Equipment required
Breathaplasta Universal
Clean water and brush or mister
Hawk, trowel and plastering tools
Recommended plaster thickness
Approx. 15-20mm total thickness.
Coverage per 20kg Universal bag
Approx. 5 square metres at 4mm thickness
Setting time per coat
Approximately 45-60 minutes.
Surface preparation
Ensure lath is in good condition and well fastened with drywall screws. The gap between the laths should be around 1/4 of an inch or approx. 6-7mm. Ceilings should have riven (split) lath for improved key, but walls can use sawn lath.
First coat (scratch coat) requires the addition of long-strand, coarse hairs to add strength to the plaster keys.
Mist or wet the wooden laths with water to help control suction.
Recommended plaster application
Mix Universal to approx. 10 litres of clean water per 20kg bag of dry powder used.
Mix the plaster using a paddle mix for approx. 3 minutes.
Apply the scratch coat approx. 8mm from the face of the lath. This should be haired. Force the base coat into the lath, working the plaster into the spaces between the lath to create “keys” that lock the material in place. Use a relatively stiff mix, incorporating long-strand, coarse hairs into the plaster for added strength.
Apply second coat at 6-8mm.
Apply skim finish at 2-3mm. Run a clean trowel over the surface of the plaster for a smooth finish. Use a sponge float for more textured finishes.
Bag calculator
Use this calculator to work out how many bags of Universal to order for your job.
Bags required:
