With an SD breathability value similar to limewash, you can breathe easy knowing your walls are breathing easily too -There’s no plastic in our paint. Air and water vapour can easily escape because the pores of the walls are not sealed Unlike standard masonry paints, Emperor Masonry Paint penetrates and bonds to the wall and maintains the walls open-pore structure -No longer must you choose between a paint that performs or breathes – Emperor Masonry Paint gives you the protection you want from a paint with the breathability you need