Can you paint over Blueboard?
Similarly, how do you render over a Blueboard?
Apply a small amount of render to the inside of the beading, press it firmly to the corner and clean off the excess render that is squeezed out. Only mix one bag of Render It™ at a time. Add 4 litres of clean water to a wheelbarrow and slowly pour one bag of render into the water.
Similarly, is Blue Board water resistant?
Blueboards are somewhat water-resistant but not waterproof, and preferably should not be used for wet or damp applications. In fact, blueboards should only be used as an underlayment for veneer coat plastering, which is what the blue-colored paper is designed for.
Acrylic render is designed to be applied to most surfaces such as painted masonry, uneven concrete, brick, fibre cement and plasterboard. Acrylic render can be tinted to the colour you are going to paint your wall allowing for one less coat of paint.