Is Hardiflex waterproof?

Asked By: Fulvio Sanpedro | Last Updated: 21st June, 2020
Category: home and garden indoor environmental quality
4.8/5 (2,600 Views . 10 Votes)
It is extremely hard and waterproof, meaning it will not deteriorate over time when exposed to water, making it ideal for use in high-traffic areas that are susceptible to the adverse effects of moisture. It is not an inexpensive product and should be used judiciously.

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In respect to this, is HardiFlex water proof?

printed on the reverse face of the sheets. Advantages HardiFlex building boards are as durable as they are adaptable - they will not burn, are resistant to permanent water and termite damage and when installed as directed, are resistant to rot and warping.

Also, what is HardiFlex used for? Hardiflex Ceilings are flexible and may be used in curved seamless and panelized or tiled designs. It can also be used for wet area applications (such as areas of bathroom, kitchen, laundry area).

Hereof, can HardiFlex get wet?

Its designed to handle water and will be fine. The cons of using wet hardiflex is it bends easier and is heavier but will dry out.

What is HardiFlex board made of?

While fiber cement board is made from materials developed from a mixture of Portland cement to cellulose fibers which has advantage of non-causing toxic substances, flexibility, and tougher quality, it can withstand weathers from strong sun to heavy rain. It can be used for exterior work.

36 Related Question Answers Found

Is HardiFlex termite proof?

Hardiflex Building Board Information. HardiFlex building boards are as durable as they are adaptable - they will not burn, are resistant to permanent water and termite damage and when installed as directed, are resistant to rot and warping.

What is the size of HardiFlex?

Standard Sheets Size
Sheet Thickness
Dimension (Length x width) 4.5mm 6.0mm
2440mm x 1220mm (8ft x 4ft)
3660mm x 1220mm *

Does Hardie board 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. Luckily, it takes lots of water to saturate Hardie products! It's no problem for a contractor to install James Hardie products in light rain.

Do I need a vapor barrier behind cement board in shower?

You still need a vapor barrier with cement board, although in this case the barrier can go behind the board. Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall.

Does Hardie board need waterproofing?


cement backer board is not waterproof,but water cant hurt it,even when soaked in water for months or even years

Is HardiFlex heat resistant?

Free of asbestos, HardiFlex® Senepa cement fascia board is resistant to damage caused by fire, moisture, termite infestation, humidity, hot weather and cold and windy climates — when installed and maintained correctly.

Is Hardiflex cancerous?

How can asbestos affect my health? Breathing in asbestos fibres can cause asbestosis, lung cancer and mesothelioma. The risk of contracting these diseases increases with the number of fibres inhaled and the risk of lung cancer from inhaling asbestos fibres is also greater if you smoke.

Can you use Hardiflex for flooring?

Answer. No, HardieFlex® Flooring is meant to be a flooring substrate for internal residential applications. Using it as the finished flooring will scratch the coating of the board and damage the board itself, so a floor finish such as tiles, vinyl, wood laminates, or carpet must be laid over it.

Is Hardiflex fire rated?

Durable. Engineered to endure. Hardie's fibre cement is resistant to fire, termites, rot and damage from moisture.

Is Hardiflex asbestos?


Hardiflex from 1985 does not likely contain asbestos as Hardie stopped using asbestos in it in 1981.

What is cement board used for?

Cement backer board is mainly used as a sub-surface for tiling. Cement backer board is often used as a tile base on plywood or OSB subfloor. Cement backer board on concrete as a subfloor or underlayment is usually not recommended or needed. In most cases, you can apply tile directly to the concrete.

What kind of paint do you use on Hardiflex?

The most economical type of paint recommended for HardieFlex® fiber cement boards are water-based (latex) paints. Acrylic, vinyl, and PVA are all water-based paints as well. Acrylic can be used for both external and internal applications.

What materials can be used for ceilings?

The material used for a ceiling should be appropriate for the room's purpose, and there is no shortage of ceiling materials to choose from. Some common choices are drywall, plaster, wood, tile and metal. Popcorn is a common ceiling texture.

What is fiber cement board?

Fiber cement board is a building material typically used as siding or trim. This material was designed to provide a product that is durable and able to withstand climate extremes. Fiber cement boards require little maintenance and offer several advantages over traditional siding materials such as vinyl or wood.

When did cement board come out?


Around 1970 cement backer board was invented, and this new product enabled the installation of tile over plywood substrates once again.

How do you install a metal furring ceiling?

Learn How to Install Furring Strips for Metal Ceilings
  1. Step 1: Measure Twice. As the old saying goes, you need to be certain about the dimensions of your ceiling and of the wooden strips you're using before you start cutting them up.
  2. Step 2: Locate Your Ceiling Joists.
  3. Step 3: Install The Strips.
  4. Step 4: Level Out The Strips.

Does cement board need waterproofing?

Cement boards may be classified as water resistant as in not affected by water exposure; however, they do allow penetration and passage of water and water vapor. To waterproof cement boards, a liquid or membrane waterproofing material is applied over its surface.