Tetrion Primer Bonder 1L 4 in 1. Primes, Bonds, Seals and Protects Key Features: Bonds powdery, friable walls Fast drying Easy to apply and use- no tools necessary Solvent free Product details: Tetrion Make Good PrimerBonder- 4 in 1. Primes, Bonds, Seals and Protects. Bonds powdery, friable walls Stabilises poor surfaces Preparation before painting, decorating, sealing, tiling, grouting or filling Tetrion Make Good PrimerBonder uses new technology to prime, bond, seal keycoat and protect. PrimerBonder is the go to product you should use prior to any decoration or filling as it can make the difference between a DIY-job and a professional finish! Easy to apply and use- no tools necessary Fast drying Low odour Solvent-free Use to treat gypsum walls, plaster, chipboard, cement fibre board, formed concrete, render etc., prior to painting and for sealing brick, stucco and concrete. Helps bind and seal powdery, chalky surfaces. Use as a dust-proofer on concrete floors etc. As a Primer it can be used to treat dusty gypsum surfaces, un-bound, unpainted walls, cement based fibre-boards, formed concrete, render, mortar, bricks, stucco and other masonry and porous surfaces to seal, prior to painting or other decoration. Loose and porous surfaces can lead to poor adhesion of other surface treatments such as paint or wallpaper. As a Key Coat & Sealer Used as a key coat for new plaster, fillers, mortar & concrete repairs, renders and screeds. Can be used to seal and dustproof cementitious or plaster/powdery substrates. As a bonding aid Used to help bond new plaster/fillers to old or for ceramic tiles onto painted surfaces. Also use as a bonding aid for porous or rough surfaces, helping to bond paving, quarry tiles, slate and ceramic tiles