In high-performance wall construction, it’s often the smallest components that have the biggest impact on the finished result. V494 and resilient tapes are a perfect example — underspecified on many projects, yet critical to achieving the acoustic comfort, thermal performance, and clean finishes that clients increasingly expect.
What are resilient tapes?
Resilient tapes such as CST/Norseal V494 are high-performance gaskets applied between the structural framing and the wall lining. In both timber frame and Light Gauge Steel Framing (LGSF) construction, they create a continuous acoustic and thermal break at the point where framing meets plasterboard or other lining materials.
It’s a simple intervention — but the performance benefits are significant.
The problems they solve
Noise transmission and flanking sound
In timber and steel frame construction, sound and vibration travel easily through rigid connections between framing and linings. Resilient tapes interrupt that path, reducing vibration transmission and eliminating the squeaks and flanking noise that are notoriously difficult to resolve once a building is completed.
Thermal bridging
Every point of direct contact between a cold frame and an internal lining is a potential thermal bridge. Resilient tapes provide a consistent break along the full length of the stud or track, improving overall thermal performance and contributing to Part L compliance.
Ghosting
One of the less well-known consequences of poor detailing at stud positions is ghosting — the condensation-related staining that gradually outlines the framing pattern through a finished wall surface. It’s unsightly, difficult to remedy, and entirely avoidable with the right tape specification from the outset.
Where they’re most valuable
V494 and resilient tapes are particularly well suited to:
- High-spec residential projects where acoustic comfort is a priority
- Multi-residential and apartment buildings where party wall and floor performance is critical
- Commercial projects with high internal environment standards
- Any LGSF build where thermal bridging through steel framing is a known risk
Getting the specification right
As with all performance products, the tape is only as effective as the specification and installation behind it. The right product needs to be selected for the framing type, lining weight, and performance target — and applied consistently across the full build-up.
At Lynvale we work with contractors, specifiers, and installers to identify the right products for the specific project requirements. If you’re working on a timber or steel frame project and want to understand how resilient tapes could improve performance, get in touch with the team.
