How To Use Hardi Plank To Seal The Bottom Of An External Wall?

Hardie board siding installation involves screwing and flashing the siding to protect the home’s crevices. Trim or caulk should be applied around the house in the ¼ inch gap at the end of the wall and board panels. The siding should be face nailed at the bottom and blind nailed at the top, using siding nails for face nailing and roofing nails for blind nailing. James Hardie recommends using the blind nailing technique for HardiePlank® lap siding.

Installing trim boards around windows, doors, corners, and along the bottom of the wall is crucial before starting with the siding panels. Flashing is recommended for proper sealing. Edmonton siding contractors make common mistakes when installing James Hardie fiber cement siding and trim, including butt joints and flashing. To avoid touch-ups, caulk the siding properly and use alternatives like flashing or metal trim.

If needed, fix a waterproof membrane to the outer face of the structural wall, laid along the wall with an overlap between the layers of membrane of at least 150mm. Fix common damages like peeling paint and broken boards on hardie plank siding, a traditional style of exterior wall cladding. James Hardie recommends using caulks and sealants that remain permanently flexible.

Hardie™ Plank Weatherboard cladding must use suitable bulk insulation to meet the minimum specifications. Stagger the butt joints in an area of the wall over two or more batten lines, avoiding joints located directly in the same vertical line. Caulks and sealants should be used that remain permanently flexible.

Install plywood or OSB across the entire exterior cavity, nail it in place against the studs and framing, and install the moisture barrier. Optionally, install lap siding with a maximum 1/8″ gap and caulk the joint. The first course of any wall should be installed over a concrete slab.