Caulking Hardieplank Siding

This from installation instructions.

Caulking hardieplank siding.

Hardieplank lap siding is not just our best selling product it s the most popular brand of siding in america. For regular hardiplank lap siding the kind you paint after installation caulking at butt joints is optional. You have to consider the amount of siding you ll need how long it will take and any additional fees for equipment and materials. Joe i think your image is specifically for colorplus where they don t recommend caulking.

A high quality paintable caulk is recommended. Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur. Osi quad product brochure. Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed.

Hardiplank and other brands of cement siding are among the most durable of all siding materials. Wherever hardie siding meets a trim board the company recommends you leave a 1 8 gap between the siding and the trim and apply a 3 8 bead of approved caulking to protect and seal the edge of the siding. When james hardie siding products butt into wood based materials a 1 8 gap will allow for expansion and contraction of the wood based product. Typically made of a high density combination of cellulose fiber cement and sand fiber cement siding is tough termite resistant water resistant and non combustible.

The nails holding up the siding should not be caulked. Osi quad caulk for exterior door window and siding applications color matched to james hardie colors uv water resistant will not crack or yellow 1 tube covers 29 lineal feet at 1 4 bead width or 13 lineal feet at a 3 8 bead width paintable. Because almost all of the james hardie product installed in edmonton is prefinished colorplus siding the caulking will.