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Hardie™ Weather Barrier is installed over the sheathing—beneath the exterior siding—to reduce water and air infiltration. I’ve been using Hardie siding in the Texas heat for over 10 years. The homes I built then still look brand new today.
What do you put behind Hardie board?
Joint flashing: James Hardie recommends that a slip sheet (joint flashing) is installed behind each butt joint in the siding. This is a 6” wide piece of weather resistive material to make sure that no water gets through.
Do you need plywood behind Hardie board?
Fiber cement siding should be installed over plywood, OSB, or sheathing. Building codes will usually require installing siding over water-resistant barriers and nailed into the studs every 16 or 24 inches.
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.
Can you install Hardie siding 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.
Do you caulk Hardie board siding?
James Hardie DOES NOT recommend using caulk or “H”-jointers for the butt joints of HardiePlank® siding with ColorPlus® technology. James Hardie also DOES NOT recommend applying caulk to the horizontal overlap between siding planks (see Figure 2).
Does Hardie board need a vapor barrier?
Depending on your local building authority having jurisdiction (the AHJ) over your building codes, vapor barriers are almost always required, whether your builder uses James Hardie products or some other, inferior product.
What do you put behind fiber cement siding?
Fiber cement siding can be nailed by hand or with a pneumatic nailer. It can also be attached using corrosion resistant screws. Use hot-dipped galvanized or stainless steel nails. Nails should penetrate through the sheathing and at least 1” into studs.
Do you need insulation under Hardie siding?
Hardie Plank is a cement board; it’s composition is sand and water. It is heavy on the wall and provides no insulation value. Formed to resemble wood, it fails to provide a deep, rich grain and does not come close to the look of wood. It is highly susceptible to mold and mildew.
Do you have to paint both sides of Hardie board?
All sides of the Hardie Board are painted (even the edges) and therefore the entire board is completely sealed. (Although Hardie Board comes from the factory without the back of the board primed, according to James Hardie’s support department, they say you can prime and paint the entire board.)Nov 11, 2016.
Can you use tar paper under Hardie board siding?
Tar paper was used under old fiber cement siding, traditional wood siding and stucco. You need to use it under your new fiber cement siding at the very least. A better alternative is to use a moisture and air infiltration barrier. If you choose to use tar paper, remember that you work from the bottom up.
What is under Hardie board siding?
Hardie™ Weather Barrier is installed over the sheathing—beneath the exterior siding—to reduce water and air infiltration. I’ve been using Hardie siding in the Texas heat for over 10 years.
Do you nail or screw Hardie board?
What is the correct fastener pattern for installing HardieBacker® cement 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.
Can you use a nail gun on hardiplank?
Overall, only two types of power nailers work best for attaching hardie siding: siding and roofing nailers. But if you must use a framing nailer, to install any James Hardie product, be sure to fit it with a quality flush mount attachment so as to control the depth the fastener is driven.
Can you nail through Hardie board?
Hardiplank siding can be hand nailed or fastened with the use of a pneumatic tool. Set your air pressure so that the fastener is driven snug with the siding surface.
How do you fill nail holes in Hardie board?
ColorPlus® Products ColorPlus® Touch-up Kits can be used to cover nicks, scrapes and nail holes that may occur over time. If the touch up area is larger than the size of a dime, the use of ColorPlus® Touch-up Kit is NOT recommended. It is advised to replace the damage siding with a new section of ColorPlus® siding.
How do you fasten Hardie board?
Fasten the siding – You can fasten it with a pneumatic nailer or nailing by hand. You can use corrosion-resistant screws, or you can use stainless steel or hot-dipped galvanized nails. You can nail the siding by either blind nailing it at the top or face nailing it at the bottom.
Can you pressure wash hardiplank?
The manufacturer recommends that you do not pressure wash your Hardie siding. The hard spray of water from the power washer can damage the surface of the siding.
Do I need plastic behind Hardie board?
plastic behind cement board with waterproofing is essentially suspenders when you already have a belt. the waterproofing is also a vapor retarder so if the red guard or kerdi product is continuous, lapping corners and all, the plastic will be unnecessary.
Do you have to waterproof Hardie board?
Hardiebacker (James Hardie): the use of a waterproof membrane, vapor barrier or vapor. retarding membrane is optional unless the local building code requires it.
Is fiber cement siding the same as Hardie board?
Fiber cement siding is often called “hardiplank” or even “hardie board” named from the most popular brand of fiber cement siding which is manufactured by James Hardie. It is also installed in much the same way as traditional lapboard or wood siding, as it is nailed directly to your home.
Do you need plywood under cement board?
The Surface Below the Cement Board Flooring: For ceramic tile floors, the cement board usually rests on a plywood subfloor (minimum 5/8-inch-thick exterior-grade plywood or OSB). (Some cement board products may not require the underlying membrane if the seams are properly waterproofed.)Nov 7, 2021.
