DuPont™ Tyvek® Supro Roof Underlay
Drawing from more than 20 years of international manufacturing experience in the field of construction, DuPont™ Tyvek® Supro is a roof underlay that has been proven worldwide to be durable and to perform in extreme environments.
DuPont™ Tyvek® Supro Roof Underlay
An underlay is a key component of the roofing structure, and provides an important element in the weather tightness of a roof cladding system. The underlay acts as a secondary barrier to water ingress from the external environment while also helping to control internally generated moisture. Their function in terms of building durability is important and their on-going performance needs to be preserved to guarantee the life of the building
|Unique flash spun HDPE patented product with absorbent and anti-slip non-woven top layer||
|High Tensile strength and lightweight||
|Total building envelope system||
|Australian Building Code and AS/NZS4200||Test Method||Requirement||DUPONT TYVEK SUPRO/SUPRO PLUS (2506B)|
|Australian Code Compliance||CodeMark||ABCB NCC2019 Deemed to Satisfy / Alternative Solution||CodeMark CMA-CM40190|
|Duty Classification||Table 1 AS/ aNZS 4200.1:2017||Medium||Extra Light|
|Vapour Permeability||ASTM E96||> 0.14µg/N.s||> 3.5µg/N.s|
|Vapour Resistance||ASTM E96||< 7.0MN.s/g||< 0.3MN.s/g|
|Vapour Control Classification||ASTM E96||Class 4||Class 4|
|Water Barrier||AS/NZS 4201.4||water barrier||Water barrier|
|Resistance to Dry De-Lamination||AS/NZS 4201.1||Pass||Pass|
|Resistance to Wet De-Lamination||AS/NZS 4201.2||Pass||Pass|
|Electrical Conductivity Classification||AS/NZS 3100||Electrically non conductive||non-conductive|
|Folding Endurance (MD)||AS/NZS 1301.423||log10 folds||pass|
|Folding Endurance (CD)||AS/NZS 1301.423||log10 folds||pass|
|Tensile (MD/CD)||AS 1301.448||> 9.5kN/m & 6.0kN/m||6.3kN/m & 5.0kN/m|
|Edge Tear (MD/CD)||TAPPI T470||65N||305N & 254N|
|Flammability Index||AS/NZS 1530 Part 2||≤ 5||≤ 5|
|Weight / Width||-||-||145gsm / 1500mm|
An underlay needs to:
Resist water and air penetration from above
Facilitate water vapour transmission from within by retaining and releasing condensed water as required
Protect insulation – thus promoting energy efficiency
The long-term performance of any underlay (Kraft or synthetic) can be highly dependent on the environmental conditions it is exposed to within the roof cavity. Condensation and moisture related issues can be managed by careful consideration of the roof design, ventilation used and climatic conditions of the area. Refer to the DuPont™ Tyvek® Supro technical datasheet for specific requirements.
DuPont™ Tyvek® Metal is a roofing drainage underlay which drains away the condensation that can build up beneath the cladding on standing seam metal roofs.
Tyvek® Metal roofing underlay is vapour-permeable, yet water-resistant and airtight. When used in combination with genuine Tyvek® accessories it can help to reduce condensation, improve overall airtightness, add thermal efficiency, and protect structural integrity.
Besides allowing condensation beneath stainless steel, aluminium, copper, and zinc roofs to drain away, Tyvek® Metal also reduces sound transmission such as rain clatter, and minimises material stress by permitting a degree of movement between the cladding and the timber beneath.
Key Benefits of DuPont™ Tyvek® Metal
Allows movement and reduces material stress by providing separation between metal sheets and timber substrate.
Reduces rain clatter and sound transmission.
Fitting Tyvek® Metal
Tyvek® Metal roofing drainage underlay is fitted beneath standing seam metal sheet roofs and the underlying timber boarding. The use of 150mm wide timber boarding with 2mm gaps between is recommended.