Thermal bridging overview
The use of cast-in-place concrete elements, such as balconies or parapets, can create significant thermal bridges, reducing the wall U-value by up to 50% and compromising the building envelope. As modern building envelopes become more insulated and airtight, solutions like concrete balcony thermal breaks and effective thermal break concrete slab details are crucial to minimize heat loss and address issues at connection points.
Armatherm Cast-In Situ
Key Features
- 3″ imperial or/ 75mm metric thick insulation body made from Armatherm 500-280 with a total R value of 5.7
- American 2304 Grade 75 stainless steel rebars for maximum structural performance and corrosion protection
- Standard ASTM bar sizes
- High-performance concrete compression modules
- Available with fire protection dependant on project requirements
The Solution
Enhancing the thermal performance of the building envelope and addressing thermal bridging are key priorities in modern construction. Increasing standards in local building codes, ASHRAE requirements, and sustainability programs like LEED emphasize this focus. Armatherm thermal breaks, including structural thermal break concrete solutions provide thermal break insulation for concrete slabs, effectively reducing thermal bridging.
The use of Armatherm CIS in concrete connections helps to:
- Prevent condensation and heat loss
- Improve the R-value
- Enhance indoor comfort
- Ensure compliance with building envelope standards
Advantages of the Cast-In Situ thermal break
- Effectively reduces thermal bridging and its impact in cast-in-place concrete walls and slabs
- Simple range, making design and installation straightforward
- Durable construction for easy transport and on-site handling
- Rigid structural insulation body allows for secure nailing to formwork and cutting on-site
- Quick installation with a step-by-step process
- Fully adaptable to meet specific project needs
- Designed for the construction market, available in both imperial and metric sizes, suitable for concrete-to-concrete thermal break applications
Frequently Asked Questions
Thermally, CIS is designed to reduce condensation and heat loss at concrete connections while improving overall building envelope performance and occupant comfort. Structurally, it delivers the strength and durability required for balcony and slab-edge applications. Customers also value it for its straightforward installation, robust construction, responsive technical support, and fast lead times.
The CIS performs in line with normal reinforced concrete. Long-term creep and settlement are not a concern.
Yes. Armatherm provides design assistance for CIS projects. To get started, send through the architectural and engineering details for the connection along with the loads the connection will experience.
The CIS includes a 3″ imperial (75mm metric) thick insulation body made from Armatherm 500-280 and American 2304 Grade 75 stainless steel rebars to standard ASTM bar sizes. It accommodates a range of slab thicknesses including 6″, 8″, 10″, and 12″. For bespoke sizes or project-specific requirements, contact the Armatherm team directly.
BUILDING SECTORS
Discover how our Cast-In Situ product supports a wide range of building sectors with effective thermal break solutions that reduce heat loss and improve energy performance.
Armatherm CIS Video
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