Often asked: How Do You Install Hardiplank Siding?

Often asked: How Do You Install Hardiplank Siding?

Do you need plywood under Hardie board siding?

Fiber cement siding should be installed over plywood, OSB, or sheathing. Be sure that the siding installed is dry. Otherwise, it might shrink at butt joints.

What nails do you use for Hardie siding?

NAIL TYPE: Fasteners must be corrosion resistant, galvanized or stainless steel. Electro-galvanized nails are acceptable for use with James Hardie Siding Products, but may exhibit premature corrosion. James Hardie recommends the use of quality, hot-dipped galvanized nails.

Do you nail or screw Hardie board?

Fasten HardieBacker sheets with proper nails or screws (as listed in ”Materials Required” in the backer installation instructions) every 8” around the perimeter and all supporting studs. Keep fasteners between 3/8” and 3/4” from sheet edges and 2” in from sheet corners.

Can you install Hardie plank directly to studs?

HardiePlank ® lap siding can be installed over braced wood or steel studs spaced a maximum of 24″ o.c. or directly to minimum 7/16″ thick OSB sheathing. See General Fastening Requirements.

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Do I need house wrap behind Hardie siding?

With fiber cement siding, the heavy material may compress the wrap so it’s extremely important that a non-woven wrap is used. This is because the heavy siding may lead to a build-up of moisture behind it, which in turn, can lead to mold growth and wood rot if that moisture is not properly addressed.

How long can Hardie board go unpainted?

Pre-primed products can sit for 6 months without paint. Unprimed hardie can sit for 3 months without paint.

Can I use a finish nailer on Hardie siding?

You can hand nail the trim with stainless steel siding nails. No problem nailing thru the Hardie Board. If the nails won’t show then a roofing nailer will work too.

Can you use roofing nails for Hardie siding?

You can shoot Hardie siding on with air powered nailers or use hand driven roofing nails to attach siding to the home or structure. The nails can be ringed- shanked or smooth just make sure you are hitting the studs in the wall.

Can I install Hardie siding myself?

Fiberboard cement siding can be hand-nailed, but because it’s so much harder and more brittle than wood, you have to predrill holes near any edge. You can save yourself a bunch of time by using a pneumatic coil siding nail gun.

Can you use screws to install Hardie plank siding?

HardiePlank ® lap siding may be used with fasteners approved by ICC-ES ESR-2290 spaced in accordance with the Wind Load Tables. Fasteners must be corrosion resistant, galvanized or stainless steel.

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Does Hardie board crack?

Because Hardie siding is so stiff any movement of the house can cause cracks in the siding which are typical of any rigid masonry product.

Does Hardie board need to be painted?

What is Hardie Plank? Hardie Plank is a newer composite material made of concrete substrate. Hardie Plank is also called fiber cement siding. While it’s far heavier than aluminum, vinyl or wood, it is extremely durable and typically only needs a new paint every ten to twenty years for maintenance.

How much do you overlap Hardie siding?

Fiber cement siding should be installed 6” or more above the grade level of the house with a 1”– 2” gap between horizontal surfaces like decks, steps, or adjacent roofs. Flash above doors and windows, leaving a ¼” gap between the flashing and siding.


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