Primers are used to ensure good adhesion between our user-castable range of acoustic materials once the substrate surface has properly prepared. After roughening the surface and thorough cleaning of the surface the use of the correct AptBond Primer will ensure that the acoustic materials will remain attached to the substrate despite extended immersion in water.

The primer can be diluted to 35% for spraying or approx 70% for brush or roller applications. Solvents used for dilution must be free of any water content and we would recommend Bostik M501.

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