We stock a select few primers and specialist cleaners from the mastic sealant world's biggest names, Dow Corning Geocel, Fosroc, Otto-Chemie, Mapei and Sika Everbuild. These liquid surface preparations are often critical for promoting correct adhesion and are suited to specific mastic sealants and particular substrate applications. We do stock more primers than the selection that you can see here, however, due to the chemical and flammable nature of these products, we cannot always ship them easily by courier, but you can give us a call on 020 8524 1931 to enquire wether we stock and supply the required primer and/or cleaner that you require, alternatively, simply Contact us via the contact form or Email us and we'd be happy to help with your sealant primer or cleaner enquiry.