The industry's solution for heat shields PermaBASE cement boards are the industry-preferred choice. Installation-ready and easy-to-use, PermaBASE® cement boards eliminate the need for field fabrication, saving time while allowing for enhanced performance and wood-burning stove placement closer to the wall.
Cement board typically has a thermal conductivity (k-value) ranging from 0.18 to 0.35 Watts per metre-Kelvin (W/mK). Compared to concrete (1.0-1.8 W/mK), this relatively low thermal conductivity allows cement boards to provide some insulation value.
It is not a good idea unless you like destroying the cement board. Sustained high heat will cause cement to dehydrate and then deteriorate.
Some high-end rigid heat shields are made out of either aluminum, gold or composite, with most examples including a ceramic coating to provide a thermal barrier, which improves heat insulation. The flexible heat shield are normally made from thin aluminum or gold sheeting, most commonly sold either flat or in a roll.
As long as it's non-combustible it should be fine. Note that some cement board uses cellulose as a filler and another uses styrofoam pellets so be sure it is either pure cement board or uses a filler like pumice that is non-combustible.
Replacing the back wall with heat-resistant materials, like heat-resistant stones or a specialized wood stove heat shield, can be cumbersome and aesthetically displeasing. A simpler, more elegant solution is to use a cast iron fireback as a heat shield for the wood stove.
A high density cement board reinforced with inorganic fibers, NAD-11 is suitable for applications requiring continuous operation in temperatures up to 500°C (932°F). NAD-11 is dimensionally stabile, non-combustible, chemically inert, and it retains its mechanical strength at temperature.
Here at Direct Stoves, we favour the use of vitreous enamel heat shields. This is because vitreous enamel is non-combustible, heat resistant up to 650ºC and is an excellent conductor of heat.
In applications such as space flight or balloon-borne instruments, where weight is a primary concern, aluminum heat shields are favored. While copper and aluminum both have high thermal conductivities, copper has traditionally been favored because of the ease of joining copper to copper and copper to stainless steel.
Coated fabrics are often used as heat shields and for protective purposes. Coatings can be made from neoprene, silicon, ceramic or others and are also UV, chemical and abrasion resistant. Heat shields made from heat resistant fabrics are highly durable and are able to be used in extreme environments.
It is not as resistant to fire and cannot be used on floors or where water could come in contact with it because it is weak when wet. Because it can deteriorate over time, regular inspections of its condition should be conducted, especially when high-traffic areas are involved.
PermaBASE® Cement Board offers a simpler, cleaner way to install fireplace insert surrounds that saves installation time. The boards arrive ready to be installed, no jobsite preparation needed.
Superior Strength and Durability. DUROCK Next Gen Cement Board's high compressive strength offers damage and impact resistance while maintaining dimensional stability and does not delaminate. Fire Resistance. DUROCK Next Gen Cement Board is a non-combustible panel and meets CAN/ULC S114 and ASTM E136.
Cement board siding is a poor insulator and absorbs a considerable amount of heat in warm months.
Mat-faced gypsum cover boards are increasingly used as a cement board alternative because they are lighter and easier to install. There are also performance enhancing benefits that mat-faced gypsum cover boards have over traditional cement alternatives.
Fire Resistance of Cement Board
They can endure high temperatures without combusting immediately, providing a critical buffer that slows down the fire's progression and gives occupants valuable time to evacuate safely.
When you park your car on grass, hot exhaust elements can cause fires. Heat shields help prevent those accidents from happening. A gas tank heat shield especially should not be removed permanently, car manufacturers put them on your vehicle for a reason.
Aluminium foil is very often laminated on carrier material for strong heat protection. Thus, the light weight and good heat protection can also be optimally used, for example, by the fire brigade and fire protection.
The industry's solution for heat shields
PermaBASE cement boards are the industry-preferred choice. Installation-ready and easy-to-use, PermaBASE® cement boards eliminate the need for field fabrication, saving time while allowing for enhanced performance and wood-burning stove placement closer to the wall.
Please be aware that FC or fibre cement sheeting is not recommended to be used near hot or open flame areas. Even though FC sheeting is a non- flammable material, It has a tendency to pop and explode into sharp pieces under prolonged exposure to heat.
By far the most effective heat shields are the air-cooled type. These shields are constructed with a sheet of 24 gauge or thicker sheet metal, or 1/2" or thicker cement board, with 1" of air space behind the shield and around the perimeter to allow free airflow.
Do not install board when the board is wet. In exterior applications, USG Durock® Brand Cement Board with EdgeGuard should not be left uncovered for a period of time exceeding 90 days.
Durock Cement board can be used on exterior walls.
Fiber cement siding resists fire thanks to its unique composition. The cement component provides excellent fire resistance, as cement is inherently non-combustible. The addition of sand and cellulose fibers further enhances its resistance to flames.