In high-performance wall construction, it’s often the smallest components that have a significant impact on the finished result. V494 and other resilient tapes are a good example — easily overlooked during specification, yet capable of contributing to acoustic performance, thermal detailing and the quality of the finished wall.
What are resilient tapes?
Resilient tapes such as CST/Norseal V494 are high-performance gaskets applied between structural framing and wall linings. In both timber frame and Light Gauge Steel Framing (LGSF) construction, they create a continuous resilient layer at the point where framing meets plasterboard or other lining materials.
It’s a simple intervention, but one that can provide several useful performance benefits.
The problems they solve
Noise transmission and flanking sound
In timber and steel frame construction, sound and vibration can travel through rigid connections between framing and linings. Resilient tapes help interrupt this transmission path by separating the lining from the supporting frame, reducing direct vibration transfer and helping improve acoustic performance.
Thermal bridging
Direct contact between framing and internal linings can contribute to heat transfer through the wall build-up, particularly where highly conductive steel framing is used. Resilient tapes introduce a continuous separation layer along the stud or track, helping to reduce thermal bridging and support the wider thermal performance strategy required under Approved Document L.
Ghosting
Differences in surface temperature at framing positions can contribute to visible marking or “ghosting” on finished internal surfaces. Appropriate thermal detailing can help reduce the temperature differences that contribute to this effect and improve the consistency of the finished wall.
Where they’re most valuable
V494 and resilient tapes are particularly well suited to:
- High-specification residential projects where acoustic comfort is a priority
- Multi-residential and apartment buildings where acoustic performance between spaces is important
- Commercial projects with demanding internal environment requirements
- LGSF construction where heat transfer through steel framing requires careful consideration
Getting the specification right
As with all performance products, the tape is only as effective as the specification and installation behind it. The appropriate product needs to be selected for the framing type, lining system and required performance, and installed consistently throughout the relevant construction detail.
At Lynvale, we work with contractors, specifiers and installers to identify appropriate products for specific project requirements. If you’re working on a timber or steel frame project and want to understand how resilient tapes could contribute to the performance of the wall build-up, get in touch with the Lynvale team.
