Caulks

A method of preparing a composite caulk comprising cellulose insulation, perlite, a particulated wood material having a particle size below 2 mm, a particulated fire retardant bark material having at least one axis of length with a dimension below 2 mm and a polyvinyl-acetate based aqueous dispersion adhesive;

• and wherein the composite caulk forms a heterogeneous caulk which can be dispensed using a handheld caulking gun;
• the method comprising dry mixing cellulose insulation, perlite, particulated wood and particulated bark are prior to mixing with said polyvinyl-acetate based aqueous dispersion adhesive;
• wherein optionally at least one fungicide is mixed into said composite caulk with or after addition of said polyvinyl-acetate based aqueous dispersion adhesive;
• wherein optionally, an aqueous modified starch dispersion adhesive and/or an aqueous modified starch dispersion adhesive reinforced with an aqueous acrylic dispersion is added after said polyvinyl-acetate based aqueous dispersion adhesive and wherein said polyvinyl-acetate based aqueous dispersion adhesive alone or with said optional aqueous modified starch adhesives is/are added in an amount sufficient to obtain a heterogeneous caulk which can be dispensed using a handheld caulking gun.