can hardie plank siding be installed over blackboard sheeting

by Dr. Roberto Graham MD 8 min read

Do you need plywood behind Hardie board?

Can Hardie board be installed on studs? HardiePlank® lap siding can be installed over braced wood or steel studs, 20 gauge (33 mils) minimum to 16 gauge (54 mils) maximum, spaced a maximum of 24 in o.c. or directly to minimum 7/16 in thick OSB sheathing.

Should Hardi plank be installed over tyvek or black paper?

Hardiplank 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. Hardiplank lap siding can also be installed over foam insulation up to 1” thick.† Irregularities in framing, sheathing, and/or foam insulation can mirror through the finished application. A weather-

What is the best tool to install Hardie plank siding?

• Method 1 - James Hardie® Siding installed directly over continuous insulation (c.i.) and other non-nailable substrates (e.g. gypsum sheathing) with combined thickness of 1 inch or less • Method 2 - James Hardie® Siding installed to furring strips that are attached through the c.i. and other non-nailable substrates (e.g. gypsum

Can James Hardie siding be applied to foam sheathing?

May 15, 2003 · We would like to use hardi plank siding for longevity and fire resistance. One company says it would install hardi plank right to the studs over tyvek or black paper while the other company says you need to sheath the walls in osb, then use black paper prior to siding, because hardi plank isn’t really a structural material.

Do you need OSB under Hardie board?

GENERAL REQUIREMENTS: 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.

Do you need sheathing behind Hardie board?

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.Sep 25, 2019

Do you need furring strips for Hardie siding?

Plus, HardiePlank comes with built-in drip edges on the top and bottom of each board (in HZ5 markets) which helps move moisture away from the wall and on to the face of the siding. With all that said, if you want to use furring strips as an added layer of protection behind HardiePlank you certainly can!Jul 8, 2020

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.Feb 20, 2018

Can Hardie board be installed over existing siding?

According to the best practices manual from James Hardie, existing siding can be used as a substrate as long as it is in good condition, meaning that it is not warped, bowed, curling, delaminated, or rotting.

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.

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.May 8, 2014

Can you install Hardie board over foam?

Method 1: Applying Hardie® Siding Directly through C.I. and Non-Nailable Substrates 1 inches thick and less: When applying James Hardie® Siding directly over the combined thickness of foam sheathing (continuous insulation) and other non-nailable substrates (e.g. gypsum sheathing), up to 1 inch thick, the foam sheathing ...

Can Hardie board be installed on studs?

HardiePlank® lap siding can be installed over braced wood or steel studs, 20 gauge (33 mils) minimum to 16 gauge (54 mils) maximum, spaced a maximum of 24 in o.c. or directly to minimum 7/16 in 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).

Should you caulk Hardie board siding?

APPLICATION: General: James Hardie believes it is good building practice to seal the joints to prevent moisture, such as wind-driven rain and snow, from penetrating the wall cavity. Caulking around windows, doors, eaves and trim edges gives added insurance that leaks will not occur.

Does Hardie board need a moisture 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.Apr 16, 2021

Keeping Your Existing Siding

Without properly inspecting and examining your current siding, it’s probably hard to tell its actual condition. That said, this is where you want to start when deciding if you should keep it. The James Hardie manual actually agrees that current siding works fine for a substrate but only if it’s in acceptable condition.

Using Oriented Strand Board (OSB)

If I find that the home has suffered from water or pest damage I will advise that it be removed. We can then continue inspecting the studs, wall cavity and any other areas to be sure of exactly what we’re covering up. Even if you don’t have damage and want to install new OSB, we can do that.

What is a hardie board?

Fiber Cement Siding Problems. The terms Hardie siding or Hardie board are commonly used in the industry as a name for all Fiber Cement siding. But that’s not accurate. Hardie is the brand name of a top fiber cement siding manufacturer, but they’re are lots of manufacturers out there that sell fiber cement siding.

How long does hardie siding last?

While a paint job on fiber cement siding lasts longer than wood—usually anywhere between 7-10 years, it’ll eventually need to be redone. And that can be a pretty expensive task.

Why is my siding cracking?

Over nailing with a nail gun or improper nailing. This is by far the leading cause we’ve found for cracked Hardie siding. Nails driven below the panel surface and directional nailing can cause cracking and splitting of fiber cement.

What is the worst thing about fiber cement siding?

Fiber cement siding is a hard, brittle product. One of the worst problems with Hardie siding is moisture damaged which can be caused by cracking. Water will run down from this sill, absorb into the siding, get behind into the sheathing and possibly the frame, causing all sorts of eventual problems.

When was fiber cement first used?

Fiber cement is a siding material that was first introduced in the 1980’s as a replacement for asbestos cement, wood, aluminum and vinyl siding products. Hardie has steadily grown in popularity since, mostly due to it’s durability, style, feel and texture.

Is hardie siding brittle?

Hardie siding is a fiber-cement product that comes with a great warranty, but any warranty will be void if the product is improperly installed. Fiber cement can also be brittle before being nailed to the wall. Care must be taken to properly store planks, which generally require two people to carry and install.

Is fiber cement siding good?

Fiber cement is a great siding material and Hardie board is by far the best kind we’ve used, but it only performs as well as it’s installed. We here complaints about fiber cement siding and get called to do repair work from time to time and every single time improper installation was the cause.

What is hardie siding made of?

By now you probably know that Hardie siding is made of fiber cement, which requires installers to take care when cutting to make sure that they don’t breathe in small sand (silica) particles. Continued exposure to these particles can lead to severe long-term health issues for workers if it isn’t managed correctly.

How much gap between James Hardie siding?

Hardie siding requires a minimum 2” gap from all hard surfaces like decks or rooflines, and at least 8” from any soft surfaces like grass, dirt, or gravel.

What is touch up mistake?

Touch-up mistakes are by far the most common error that Edmonton’s James Hardie installers make. Because James Hardie paints and cures its siding in its factories, the sheen of the touch-up that it sends out doesn’t quite match up. This means that contractors need to be careful to apply just the right amount of paint when painting nails or slight imperfections in the siding and trim.

How long is James Hardie siding?

James Hardie siding is 12 feet long, which means that siding on your longer walls will need to join together. Joining Hardie boards together is actually very easy, but there are a number of ways that contractors get it wrong;

Does James Hardie have rust proof nails?

Almost all nails and screws have some kind of rust-resistant coating, but they are not all created equal. Hardie board comes with a 30-year manufacturer’s warranty, but that means you need the nails to last at least that long too. James Hardie recommends that nails be hot dip galvanized (at a minimum) or stainless steel (as a best practice). Anything less and the nails may start to rust, leading to stains on your beautiful siding. Even worse, siding could start falling off!

Does siding absorb water?

Hardie siding does a great job of wicking moisture when it is installed on the wall, but when it’s uncovered and flat on the ground it will absorb water. If your contractor installs Hardie siding when it’s saturated, it may show signs of shrinkage or even staining over time.