Moisture Management for Suspended Timber Floor Construction
Many suspended timber floor constructions have discontinuous insulation between the joists. That leaves an opening to improve moisture management and airtightness – by fitting a Tyvek® membrane and carefully sealing the gaps and joints.
Tyvek® membranes are ideal for suspended timber floor construction. They are vapour-open, yet greatly reduce air flow when correctly installed. This helps to minimise underfloor condensation (and hence the risk of mould or decay) while improving the thermal efficiency of your floor and building.
Tyvek® Supro membranes are sturdy and durable. They provide adequate support for the insulation, and are recommended for use in suspended timber floor constructions. To achieve optimal airtightness in suspended timber floor construction, however, it is important to fit them methodically. Airtightness can only be achieved if the membrane is laid continuously with sealed laps.
Full Range of Accessories
DuPont has a full range of top quality tapes and accessories to help you achieve optimal airtightness. Click here for details:
DuPont™ Tyvek® offers free CPD seminars for architects and other construction professionals covering energy efficiency and building protection.
DUPONT PRODUCTS & SERVICES
All Tyvek® breather membrane products
A complete listing of all Tyvek® breather membrane products
Tyvek® Supro is the market-leading breather membrane, and is a water resistant membrane suitable for all supported and unsupported pitched roof applications in commercial and residential buildings.
AirGuard® Smart Variable Sd
DuPont™ AirGuard® Smart is a strong and lightweight flexible AVCL that can adapt its performance to changes in humidity levels during and after construction to provide superior airtightness and effective condensation control.
DuPont™ AirGuard® Reflective is a low emissivity internal vapour barrier that combined with an airgap can enhance thermal comfort by reflecting up to 95% of radiant heat back into the building.
DuPont™ AirGuard® Control is a tough, transparent vapour control barrier that improves airtightness by reducing convective heat loss and air leakage while also minimising the risk of condensation in roof and wall insulation.
Tyvek® Double-sided Tape
DuPont™ Tyvek® Double-sided Tape is an advanced sealer tape that bonds all Tyvek® membranes to smooth surfaces, and seals membrane overlaps effectively.
Tyvek® Butyl Tape
DuPont™ Tyvek® Butyl Tape provides a moisture- and airtight seal between Tyvek® breather membranes or AirGuard® AVCLs and a wide range of materials.
Tyvek® Metallised Tape
DuPont™ Tyvek® Metallised Tape is a single-sided, reflective waterproof sealing tape that seals overlaps in Tyvek® Enercor® Roof, Tyvek® Reflex, and DuPont™ AirGuard® AVCLs.
Tyvek® Acrylic Tape
DuPont™ Tyvek® Acrylic Tape is the ideal single-sided tape for repair work, or for making good around windows and pipes. It provides strong, durable bonds, and is suitable for use with most Tyvek® and AirGuard® products.
Tyvek® Supro at the Jamaica Inn: Reliable resistance for a windswept cultural icon
The famous Jamaica Inn is situated 280metres above sea level on Bodmin moor. The roof of its new accommodation extension benefits from advanced breather membrane Tyvek® Supro, which is fully compliant with BS5534:2014
INFORMATION & IDEAS
Find here all the technical information about DuPont™ Tyvek® & DuPont™ AirGuard®.
- Tyvek® is compliant to New BS5534 Annex A
- Tyvek® offers unrestricted application when tested in accordance with BS5534:2014
- Free CPD Seminars
- Building In Energy Efficiency
Give Home Energy Efficiency a Boost
DuPont™ Tyvek® solutions can significantly improve home energy efficiency. The combination of low-emissivity, vapour-open Tyvek® Reflex and AirGuard® Reflective is particularly effective.
Tape Selection Guide
Find the right Tyvek® or DuPont™ FlexWrap tape with our Tape Applications Selection Guide.
Underlayment: Quality and Thickness of Functional Layers Are Critical
Tyvek® membranes are proven to resist ageing better than most common multi-layer underlayments. Even after prolonged exposure to UV radiation and heat, Tyvek® underlayment stays watertight and provides superior condensation control.
- What Makes a Tyvek® Watertight Breather Membrane Unique?
CE Compliant Membranes
All DuPont breather membranes, including Tyvek® and AirGuard®, are fully CE compliant, and carry the CE marking required throughout Europe.
- The Tyvek® Evolution Story
- How to - Selecting the right vapour control and vapour barrier sealing tape for the job