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Prime IT Multi-surface primer (MSP) is a moisture tolerant, water based acrylic primer, sealer and bonding aid, suitable for porous and non porous substrates.
Prime IT MSP can stabilise and consolidate the substrate surface and reduce the absorbency enabling subsequent materials to flow, cure and bond successfully. It is recommended for use between layers of smoothing underlayments when multi layer applications are being carried out to minimise pinholes and maximise interlayer adhesion.