Abstract: A room temperature curable resin composition comprising a copolymer of (A) with (B) shown below:(A) An acrylic group-containing silane compound represented by the following Formula (I): ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon group; R.sub.2 represents an alkylene group having not less than 2 carbon atoms; R.sup.3 and R.sup.4 each represent a hydrogen atom or a methyl group; m represents 0, 1 or 2; and n represents an integer of not less than 1.(B) A compound having an unsaturated group copolymerizable with said component (A) acrylic group-containing silane compound. This composition can be cured at an accelerated rate not only at the surface but also at the depths thereof, and may crack with difficulty after cured.