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DuPont™ Tyvek Airguard Reflective - Air & Vapour Control Layer

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Air and Vapour Control Layers (AVCL's) - Optimal protection from the inside

DuPont™ AirGuard Reflective is a 100% air tight air & vapour barrier featuring a metallised surface with a very low emissivity, which combined with a non-ventilated airspace significantly boosts thermal insulation in a building, and can be installed in roofs, below ceiling levels as well as in walls.

Tyvek AirGuard Reflective 100% air tight air and vapour barrier This 100% airtight vapour barrier is specially designed to give maximum thermal performance. Recommended for use with Tyvek® Reflex and Enecor® products, AirGuard® Reflective provides a good way to improve U-values in buildings. A highly vapour and water resistant low emissivity internal vapour barrier, it considerably reduces interstitial condensation as well as improves thermal efficiency by reflecting up to 95% of radiant heat.

Air & vapour control layers (AVCL’s) suitable for roofs, walls and floors help to reduce convective heat losses but also provide highly engineered vapour control for breathing systems.

When installed continuously with all laps and penetrations sealed, an AVCL will provide effective condensation control and airtightness for all building types. With an ever increasing requirement to conserve energy the portfolio of DuPont™ Tyvek products can help you achieve these environmental goals.

Due to the new regulation coming from the European Energy Performance of Buildings Directive, the requirements on the energy performance of buildings have been increased. Because of air leakage from the building interior, heat losses through convection can occur.

Choosing the right AVCL will help create a thermally efficient, condensation-free structure.

Installing AirGuard will keep the insulation and external cladding structure dry, and helps to reduce the energy consumption.

On top of choosing the right AVCL it is important to make the building envelope airtight and wind-tight by sealing gaps between and around insulation layers, AVCL's and breather membranes.


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Click to Buy: Tyvek AirGuard Reflective AVCL Membrane with Metalised low emissivity surface for Roofs, Ceilings and Walls

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Less popular product commonly available at selected depots. Du-Pont Tyvek Airguard Reflective, 1.5x50m = 75m² - ranging from £1.35 to £1.69 per m²

1 plus rolls @ £1.69 per m² = £126.70 (£152.04 inc-VAT) per roll
2 plus rolls @ £1.51 per m² = £113.30 (£135.96 inc-VAT) per roll
3 plus rolls @ £1.44 per m² = £108.23 (£129.88 inc-VAT) per roll
4 plus rolls @ £1.40 per m² = £105.25 (£126.30 inc-VAT) per roll
5 plus rolls @ £1.37 per m² = £103.10 (£123.72 inc-VAT) per roll
6 plus rolls @ £1.35 per m² = £101.37 (£121.64 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Butyl Double Sided Tape, 20mm x 30m = 30lm - ranging from £0.27 to £0.28 per lm

1 plus rolls @ £8.48 (£10.18 inc-VAT) per roll
4 plus rolls @ £8.40 (£10.08 inc-VAT) per roll
8 plus rolls @ £8.33 (£10.00 inc-VAT) per roll
12 plus rolls @ £8.25 (£9.90 inc-VAT) per roll
16 plus rolls @ £8.18 (£9.82 inc-VAT) per roll
20 plus rolls @ £8.10 (£9.72 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Butyl Double Sided Tape, 50mm x 30m = 30lm - ranging from £0.68 to £0.71 per lm

1 plus rolls @ £21.36 (£25.63 inc-VAT) per roll
4 plus rolls @ £21.17 (£25.40 inc-VAT) per roll
8 plus rolls @ £20.98 (£25.18 inc-VAT) per roll
12 plus rolls @ £20.79 (£24.95 inc-VAT) per roll
16 plus rolls @ £20.61 (£24.73 inc-VAT) per roll
20 plus rolls @ £20.42 (£24.50 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Double-sided Acrylic Tape, 50mm x 25m = 25lm - ranging from £0.57 to £0.60 per lm

1 plus rolls @ £14.95 (£17.94 inc-VAT) per roll
5 plus rolls @ £14.79 (£17.75 inc-VAT) per roll
10 plus rolls @ £14.63 (£17.56 inc-VAT) per roll
15 plus rolls @ £14.47 (£17.36 inc-VAT) per roll
20 plus rolls @ £14.30 (£17.16 inc-VAT) per roll
25 plus rolls @ £14.14 (£16.97 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Flexwrap NF, 152mm x 23m = 23lm - ranging from £3.45 to £4.51 per lm

1 plus rolls @ £4.51 per lm = £103.75 (£124.50 inc-VAT) per roll
2 plus rolls @ £3.94 per lm = £90.56 (£108.67 inc-VAT) per roll
3 plus rolls @ £3.73 per lm = £85.69 (£102.83 inc-VAT) per roll
4 plus rolls @ £3.60 per lm = £82.91 (£99.49 inc-VAT) per roll
5 plus rolls @ £3.52 per lm = £80.97 (£97.16 inc-VAT) per roll
6 plus rolls @ £3.45 per lm = £79.44 (£95.32 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Tape, 75mm x 25m = 25lm - ranging from £0.83 to £0.87 per lm

1 plus rolls @ £21.85 (£26.22 inc-VAT) per roll
5 plus rolls @ £21.62 (£25.94 inc-VAT) per roll
10 plus rolls @ £21.38 (£25.66 inc-VAT) per roll
15 plus rolls @ £21.14 (£25.37 inc-VAT) per roll
20 plus rolls @ £20.90 (£25.08 inc-VAT) per roll
25 plus rolls @ £20.67 (£24.80 inc-VAT) per roll

Less popular product commonly available at selected depots. Du-Pont Tyvek Metalised tape, 75mm x 25m = 25lm - ranging from £1.12 to £1.18 per lm

1 plus rolls @ £29.62 (£35.54 inc-VAT) per roll
5 plus rolls @ £29.30 (£35.16 inc-VAT) per roll
10 plus rolls @ £28.97 (£34.76 inc-VAT) per roll
15 plus rolls @ £28.65 (£34.38 inc-VAT) per roll
20 plus rolls @ £28.33 (£34.00 inc-VAT) per roll
25 plus rolls @ £28.01 (£33.61 inc-VAT) per roll

Tyvek AirGuard Reflective - Price and Availability Advisory

Availability: Popular product readily available throughout the country. Allow 1 - 4 working days for delivery. Always observe the 'Star Rating' indicators to assess availability.

Product availability indicators

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations


Product Applications

Tyvek AirGuard Reflective , foruse as a low emissivity vapour control layer/air barrierin roofs

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.

Further information is given in BRE report (BR 262 : 2002) Thermal insulation : avoiding the risks.

Where constructions need to comply with NHBC Standards specifiers should observe the requirements of that document.

It is essential that proper care and attention is given to maintaining the product’s integrity and continuity.

Walls in new buildings should be designed and constructed in accordance with the relevant recommendations of the UK National Annexes of BS EN 1996-1-1 : 2005 and BS EN 1996-2 : 2006.

Existing walls must be in a good state of repair with no evidence of rain penetration, damp or frost damage.

Suspended concrete and suspended timber ground floors incorporating the product must include suitable ventilation.


Product Properties

  • Highly vapour resistant
  • Airtight and water resistant
  • A composite of polypropylene, polyethylene and an aluminium foil
  • CE conformity for Plastic and rubber vapour control layer (EN 13984)
  • Superior mechanical strength
  • Reaction to Fire: Class E'
  • Reflects ca. 95% of radiant heat
  • Considerably reduces risk of condensation into the insulation
  • Considerably reduces convective heat losses

Product characteristics (nominal) ...

 Composition  A composite of polypropylene, polyethylene and an aluminium foil
 Roll Size  1.50 m x 50 m
 Roll weight 12 kg
 Mass per unit area  149 gr/ m2
 Water vapour transmission (Sd)  2000 m
 Emissivity  0.05
 CE  marking  Yes

Tyvek AirGuard Reflective - Product Attributes

DuPont AirGuard Control, air leakage vapour control layer is satisfactory for use as a vapour control layer/air barrier in new build construction and renovation, as an alternative to more traditional materials.

Further information is given in BRE report (BR 262 : 2002) Thermal insulation : avoiding the risks.

Where constructions need to comply with NHBC Standards specifiers should observe the requirements of that document.

It is essential that proper care and attention is given to maintaining the product’s integrity and continuity.

Walls in new buildings should be designed and constructed in accordance with the relevant recommendations of the UK National Annexes of BS EN 1996-1-1 : 2005 and BS EN 1996-2 : 2006.

Existing walls must be in a good state of repair with no evidence of rain penetration, damp or frost damage.

Suspended concrete and suspended timber ground floors incorporating the product must include suitable ventilation.

Practicability of installation

The product can be readily installed by operatives experienced with this type of product.

Risk of condensation

The risk of condensation occurring will depend upon the properties and vapour resistance of other materials used in the construction, the internal and external conditions, and the effectiveness of the product’s installation.

The product can contribute to meeting the relevant requirements of the national Building Regulations:
England and Wales — Requirement C2(c)
Scotland — Mandatory Standard 3.15, clauses 3.15.1 and 3.15.5
Northern Ireland — Regulation C5.

Consideration must be given in the overall installation to minimising penetrations by services. Joints at ceilings / walls must be sealed to offer significant resistance to water vapour transmission. Sealing should also be carried out in accordance with the Certificate holder’s instructions.

Air permeability

When lapped, fixed and taped correctly the product is considered to be an air barrier and will contribute to elements and junctions minimising heat loss by unplanned air infiltration. Guidance in this respect can be found in:
England and Wales — Accredited Construction Details (version 1.0)
Scotland — Accredited Construction Details (Scotland)
Northern Ireland — Accredited Construction Details (version 1.0).

Strength

The product will resist the normal loads associated with installation of the wall or floor.

Properties in relation to fire

The product will melt and shrink away from heat, but will burn in the presence of a naked flame. The product is classified in accordance with EN 13501-1 : 2007 as a Class E material.

In walls, cavity barriers should be used to satisfy the requirements of the national Building Regulations.

Maintenance

As the product is confined within a wall or floor structure and has suitable durability (see section 11), maintenance is

not required. Any damaged areas should be repaired or replaced before completion in accordance with section 15.

Durability

The product is rot proof, does not tear easily and will have a life equal to that of the building in which it is installed.


Tyvek AirGuard Control - Product Installation

DuPontTM AirGuard® Reflective can be installed either way round, but its reflective surface must always face an airspace. The preferred method is to install it with the reflective side facing into the building, then fix a standard 25mm batten over the membrane. Tyvek AirGuard laid horizontally

The membrane may be laid either vertically or horizontally as appropriate. Laps between each sheet should be 100 mm minimum and sealed with Tyvek Butyl Tape, Tyvek Tape or compressed under the batten. Tyvek AirGuard Control should be pulled taut across the surface and secured with non-ferrous felt nails or staples as follows: • Horizontal centres = max 600 mm • Vertical centres = max 300 mm

Tyvek AirGuard Control can be installed either before or after the windows and doors are fitted, provided that the membrane is sealed at the window/door frame position. Airtightness around the details can be achieved by compressing Tyvek AirGuard Control under a timber batten or by sealing to the frame with Tyvek Butyl Tape. Proprietary tapes or sealants should be used when installing the windows and doors to maintain overall airtightness.

Tyvek is laid horizontally over the entire roof surface, parallel with the eaves and secured with non-ferrous felt nails or staples as follows:

Horizontal centres = max 600 mm Vertical centres = max 300 mmTyvek AirGuard  laid horizontaly

Overlap the Tyvek sheeting by 15 cm.

Laying unsupported

Lay the Tyvek underlay directly over timber members, pull it taut to create a minimal drape.

Laying supported

Lay the Tyvek underlay directly onto timber boarding or insulation and fix timber counter battens over.

Scottish sarking

Lay the Tyvek underlay directly onto open-jointed timber boarding and fix with galvanised clout nails. Lay the slates over the Tyvek underlay in direct contact.

The overlap at the ridge should be at least 300 mm.

Overlaps, pipe penetrations, roof window junctions and other details can be further secured with Tyvek Tape.

Connections to other surfaces eg. masonry should be made with Tyvek Butyl Tape.

Any damage that occurs in Tyvek should be repaired using Tyvek Tape.Tyvek Airguard overlaps at Ridge

Fully supported

The product may be used over sarking boards of softwood (cold ventilated roofs), and either with continuous insulation or insulation placed between the rafters (warm roofs).

The product is either secured to the support with counter battens at least 12 mm thick to create a drainage and vapour dispersal space between the product and the tiles or, when using timber sarking, the traditional Scottish practice with the tiles or slates fixed directly into the boards. This space should be ventilated in accordance with BS 5250 : 2002 when using tight fitting roof covering.

Counter battens, when used are fixed with corrosion-resistant staples or galvanized clout nails as appropriate. Tiling battens are secured to the counter battens and support fixings. Alternatively, the membrane may be installed draped over counter battens, with sufficient drape to allow drainage of liquid water under the tiling battens.

Care must be taken to minimise the risk of interstitial condensation as described in section 6.5 particularly for timber sarking which may be below the dew-point for extended periods during winter months.

Unsupported Tyvek Airguard  penetrations installation

The product, when installed as an unsupported system, is fixed in the traditional method for roof tile underlays, ie draped between the rafters.

Repair

Damage to the product can be repaired easily prior to the installation of slates or tiles by replacing the damaged areas, by patching and sealing correctly. Care should be taken to ensure that the water-tightness of the roof is maintained.

Finishing

Detailing of abutments, verges and hips must be in accordance with the Certificate holder’s instructions.

The tiling and slating must be carried out in accordance with the relevant clauses of BS 5534 : 2003, BS 8000-6 : 1990 and the tile/slate manufacturer’s instructions, especially when using tightly-jointed slates or tiles.

Damage

Any damage or service breaches in Tyvek AirGuard Control caused by pipe penetrations, etc. should be made good with Tyvek Tape


Product Information and Certification

Links to manufacturer's information. Click to download in a separate browser window.

Dupont Tyvek Airguard Reflective Datasheet | Tyvek Airguard Reflective Roof BBA Certificate | Tyvek Airguard Reflective Wall BBA Certificate

Priced on Application:

Generally, Products are readily available

Estimates for large quantity orders can be priced on application. Please contact us to discuss such matters.

Contact us directly for further information: Telephone 0333 9000 989  - Email: Click Here:


Manufacturer's Contact Details

DuPont™ Tyvek

Tyvek Breather Membranes leading manufacturer of air and vapour building control layers

Unit 29, Hither Green Estate, Clevedon, North Somerset, BS21 6XU
Telephone: +44(0) 1275 337660
Facsimile: +44 (0) 1275 879 033
Email: tyvek.construction@dupont.com
Web site: www.construction.tyvek.co.uk

Our Contact Details

www.just-insulation.com

Insulation Online Limited, 27 Massetts Road, Horley, Surrey, RH6 7DQ

Telephone: 0333 9000 989

Facsimile: 0333 7000 797

Email: enquiries@just-insulation.com

Web site: www.just-insulation.com

delivering the very best products at the very best prices