Without a thermal break, studs, rafters and trusses create thermal bridges, increasing heat flow between the interior and exterior.
When the temperature of the stud is below dew point, moisture will condense on interior walls, leading to frost or mold.
Solutions:
Apply ICYNENE® LD-C-50™ spray foam insulation as an exterior insulation material and a cavity wall insulation. The rule of thumb is to apply at least 25% of the overall insulation R-value outside the steel frame.
Alternatively, fasten steel furring strips or top hat sections horizontally across the studs to which gypsum board or sheathing is fastened. Then install the spray foam insulation behind the studs. This strip can also replace the bridging that may be needed when using light gauge “C” section steel studs (see diagram).
Also cover the inside surface of structural elements with spray foam insulation where possible. For example, use it on the underside of roof rafters in an unvented attic.
Results of Using Icynene:
Increased energy efficiency
Prevention of condensation, frost and mold
Improved occupant comfort
Hard-to-Insulate Spaces
Common Problems:
Designs or architectural features can pose insulation challenges because conventional insulation doesn’t fill unusual cavities.
Fiberglass batting is standard-sized and must be cut, manipulated or compressed to fill unusual spaces (like around electrical boxes),
reducing its rated R-value and sometimes requiring extra finishing materials.
Steel framing consists of ''U'' and ''C'' sections, double studs and non-standard stud locations that make insulating a challenge.
Results of Using Icynene:
Seamless air-seal and insulation achieved in a single step, even around unusual geometry
Increased durability of the structure and consistent R value for the life of the building
Minimized flow of airborne moisture and threat of condensation, especially against metal
Flexibility of Icynene’s open-cell spray foam insulation to expand and contract along with the building structure, preventing delaminating and cracking over time
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Call us:0800 019 8584
info@heatlok.co.uk
Where to find us: 21 Broadfleet Close, Preston, PR3 6BT, United Kingdom