Hobart Shower Waterproofing Specialists | Leak-Free Guarantee
That musty smell in your bathroom? Black mould creeping up the shower corners that won’t scrub away? Last month, we removed a 1985 shower in West Hobart, where water had quietly seeped into the timber frame for years. The homeowner had no idea until the ceiling below began to sag. The repair bill? Over $8,000 in structural damage that proper shower waterproofing would have prevented.
We provide professional shower waterproofing services across Hobart, delivering AS3740-compliant installations that protect your home from leaks and moisture damage. Our licensed specialists service West Hobart, Sandy Bay, Glenorchy, Lenah Valley, Kingston, Lindisfarne, and surrounding suburbs.
From membrane installation to flood testing and certification, we deliver leak-free showers backed by comprehensive warranties. In Tasmania’s humid climate, cutting corners on shower waterproofing is expensive.
What is shower waterproofing?
Shower waterproofing is the process of applying a protective membrane barrier to shower walls and floors before tiling to prevent water from penetrating the underlying structure. This step protects your Hobart home from water damage, mould growth, and timber rot.
Key shower waterproofing components include:
- Liquid or sheet membrane application to the shower base and walls
- Minimum 1800mm height coverage in the shower area (AS3740 requirement)
- Reinforced sealing of internal corners with membrane tape
- Watertight seals around floor wastes, taps, and penetrations
- Multiple membrane coats for adequate thickness and protection
- Compliance certification meeting Australian Standard AS3740
Professional shower waterproofing creates a seamless, leak-proof barrier that directs all water to the drain, protecting your home’s structure and preventing costly repairs from moisture damage in Tasmania’s humid climate.
CALL US AT (03) 6152 6136 OR
GET A FREE QUOTE TODAY
Comprehensive Shower Waterproofing Installation in Hobart
We handle every aspect of shower waterproofing to protect your Hobart home from water damage.
Complete Shower Base Waterproofing with Proper Drainage
We create the right drainage falls—typically 1:100 gradient—so water flows directly to the waste without pooling. Multiple membrane coats build adequate thickness, with proper drying time between applications, preventing early failure.
Wall Waterproofing to AS3740 Height Requirements
AS3740 requires a membrane extending 1800mm minimum in the shower zone, with 150mm above the shower rose elsewhere. Our wall application covers required heights and extends around corners properly, creating continuous protection against water splashes and steam.
Internal Corner Reinforcement and Membrane Tape Application
We reinforce every internal corner with membrane tape before final coats. This tape bridges wall junctions and floor-to-wall transitions, preventing membrane splitting from temperature changes and building settlement at these critical stress points.
Floor Waste Sealing and Graded Collar Installation
The floor waste gets a graded collar that integrates with the membrane system. We bond the membrane directly to the waste flange, overlap with the collar, and build up multiple coats. Taps and penetrations receive identical sealing treatment.
Shower Waterproofing Applications for Hobart Homes
We waterproof all shower types across Hobart, from brand-new installations to emergency leak repairs in failing systems.
New Shower Construction and Renovation Waterproofing
Fresh construction and complete renovations both need proper waterproofing before any tiles go down. We apply membrane systems to clean, prepared surfaces, creating the foundation for leak-free showers that last for decades.
Walk-In Shower and Accessible Shower Waterproofing
Step-free walk-in showers need careful waterproofing at the transition point. We create seamless barriers across threshold areas, ensuring water stays contained while maintaining level access for mobility needs.
Remedial Waterproofing for Failed and Leaking Showers
Existing showers showing leak signs need complete re-waterproofing. We strip back to structure, address any water damage, then install fresh membrane systems with proper AS3740 compliance and flood testing.
Over-Bath Shower Area Waterproofing Solutions
Shower-over-bath setups still need full waterproofing in the wet zone. We membrane the bath surround walls to the required heights, seal penetrations properly, and protect your Hobart home’s structure from moisture damage.
Hobart Climate Considerations for Shower Waterproofing
Tasmania’s humid conditions make proper shower waterproofing even more critical for protecting your home’s structure.
Managing Moisture in Tasmania’s Humid Climate: Hobart’s humidity means bathrooms stay damp longer after showers. Quality waterproofing works with adequate ventilation to prevent moisture from penetrating walls and creating mould growth behind tiles where you can’t see it.
Protecting Timber Frames in Older Hobart Homes: Weatherboard homes built between 1960 and 1990 have timber frames, particularly vulnerable to water damage. Failed waterproofing lets moisture soak into studs and floor joists, causing rot that compromises your home’s structural integrity.
Membrane Selection for Local Conditions: We select membrane systems suited to Tasmania’s conditions—products that handle humidity, temperature fluctuations, and maintain flexibility. Cheap membranes become brittle or don’t bond properly in our climate, leading to premature failure.
Preventing Mould Growth Through Proper Waterproofing: Proper waterproofing stops water from getting behind tiles, where mould thrives unseen. Combined with correct drainage, ventilation, and our installations, keep moisture controlled and prevent the health issues mould creates in Hobart homes.
AS3740 Compliance and Shower Waterproofing Certification
Compliance certification protects your investment and ensures your shower waterproofing meets Australian Standards required by councils and insurers.
Understanding AS3740 Waterproofing Standards
AS3740 sets minimum requirements for waterproofing wet areas, including membrane coverage heights, penetration sealing, and testing procedures. These standards exist because water damage from failed waterproofing costs Australian homeowners millions annually in repairs.
Compliance Certification for Council and Insurance
Hobart council requires AS3740 compliance certification for bathroom renovations. Your insurer may reject water damage claims if the waterproofing wasn't certified compliant. We provide full documentation proving your installation meets required standards.
Flood Testing and Quality Assurance
We flood test every shower installation before tiling begins. Water sits in the shower base for 24 hours while we check for any moisture penetration. This catches problems before tiles go down, not after.
Licensed Waterproofing Installer Requirements
Only licensed waterproofing installers can legally certify AS3740 compliance in Tasmania. Our team holds current waterproofing licenses and undertakes regular training on updated standards, materials, and installation techniques for proper certification authority.
Ready to Protect Your Hobart Home from Shower Leaks?
Don’t wait until water damage costs you thousands in structural repairs. Our licensed waterproofing specialists deliver AS3740-compliant installations that protect your home from day one.
Get Your Free Shower Waterproofing Quote Today
We service West Hobart, Sandy Bay, Glenorchy, Lenah Valley, Kingston, Lindisfarne, and surrounding Hobart suburbs with professional waterproofing installations backed by comprehensive warranties.
Call Now: 0361526136
Or contact us at info@hobartbathroomrenos.com for expert advice on your shower waterproofing needs.
Frequently Asked Questions About Shower Waterproofing in Hobart
Shower waterproofing typically costs between $800-$1,500 depending on your shower size and configuration. Walk-in showers or custom shapes cost more due to additional membrane work. We provide fixed quotes upfront so you know exactly what you’re paying.
No, you can’t tile over old waterproofing that’s already tiled. We need to strip everything back to the substrate, inspect for damage, then apply fresh waterproofing membrane before new tiles go down. Tiling over failed waterproofing just hides the problem temporarily.
Waterproofing takes 2-3 days from start to finish. We apply multiple membrane coats with drying time between each application, then conduct a 24-hour flood test before certifying the installation. Rushing this process compromises the waterproofing quality.
Yes, Hobart City Council requires AS3740 compliance certification for bathroom renovations. We provide this certification upon completion. Without it, your renovation doesn’t meet building standards, and your insurance may not cover future water damage claims.
Common signs include water stains on ceilings below the bathroom, musty smells, mould growth in corners, loose tiles, or dampness in adjacent rooms. If you notice any of these, get the waterproofing inspected before structural damage worsens.
We can, but it’s not recommended. Water splashes up walls, steam rises, and moisture finds any gap in protection. AS3740 requires wall waterproofing to specific heights for good reason—floor-only waterproofing will eventually leak and cause damage.
