This special multi-surface Aquaproof Primer carries the CE mark and has been rigorously tested to guarantee its suitability for priming all absorbent substrates.This special multi-surface wet room waterproofing Aquaproof primer is for use on all absorbant surfaces prior to applying the Aquaproof wet room compound. A solvent free, highly absorbable primer for porous surfaces, including plaster, plaster board, wood, screed and concrete. Supplied in a 2 litre container which will cover up to 12 square metres. as with all the Aquaproof Products, Aquaproof Primer has been independently tested and is CE Approved. Full instructions supplied with the product and a pictorial description of application is viewable on our How to Tank a Wetroom Article. To find out the amount of waterproofing/tanking materials you require to tank your wet room please refer to our Wetroom Waterproofing Material Calculations Guide which will open in a new tab.