Test patches are strongly recommended to ensure a good long lasting bond of plaster to masonry concrete substrates.
Plaster thickness on concrete wall.
12 mm thick cement plaster is done where the plain surface of brick masonry is plastered.
If you want a flat wall smooth the plaster out.
Leave it rough if you prefer a textured look.
15 mm cement plaster is required on the rough side of 9 and 4 5 wall.
The open texture promotes a good mechanical bond between the plaster and the masonry.
New concrete masonry walls should be properly aligned and free from any surface contamination such as mortar droppings or sand.
Always use plaster and bonding products in strict accordance with manufacturer s recommendations.
If you want to apply a single coat of plaster make sure it is no thicker than 10 to 15 mm.
When relying on a bonding agent gypsum plaster should be applied to no more than a maximum thickness of 1 2inch.
Open textured concrete masonry units laid with flush non tooled joints should be specified on walls intended to be plastered.
The thickness of the undercoat used in conjunction with thistle bond it or other bonding agents should not exceed 11mm for walls and 8mm for soffits.
The thickness of the finish coat applied over the undercoat should be 2mm.
Check out our recommended tools right here.
Remember the thickness of the top coat should be 5 to 10mm.
20 mm thick.