together u201d has a direct effect on the degree to which the conditioner and adhesive penetrates the two surfaces this adhesive coalesces by releasing water into the porous structure of the material and thereby evaporates the greater the three dimensional texture and porosity of a material the greater the surface area for adhesion and the more pores the adhesive can penetrate wood pottery and ceramic tiles are excellent examples of porous surfaces where the adhesive is able to form a deep penetrating purchase in particular embodiments at least one of the materials to be bonded is porous for example as smooth as glass tiles are they can be bonded to a porous material in stage 4 shown in fig8 the plaster 12 is temporarily clamped into soft contact with the laths via screws inserted through 2 inch plastic washers 34 and then through the ports 14 in the plaster 12 and then to the laths into which they are screwed e g with a hand or power screwdriver 36 the screws 32 are tightened until the plaster is drawn to a distance from the laths within the tolerance of the thickened acrylic emulsion adhesive composition 18 as much as 3 16 inch preferably 1 32 to 1 16 inch to adhere to and penetrate into both surfaces as previously noted stage 4 can be performed either before or after injection of the conditioner composition and injection of the adhesive composition into the gap between the plaster and the laths finally exposed surfaces can be cleaned with warm water and a soft sponge 38 as shown in fig9 the adhesive is allowed to cure for a minimum of 24 hours the washers or braces are then removed dried adhesive can.