Masons Offer Comprehensive Plaster Cladding Systems

"Plaster cladding systems are alive and well in New Zealand, and at the moment are taking back ground in the Auckland region," says Trent Mason, Director of Masons (Plastabrick Ltd). "We are seeing plaster being an extremely popular product of choice in lots of other parts of the country."

The future lies with having a complete system that works together and upholds a strong warranty. Masons are the only company in NZ that can supply that full system:

Stage 1: Last line of defence preventing the moisture from penetrating the frame: Masons building wraps, window tapes and DPC.
Stage 2: Plaster panel substrates, including a complete range of flashings and beads that comply to E2/VM1 standards for moisture control.
Stage 3: Comprehensive plaster systems all the way out to paint.

"Currently we supply three kinds of substrates for exterior plaster cladding: XRV (Poly Panel), Enviro (AAC Panel) and ThermalCrete (Composite Panel). We describe them as good, better and best. And they all have their place in the market," says Trent. "All are 50mm thick panels installed over a 20 — 45mm cavity system and come with our comprehensive flashing system."

"The key with plaster is to have a substrate that is stable and secure, and doesn't crumble under moisture pressure. ThermalCrete is a composite panel that owns all these qualities. With its interlocking panel it gives extra stability to the wall," he adds.

"The absence of steel rods from ThermalCrete makes it easier to install and eliminates the potential hazard of rust corrosion taking away the strengths of the panel. This is a very real factor, particularly in sea spray zones, considering that AAC has a 24-35% absorption factor. Thermalcrete only has a 3-6% moisture absorption rate, dramatically aiding in the reduction of water entering the cavity. For these reasons we see the industry moving to this composite type of panel."

"We also experience the transition from cementitious plaster to our FLX Acrylic plaster," says Trent. He adds that the industry now "sees the benefits of having a flexible water-resistant plaster. The product goes a long way and holds the future for plastering. FLX upholds a 20 year warranty."

FLX - Flexible Plaster Cladding System

Masons

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FLX is a highly flexible waterproof acrylic plaster membrane, which is applied over substrates to provide a crack resistant coating.

NZ Made

NZ-Owned Business

The substrate may require you to apply levelling coat of plaster first (refer to Masons Data Sheets on the correct plaster for the substrate).
Apply Masons Plastaseal Sealer over the first coat of plaster, this will stop the suction between FLX bedding render and the first coat of plaster, hence giving you more working time with the product on the wall.
Apply 3-4mm of FLX over the surface with Masons Fibreglass Mesh embedded into the wet plaster. Overlap each successive length be 50mm minimum.
To opening reveals mesh over the PVC flashings. Apply diagonal reinforcing strips to the corners of windows, doors and exterior openings.
Cure and protect from rapid drying in accordance with Masons requirements.
Apply 2 coats of Masons Premium Build High Build Acrylic Paint over the textured finish (if pre-coloured texture has been used then only 1 coat of paint is required). Darker colours heat up in the sun and can cause problems with expansion and contraction of the surface and for this reason the paint colour is restricted to a depth of 25% LRV or more for guarantee purposes.