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Deleted member 15
Mudster said:Technically an SBR primer is for slurry priming concrete floors and sealing the edges and back of wood substrates before tiling.
For priming gypsum plaster walls or plasterboard you should be using an APD primer. (Read BAL's techinicaly literature for a chemical explanation on why this is).
Technically an sbr is a modified acrylic polymer dispersion bonding agent, the very same polymers used in apd. Sbr has several uses. as a bonding slurry as u mentioned and adding in to sand cement renders and screeds and when watered down it can be used as a primer.