Waterproof Your Home Before It's Too Late

Most people don’t give waterproofing a second thought — until their ceiling starts sagging, their bathroom tiles pop, and mould takes over.

But here’s the truth: if your waterproofing fails, you could be facing tens of thousands in repairs — gutting bathrooms, ripping up balconies, or starting over in a space you just finished. Even worse, insurance often won’t cover it if the workmanship wasn’t compliant.

A waterproof home isn’t a nice-to-have. It’s non-negotiable. And at EDM Building, we make sure you get it right the first time.

Anatomy of a waterproof home: Proper membrane placement and sealing at every junction is critical to prevent water damage in wet areas like bathrooms and laundries.

Why So Many Homes Aren’t Properly Waterproofed

Most building failures come down to poor waterproofing. Here’s where things usually go wrong:

Surface isn’t prepped properly:

• If the base isn’t dry, clean, and primed, the membrane won’t stick — setting you up for long-term damage.

Wrong product for the job

• A balcony needs a different membrane than a bathroom. Too many tradies just use what’s in the ute.

Mixing incompatible products

• Using different brands without checking compatibility voids warranties and weakens your waterproof barrier.

Poor technique

• Membranes must be applied at exact thicknesses. Too thin, and water will find its way through.

Other trades damage the system

• One misplaced tile or screw from another tradie can break your waterproof seal — and no one notices until years later.

Cross-section of a compliant waterproof home detail: Membranes, bond-breakers, and correct floor build-up work together to prevent leaks in wet areas like showers and bathrooms.

How EDM Building Delivers a Truly Waterproof Home

We treat waterproofing like a system — not a slap-on layer. We do this through:

• Thorough surface prep to manufacturer standards

• Full compatibility checks between primers, membranes, and sealants

• Correct membrane type for each space

• Precise application to Wet and Dry Film Thickness specs

• Clear handover and instructions to all trades that follow

  
  

It’s all part of our promise to deliver high-quality, stress-free construction — and a home that stays protected for years to come.

Act Now to Waterproof Your Home

You only get one chance to do it right. And by the time you realise it’s wrong, it’s already too late.

If you’re renovating or building in the Illawarra, now’s the time to make sure your home is properly waterproofed. Whether it’s a custom coastal build or an ensuite upgrade, don’t leave this critical step to chance.

Get in touch with EDM Building today to talk about waterproofing your home — before the damage starts.