Armatherm™ TIM (thermal insulation material) FRR material provides a combination of low thermal conductivity and high compressive strength and has been used in hundreds of structural steel framing connections transferring load in moment and shear conditions. The material is made of a reinforced, thermoset resin which is fire resistant, does not readily burn and has very limited creep under load, making it the ideal material for use in structural steel and façade thermal break connections.
Armatherm™ TIM (thermal insulation material) 500 is a high strength, polyurethane material made in several densities to support a wide range of loading conditions. Due to its closed cell structure, it does not absorb water or moisture and has limited creep under continuous load. The material is thermoset, does not melt and is flame resistant making it an ideal material for use in structural thermal break connections.
Armatherm™ TIM (thermal insulation material) 500 series material can support and transfer loads up to 2,500 psi while providing minimal energy loss. Foundations are a part of a building’s envelope. The connection from slab on grade to foundation wall and wall above foundation wall transition are both areas where thermal bridging occurs. Additionally, if the lower level of a building functions as an uninsulated storage or parking area, the support columns or pile caps connecting the base slab to the first floor also create a thermal bridge.
The linear transmittance at these locations can be reduced by as much as 60% by using an efficient, structural thermal break. Armatherm™ 500 is a load bearing, thermal break material manufactured in several densities to provide a range of load capacities with R values as low as R 3.8 per inch.
The most common interface details for structural steel connections are canopies and balconies that use cantilevered steel or aluminum elements. These elements are typically connected to slab edges or spandrel beams on the interior side of the thermal envelope passing through insulation and air barrier layers. The R value of a wall assembly can be reduced by as much as 60%.
Using a thermal break at these connections will improve the U value of a wall assembly which includes this type of point transmittance. Armatherm™ FRR structural thermal break material is capable of transferring the loading in moment and shear connections without creating significant rotation.
Armatherm™ TIM (thermal insulation material) FRR material provides low thermal conductivity and high compressive strength. It has been used in hundreds of structural steel framing connections in moment and shear conditions including canopy and balcony applications. Armatherm™ washers prevent a thermal bridge through bolted connections which would otherwise provide a path for heat flow through the thermal break assembly.
Roof to wall and parapet locations require structural framing for support which prevents continuous insulation from roof to façade. This creates a thermal bridge which can be prevented by providing an Armatherm™ TIM (thermal insulation material) 500 series structural thermal break under the parapet connecting the façade and roof insulation and improving the effective R value by as much as 30%. A thermal break can also be installed within the envelope at roof penetration points where structural elements are supported.
A thermal break at these locations will improve the U value of the roof assembly and prevent potential condensation problems at the structural connection. Armatherm FRR and 500 series thermal break materials can transfer the loading conditions at these locations while significantly reducing heat flow. The transmittance can be improved by as much as 80%.
Continuous exterior insulation is almost always compromised by metallic structural connections such as clips and girts which create a thermal bridge when connected to steel stud framing. These connections in conjunction with the steel studs have a significant impact on the U value of wall assemblies. Insulation effectiveness can be reduced by as much as 50% due to these heat flow paths. Armatherm™ Z GIRTs improve the U value of cladding and wall panel assemblies by eliminating the use of highly conductive metal girts and aluminium brackets creating wall assemblies that are up to 98% efficient.
Steel columns traditionally extend through the building envelope (floor slab) and insulation at their base. In low temperature buildings such as freezer rooms and cold storage facilities, this creates a thermal bridge and point transmittance between the steel column and the foundation. This is also the case for columns which bear on exposed foundation walls. Armatherm™ 500, high strength material can support and transfer column loads while providing an effective thermal break between the column base and concrete foundation. With R values as low as R 3.8 per inch, Armatherm™ can help to meet the baseline insulation requirements for floors in cold storage and refrigerated storage facilities more efficiently than timber or aerated concrete.
Masonry veneer walls require tie-backs and shelf angles which form significant thermal bridges and reduce the walls’ R value by as much as 60%. Shelf angle structural steel connections penetrate the insulating layer (thermal envelope) of the wall assembly creating a continuous structural thermal bridge. The impact of the thermal bridging can be reduced using Armatherm™ TIM (thermal insulation material) material and washers between the angle and the structure creating a thermal break within the insulating layer. Heat loss can be reduced further by using a stainless steel angle/bracket system in conjunction with Armatherm™ material completely eliminating a continuous thermal bridge. A support/bracket solution is also available to support and restrain stone cladding.
Like shelf angles, curtain wall mullions have an impact on the thermal performance of a building’s envelope.
Small in area but required in many locations, the total heat loss due to these highly conductive elements can be substantial. Armatherm™ TIM (thermal insulation material) thermal break material transmits the structural loads of curtain wall frames and spandrel panel connections while reducing heat loss.
Thermal bridging also exists at cast in situ concrete balcony and floor slab edge connections. These connections create heat losses as they pass through the thermal envelope of the building. Armatherm™ TIM (thermal insulation material) 500 series thermal break material used with Armatherm™ rebar provide structural support of cantilever stresses with lower thermal conductivity than even stainless steel elements.