Abstract: A caulking tool is formed of a flat plate with first and second major surfaces and an edge surface. The tool has a rectangular section with two rounded corners, an intermediate section abutting the rectangular section, and first and second projections extending from the intermediate section. The first projection tapers to a straight tip and the second projection tapers in a curved manner to another tip that points at substantially a right angle away from the straight tip. At both projections, edges of the second surface extend beyond edges of the first major surface with the edge surface convex from the edge of the first major surface to the edge of the second major surface.

Abstract: An adaptor for a caulking tube nozzle, the adaptor including a reducing coupling having a large end secured to the caulking tube nozzle and a small end which is threaded, and a cap having threads for engagement with the threads of the small end of the coupling to thereby cap and seal caulking material within the coupling when the caulking tube is not in use. In one form the large end of the reducing coupling is internally threaded for self-tapping engagement with the caulking tube nozzle, and the small end is externally threaded for engagement with internal threads in the cap. In another form, the large end of the coupling is formed integrally with the end of the caulking tube.