Method for coating a support with at least one coat of bonding primer, characterized by the implementation of the following steps: a) a support is implemented, b) optionally, a physical surface treatment of the corona or plasma type is carried out, c) at least one face of said support is coated with an aqueous dispersion comprising: - particles of acrylic and/or methacrylic polymer(s) having: either, on the one hand, a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and, on the other hand, a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, or a gel content of at least 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s), and - at least one cross-linking agent, preferably in aqueous solution, and the coating is made to cross-link in order to produce a primer coat allowing the bonding of a covering, the residual content of free acid functions of the copolymer(s) at the surface being at least 5% by weight relative to the total weight of polymer(s) the proportions of particles/cross-linking agent for the particles of acrylic and/or methacrylic polymer(s) having a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, being 80/20 (weight/weight). a) a support is implemented, b) optionally, a physical surface treatment of the corona or plasma type is carried out, c) at least one face of said support is coated with an aqueous dispersion comprising: - particles of acrylic and/or methacrylic polymer(s) having: either, on the one hand, a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and, on the other hand, a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, or a gel content of at least 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s), and - at least one cross-linking agent, preferably in aqueous solution, and the coating is made to cross-link in order to produce a primer coat allowing the bonding of a covering, the residual content of free acid functions of the copolymer(s) at the surface being at least 5% by weight relative to the total weight of polymer(s) the proportions of particles/cross-linking agent for the particles of acrylic and/or methacrylic polymer(s) having a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, being 80/20 (weight/weight). - particles of acrylic and/or methacrylic polymer(s) having: either, on the one hand, a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and, on the other hand, a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, or a gel content of at least 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s), and either, on the one hand, a gel content below 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s) and, on the other hand, a content of copolymer(s) of acrylic and/or methacrylic acid(s) of at least 10% of the total weight of the polymers, or a gel content of at least 50% by weight relative to the total weight of acrylic and/or methacrylic polymer(s), - at least one cross-linking agent, preferably in aqueous solution,