tape.
Heavy-duty bitumen/polyurethane tanking with chemical root-inhibitor additive, protection board, and drainage cell installation for strata planters.
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Flexible liquid coating applied directly to prevent water leaks on flat surfaces.
Strong rolled sheet layers welded together for extra thick water protection.
*This offer is currently available through our email marketing. Promotional rates exclude difficult site access or non-standard materials and are subject to final inspection.
2 featured major projects and 5 recent builds with costs, locations, and reviews.
Applied dual-layer polyurethane waterproof membrane to leaking tiled balcony floor with reinforced corner flashing seals.
Prepped substrate surface, ground expansion joints, and coated large outdoor concrete deck with heavy-duty elastic waterproofing.
High-pressure chemical resin injection into deep concrete basement wall cracks to stop rising damp and active water ingress.
Sealed brick retaining wall with crystalline tanking slurry membrane to prevent moisture seepage into garden rooms.
Torch-on bitumen sheet waterproofing membrane application across exposed flat concrete roof deck for weatherproofing.
Lined brick garden planter box with root-resistant sheet membrane and installed subterranean drainage protection sheet.
Coated underground carpark floor slab with moisture-barrier epoxy coating to prevent rising water vapour damage.
Applied heavy-duty hydro-active sealer around internal plumbing floor penetrations and perimeter edge joints.
Complete commercial-grade balcony waterproofing rejuvenation system. High-performance polyurethane membrane application over existing tiles or exposed concrete substrate across 80m² with full perimeter band sealing.
DBP-compliant structural waterproofing remediation for rooftop slabs, retaining basement walls, and negative-side groundwater leaks. Designed for multi-residential and commercial assets requiring declared designs.
Quick Note Listed prices show finished builds. Final costs depend on site access.
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LIC: Builder 283896C • ABN 34 160 847 736
Surface prep, primer & polyurethane membrane.
Board upgrade, structural bonding & membrane.
| Compliance & Site Access Item | Cost / Rate | Selection |
|---|---|---|
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A - Class-2 Strata Project (DBP Act Design Practitioner Details Required) Mandatory compliance consultation, lodgement and design practitioner coordination. |
$950.00 MANDATORY |
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B - Scaffold & Access (Recommended protecting internal area) Level 2 External scaffolding setup, safety netting and protection for level 2 access. |
$2,850.00 WEEKLY RATE |
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| Demolition Task & Specification | Rate | Area / Qty |
|---|---|---|
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Full Tile Removal & Surface Prep Ready for Waterproofing Complete tile lifting, adhesive grinding, and substrate cleaning. |
$42.00 PER M² |
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Full Yellow Tongue Timber Board Removal & Replacement with New Concrete Board Upgrade Demolition of rotten timber and installation of structural concrete sheet flooring. |
$115.00 PER M² |
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| Tiling Task & Specification | Rate | Area / Qty |
|---|---|---|
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300x300mm New Tile Screeding & Tile Finish (Installation cost only) Sand-cement fall screeding and professional tile installation (labor only). |
$95.00 PER M² |
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600x600mm New Tile Screeding & Tile Finish (Installation cost only) Specify format preference for layout alignment and setting. Select 1 unit for 300x300mm or 600x600mm. |
$120.00 FORMAT SPEC |
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Estimated Total Investment
You contract directly with the trade business (Build-Surety is not a party). Plus, never share ID or payments online—we will never ask.
Clear, honest answers for builders, strata, and property owners.
Professional answers regarding pre-contract terms, site access constraints, and how we professionally handle difficult words or site disputes.
We review total job scope, membrane specifications, fixed pricing, payment stages, and exact project timelines so everything is clear upfront.
We coordinate access hours with owners and strata, lay protective floor coverings, and keep walkways clear and safe every day.
We respond calmly and professionally, listen directly to concerns, and refer to documented engineering plans to resolve issues fairly.
You receive concise, regular photo and message updates so you always know what stage of waterproofing or curing is underway.
We choose Class III high-extensibility liquid or sheet membranes specifically rated for balconies, planters, rooftops, or wet areas.
We perform mandatory flood testing or electronic leak detection to confirm a watertight seal prior to laying screed or tiles.
We stop, document the issue with photos, present clear repair options, and obtain written approval before doing any additional work.
Our team adheres to strict noise controls, non-smoking policies on site, polite communication, and daily rubbish cleanup.
Yes. Upon completion, we issue a formal Certificate of Compliance (AS 3740 / AS 4654) backed by statutory warranty guarantees.
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0433 379 576