DuPont Tyvek System Protects Enclosure of South Auckland School

DesignTRIBE was formed as a collaborative architectural design practice in 1994 and specialises in the design of kaupapa Maori as well as mainstream educational facilities ranging from early childcare to tertiary facilities, community and residential facilities. The practice recently specified DuPont Tyvek systems to protect the enclosure of Nga Tapuwae College in South Auckland.

The following compatible DuPont Tyvek products were specified on the project:

DuPont Tyvek HomeWrap Wall Underlay

The world's 'most installed' wall underlay was installed behind the concrete and metal cladding. DuPont Tyvek HomeWrap can be exposed to UV for up to 120 days, which gives the contractor extra time if there are construction delays during winter build conditions.

DuPont Tyvek Contractor Tape for Underlay Overlaps

The acrylic seam tape, sealed overlaps in the DuPont Tyvek HomeWrap. This helps maximise resistance to air and water infiltration. The tape also provides an easy way to repair any tears in the underlay if they occur during the construction process.

DuPont FlexWrap Flashing Tape for Window and Door Openings

The 100% butyl rubber peel and stick adhesive tape was used to protect window and door rough openings from moisture intrusion. It is compatible with most building materials including the DuPont Tyvek HomeWrap and treated timber.

DuPont FlexWrap can be stretched into corners of window openings or around geometric shapes without the need for cutting or plastic corners. It is self sealing and can stick in temperatures as low as -4ºC.

DuPont Tyvek Metal Roof Underlay

The breathable, self supporting, synthetic roof underlay with a built in 8mm drainage mat was installed under the metal roof to help provide extra ventilation. DuPont Tyvek Metal is recommended for roof pitches greater than 3 degrees and features an adhesive tape to seal overlaps.

DuPont FlexWrap NF Flashing Tape

Tyvek

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DuPont FlexWrap NF is a one piece, flexible flashing tape, with an 100% butyl self adhesive.

LBC Red List Free

Homestar / Green Star

For a risk score between 0-20 in accordance with NZBC Acceptable solution E2/AS1
Building Wind Zones up to and including Very High NZS3604:1999, Extra High if used over Rigid Air Barrier
To seal around windows, doors and other wall penetrations as a secondary defence against water penetration
It is compatible with timber and steel framed buildings
It is compatible with most construction materials including concrete, wood, steel and synthetic wall underlays
Can be used in Rigid Air Barrier applications on ply and fibrecement substrates

Extra High Wind Zone

Low Wind Zone

Very High WInd Zone

DuPont FlexWrap NF when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2.3.1 a) 50 years b) 15 years
NZBC Clause E2: External Moisture. Contributes to meet these requirements
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people

DuPont FlexWrap NF meet the requirements of Acceptable Solution to NZBC E2, and has a CodeMark Product Certification.

Durability

External Moisture

Hazardous Building Materials

CodeMark

DuPont Tyvek Contractor Tape

Tyvek

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DuPont Tyvek Contractor Tape is a key component of the DuPont Tyvek Weatherization System.

DuPont Tyvek Weatherization System
Can be installed in all wind zones including Extra High

Used in North America and Europe for over 20 years. In New Zealand for over 10 years.

DuPont Tyvek HomeWrap Wall Underlay

Tyvek

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DuPont Tyvek HomeWrap is a breathable, fire retardant, synthetic wall underlay.

Cavity:
- All cladding types with both timber and steel framing
- Rigid Air Barriers, (over-sheathed)
Direct fixed:
- With absorbent claddings such as timber, polyymeric cladding, plywood, gypsum fibre cement, brick wood, and stucco plaster on timber framing, or over thermal break on steel framing
- Rigid Air Barriers, (over-sheathed)

All cladding types with both timber and steel framing
Rigid Air Barriers, (over-sheathed)

With absorbent claddings such as timber, polyymeric cladding, plywood, gypsum fibre cement, brick wood, and stucco plaster on timber framing, or over thermal break on steel framing
Rigid Air Barriers, (over-sheathed)

DuPont Tyvek HomeWrap Wall Underlay:

Can be installed in all Wind Zones up to and including Very High, or Extra High if over a rigid air barrier
A non-directional wall underlay meaning the wrap can be installed upside down or inside out and performance will not be compromised
Resistant to most surfactants meaning it is suitable for use behind Cedar Cladding (endorsed by the Western Red Cedar Association)
Can be used in all New Zealand climate zones
Can be used in all seismic and corrosion zones

Corrosion Exposure Zone D

Very High Earthquake Zone

Low Wind Zone

Specific Design Wind Zone

Very High WInd Zone

As per CodeMark Certification, DuPont Tyvek HomeWrap, when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2.3.1 a) 50 years and b) 15 years
NZBC Clause E2: External Moisture. Contributes to meet these requirements
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people

DuPont Tyvek HomeWrap is an Acceptable Solution to NZBC E2/AS1

Durability

Protection from Fire

External Moisture

Internal Moisture

Hazardous Building Materials

Energy Efficiency

CodeMark

DuPont Tyvek Metal Roof Underlay

Tyvek

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DuPont Tyvek Metal is a breathable, self supporting synthetic roof underlay.

Building wind zones up to and including Extra High.

Recommended for standing seam or low profile roof cladding applications in skillion roof type constructions or any application where extra ventilation is required.

It is recommended for use as a self supporting roof underlay (R2) on roof pitches greater than 3º.

Suitable for the following roof applications:

Direct fixing on all roof cladding types including concrete and clay tiles, profiled metal and pressed metal tiles
Roofs using plywood or other rigid air barrier type solid substrate under the cladding

3°

The use of DuPont Tyvek Metal is considered an alternative solution complying with NZBC Clause E2.

DuPont Tyvek Metal, when installed in accordance with the recommended guidelines will meet or contribute to meet the following provisions of NZBC:

NZBC Clause B2: Durability. Meets the requirement of NZBC B2/AS1 Table 1 (Building Wraps/Roof Underlay).
NZBC Clause E2: External Moisture. Contributes to meet these requirements for use as a roof underlay and air barrier.
NZBC Clause F2: Hazardous Building Materials. Meets this requirement and will not present a health hazard to people according to F2.3.1.

CodeMark

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