Concrete products are unsuitable. Cement board fails under normal fire temps, it would die a very quick death in a rocket stove. Your idea may make a good mold to pack a fireclay around, though. It is strong enough to not collapse and would survive the initial firing to dry out the fireclay.

Furthermore, is concrete board fire resistant?

Yes, HardieBacker® 1/4″ Cement Board is deemed noncombustible when tested to ASTM E 136 and can be used in conjunction with other noncombustible materials around a fireplace. This does not mean that clearances to combustible building materials can be reduced by using HardieBacker 1/4″.

Additionally, can cement board be used around a fireplace? You can use Hardiebacker board around your fireplace. However, using fiber cement board like Hardieboard is acceptable in locations including the mantel and fireplace surround.

Correspondingly, can cement board be used as a heat shield?

Safe wood stove installations require a heat shield that will prevent heat from the wood stove from creating a fire hazard in the building materials that form the exterior wall. Hardi cement board is an inexpensive solution that will form the foundation of an effective heat shield for any application.

Is tile backer board fire resistant?

HardieBacker® cement board is a unique, cement based water resistant tile backerboard that can be used on walls, floors and worktops. The products meet the European standard for fibre cement – EN 12467 and its reaction to fire, in accordance with EN 13501-1, is A1,S1-d0.

Related Question Answers

Which is better durock or Hardibacker?

HardieBacker board is definitely the go-to choice when it comes to tiling and counter tops. The Durock board is abrasive and can damage certain surfaces—particularly porcelain, vinyl, and enamel–whereas HardieBacker does not contain any abrasive materials and is, therefore, the preferable board for underlaying.

What is HardiePlank?

A combination of cellulose fibers and cementitious materials, HardiePlank is fiber-cement siding that comes in long, horizontal strips, just like wood lap siding. HardiePlank is not to be confused with HardiePanel, also produced by James Hardie Industries.

Is Durock cement board fire rated?

The exact fire rating of Durock is dependent on the other materials used during construction, but a panel 1/4 or 1/2 inch thick typically provides an additional hour of fire protection.

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.

What is HardieBacker used for?

HardieBacker cement board is a tile underlayment made for wet areas like kitchens and bathrooms. This cement-based backer board, made of 90% Portland cement and sand, resists damage from moisture, provides excellent tile adhesion, and is formulated with MoldBlock Technology to protect the board from mold growth.

Is Gypsum flammable?

It's composed of gypsum pressed between two sheets of thick paper. Gypsum is a soft mineral that by itself is not flammable. Once the water dissipates, the gypsum begins to heat past the boiling point of water, and may begin to burn.

What do you line a fireplace with?

Fireplace chamber – lining

Another simple and easy way to complete the chamber is to line the inside with fire boards. These are made from vermiculite which, when treated, can withstand temperatures of over 1,000C.

What are fire boards?

Fireboard is a form of fire retardant drywall made from a hybrid of fibreglass and drywall. Consisting of a fiberglass layer that reinforces the gypsum layer, this wall lining doesn't disintegrate as quickly as regular drywall and prevents fires from spreading from room to room as rapidly.

What do you put on the wall behind a wood stove?

Type X drywall is a common material used for wood stove installations. Type X is a gypsum-based drywall that is 5/8 inch thick and is installed on each side of a 2-inch by 4-inch wood stud, spaced 16 inches on center or spaced 24 inches on center.

How thick does a hearth pad need to be?

The minimum thickness of a standard hearth's flooring within the fireplace is 4 inches. The hearth pad requires a thickness of at least 2 inches. However, if the fireplace's floor is at least 8 inches taller than the hearth extension, the hearth extension's thickness must only be at least 3/8 inch.

What is the R value of durock?

4 pieces of Durock is about R=1, and about 2″ thick. If you screw it down you will be able to remove or change it easily.

What is considered a non combustible wall?

While wall ‘coverings' are frequently noncombustible — like tile, brick, stone, metal — the underlying structure often contains wood, paper faced drywall or insulation, and other materials that could catch fire if enough heat were to be transmitted through the ‘noncombustiblewall covering.

What materials can be used for a fireplace surround?

Fireplace Design Idea – 6 Different Materials To Use For A Fireplace Surround
  • STEEL. One of the most popular fireplace surround materials.
  • WOOD. A less obvious choice for a fireplace surround, considering what you burn, is wood.
  • STONE.
  • BRICK.
  • TILE.

What do you use cement board 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.

Can you skim cement board?

You can‘t skim finish plaster to a depth of 10mm, the average skim coat is 2-3mm thick you can go slightly thicker but I wouldn't advise more than 5mm. Hardi say you can skim their cement boards but Aquapanel say you must use their own special & probably expensive plaster.

Can you use plasterboard around a log burner?

Normal gypsum plaster is not heatproof. The backer board should be ok but if the log burner is within three or so inches of the wall, the skim coat will craze and crack, and probably eventually fall off.

What is code for fireplace surround?

The National Fire Code dictates that any combustible material (e.g., wood mantel or similar trim) must be at least six inches from the firebox opening. An additional inch of clearance is needed for every 1/8 inch the combustible material or trim protrudes.

How much is a cement board?

Cost of Cement Board Siding
Cement Board Siding CostsZip Code
Cement Board Siding – Installation Cost$252.00 – $384.00$504.00 – $648.00
Cement Board Siding – Total$372.00 – $576.00$744.00 – $984.00
Cement Board Siding – Total Average Cost per square foot$3.95$7.20