Why Do

We Play With Fire?

The science and skill of torch-on membrane waterproofing.

Torch-on bitumen is a relatively common form of membrane for waterproofing but not an easy installation for the uninitiated.

We look at what’s involved when the torch-on membrane is most suitable and why it is an optimum choice for long-term and effective waterproofing solutions.

What is torch-on membrane?

Torch-on is a flexible membrane containing bitumen and a variety of polymers. It contains asphalt in one of two forms: Styrene Butadiene Styrene (SBS), a rubber modified asphalt, or Atactic Polypropylene Plastic (APP), a plastic modified asphalt.

Torch-on bitumen is heat activated, so applied to the surface using a blow torch. We then add a layer of polymer to enhance structural integrity. Membrane edges are also bonded with heat, giving us the flexibility to cut and shape it to fit any space.

APP is quicker to install but less flexible and hardwearing than the SBS type of torch-on. SBS requires a longer installation process as it takes longer to heat. It is very flexible however and has a very long life span. Both types of torch-on installation are non-toxic and non-carcinogenic.

What are the

Benefits of this type of membrane?

Torch-on membranes are robust and durable, with UV and heat-reflective properties. Additional benefits include guaranteed membrane thickness, double thickness, long-term durability, vapour distribution base sheets and root resistance.

Torch-on membranes are also non-water soluble, suitable for very damp or submerged areas such as basements, tanks, and swimming pools.

At Danrae Group, we frequently recommend torch-on membranes for projects ranging from luxury apartment blocks to watertight planter boxes. And we find they can be a good option for flat roofs, which are more susceptible to storm damage, extreme weather and blockages that impact adequate drainage.

We have the specialists.

At Danrae, we have team members highly skilled in torch-on membrane application. Christian Xuereb is a Remedial Waterproofing Tradesman who has been in construction since he was 14 years old. A master of all trades, his skills include bricklaying, rendering, waterproofing, plastering and one of his favourites, laying torch membrane.

Zach Smith is another of our Remedial Waterproofing Tradesmen, and he gained extensive training and experience with torch-on while living in his native England.

“I do all sorts of waterproofing, but I specialise in torch-on membrane. I learnt everything about it while I was a roofer in England for ten years. You use a blow torch and it’s harder than it looks, plus there’s a lot of detail involved. I’m passionate about torch-on… and about doing every job as you’d like it done in your own home.”

Zach installed torch-on for a Surry Hills luxury apartment block that had been plagued by waterproofing issues for decades. With our extensive in-house expertise, we were able to provide a customised waterproofing solution that also included the installation of a PVC membrane for the rooftop’s tennis court.

You Can Trust Danrae.

At Danrae Group, we provide end-to-end project management and comprehensive leak detection, solution design, waterproofing and remediation from our skilled in-house team of waterproofing contractors and trades professionals.

Our team tailors every solution design to the type and location of the property, we triple test every waterproofing installation, and we provide a full waterproofing guarantee. We also offer preventative maintenance plans to preserve your waterproofing solution and the integrity and value of your property.

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Please feel free to call Danrae Group on 1800 326 723 to discuss your needs.

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