Cost-Effective Dristud Wall Wrap Exceeds NZBC Requirements

Affordable housing for families has been an important factor in the recent push in the building sector. There are various reasons given for the housing crisis, however housing families in affordable and healthy homes is the key. Understanding of building science has improved over the years and designers are able to create healthier homes that are affordable by using quality materials in the right applications. Finding the right quality products at affordable prices is another challenge altogether.

The growth in the building industry has flooded the market with too many similar products and builders are left wondering which ones to use.

When it comes to wall wraps, there are a few on the market at various price ranges and most of them have BRANZ or CodeMark certification. However, that does not necessarily mean the products meet all of the technical properties required by the New Zealand Building Code in every application. For example, some products cannot be direct fixed to all wall claddings and also cannot be used on gable ends. Builders need to be aware of the limitations of use.

DriStud Wall Wrap is a universal wrap which outperforms the requirements of the NZBC at a very competitive price. It is fire retardant, can be used on gable ends, and can be direct fixed with all claddings including non-absorbent materials. DriStud's competitive pricing does not affect quality, so builders can be relaxed using it, knowing that it will perform.

Technical Data:

Property	Test Method	Requirements	Results
Water Vapour Resistance	ATM E96 Procedure B	≤ 7 MN s/g	0.33 MN s/g
Absorbency	AS/NZS 4201: Part 6	≥ 100 g/m²	157 g/m²
Air Resistance	BS ISO 5636-5:2003	≥ 0.1 MN s/m³	0.426 MN s/m³
Water Resistance	AS/NZS 4201.4:1994	≥ 20mm water head	Pass
Flammability	AS 1530.2:1993	≤ Index 5	Index 1
Tensile Strength	ASTM D882	n/a	MD: 4.90 KN/m CD: 2.40 KN/m
Edge Tear Resistance	TAPPI T470	n/a	MD: 241 N CD: 120 N
UV Exposure			60 days

TCL Hunt also offers Cool Window Flashing tape. With its modified butyl adhesive and high conformable film barrier, DriStud Cool Window Flashing Tape guarantees reliable performance in even severe weather conditions down to -25°C. Unlike other products of its kind, Cool Tape does not require two layers on the sill nor corner moulds. With no primer nor heat gun required, installation time is saved. It is a premium product at a very affordable price.

Both products have CodeMark certification and meet all the requirements of the NZ Building Code.

DriStud Cool Window Flashing Tape

DriSpace

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DriStud Cool Window Flashing Tape is a window sealing system that can also be used for general sealing of wall penetrations.

DriStud Cool Window Flashing Tape is intended for use in new and existing buildings in conjunction with an underlay or rigid air barrier.
It is used around framed joinery openings and penetrations, providing a secondary weather resistant barrier.
It is designed to be used in conjunction with air seals and joinery flashing systems, but not as a substitute.
DriStud Cool Window Flashing Tape may also be used at joinery heads to seal flashing upstands to the building wrap.
Where a rigid underlay has been installed, DriStud Cool Window Flashing Tape may be used to seal all junctions and penetrations.
It is suitable for use with timber and steel framed buildings as well as masonry structures.
It may be used where the environmental temperature fluctuates between -25ºC and 80ºC.
Must be installed in accordance with the DriStud Cool Window Flashing Tape Installation Manual Rev 1, July 2015.
The scope of the CodeMark certificate covers the use of DriStud Cool Window Flashing Tape in buildings:
- up to 10m in height, and
- with a risk score less than 20, when evaluated against the E2/AS1 risk matrix, and
- in wind zones up to extra high as defined in NZS 3604:2011, and
- in all corrosion zones as defined in NZS3604:2011.

up to 10m in height, and
with a risk score less than 20, when evaluated against the E2/AS1 risk matrix, and
in wind zones up to extra high as defined in NZS 3604:2011, and
in all corrosion zones as defined in NZS3604:2011.

When specified and installed in accordance with the requirements of the CodeMark Certificate, DriStud Cool Window Flashing Tape will comply with the following provisions of the NZ Building Code:

Clause B1 Structure: B1.3.1, B1.3.2, B1.3.3 (a, c, q), B1.3.4 (a, b, c, d, e)
Clause B2 Durability:B2.3.1 (b), B2.3.2 (a)
Clause E2 External Moisture: E2.3.2, E2.3.7 (a, b, c)
Clause F2 Hazardous Building Materials: F2.3.1

Structure

Durability

External Moisture

Hazardous Building Materials

CodeMark

DriStud Wall Wrap

DriSpace

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DriStud Wall Wrap is engineered from resilient non-woven fabric and is a commercial grade building wrap.

DriStud Wall Wrap is intended for use on buildings designed in accordance with NZS 3604:2011 paragraph 1.1 and in Wind Zones up to and including ‘Very High’.
It may be installed over timber and steel framing.
Where DriStud Wall Wrap is to be installed over steel framing it is important to ensure an adequate thermal break has been installed.
DriStud Wall Wrap may also be used in conjunction with the following substrates:

Oriented strand board
Concrete
Fibre cement
Plywood

DriStud Wall Wrap may be used where the external cladding is direct fixed or over a nominal 18mm ventilated cavity as per table 3, E2/AS1.
The scope of the CodeMark certificate covers the use of DriStud Wall Wrap in buildings:

up to 10m in height, and
with a risk score less than 20, when evaluated against the E2/AS1 risk matrix, and
up to and including very high wind zone as defined i in NZS 3604:2011, and
in all corrosion zones as defined in NZS3604:2011.

The scope of the certificate covers the use of DriStud Wall Wrap with DriStud Cool Window Flashing Tape, DriStud Bozz Window Flashing Tape and rigid air barriers made from plywood, OSB or fibre cement.

Oriented strand board
Concrete
Fibre cement
Plywood

up to 10m in height, and
with a risk score less than 20, when evaluated against the E2/AS1 risk matrix, and
up to and including very high wind zone as defined i in NZS 3604:2011, and
in all corrosion zones as defined in NZS3604:2011.

When specified and installed in accordance with the requirements of the Codemark Certificate, DriStud Wall Wrap will comply with the following provisions of the NZ Building Code:

Clause B1 Structure: B1.3.1, B1.3.2, B1.3.3 (a, c, q), B1.3.4 (a, b, c, d, e)
Clause B2 Durability: B2.3.1 (b), B2.3.2 (a)
Clause C Protection from Fire: C3.4(c)
E2 External Moisture: E2.3.2, E2.3.7 (a, b, c)
Clause F2 Hazardous Building Materials: F2.3.1

Structure

Durability

Protection from Fire

External Moisture

Hazardous Building Materials

CodeMark

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