MASONS FOIL1.35MX75 White Faced Foil Installation Guide

: September 28, 2024
: MASONS

Table of Contents

FOIL1.35MX75 White Faced Foil
Specifications
Product Usage Instructions
Frequently Asked Questions (FAQ)
Read User Manual Online (PDF format)
Download This Manual (PDF format)

FOIL1.35MX75 White Faced Foil

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Specifications

Roll size: 1.35m x 56Lm = 75.6m2
Masons Product Code: FOIL1.35MX75
Tested to Duty Class: A/NZS 4200.1 Extra
Heavy
Flammability Index: 1 – low
UV Exposure: 14 days Class 1
Vapour Barrier: Yes*
Water Barrier: Water Barrier
Water Resistance: Reflective on White Faced
Side
Reflectivity: 04
Emittance white foil side: Yes*
Self-Supporting: Yes

Product Usage Instructions

Overlaps: Overlaps should be a minimum of
150mm.
Taut Installation: Pull Masons White-Faced
Foil taut when installing.
Orientation: Masons White-Faced Foil may be
installed vertically or horizontally.
Air Space: Maintain a minimum air space of
20mm between Masons White-Faced Foil and the underside of the roof
cladding.
Vapour Barrier Installation: If installed as a
vapour barrier, tape overlaps with Masons 60mm or 75mm 40 Below
Platinum flashing tape.
Natural Light Openings: Do not install under
translucent or clear natural light openings in the roof.
Fixings: Fix the product to the framing at
300mm intervals with suitable fixings for the framing type. Ensure
the fastenings are compatible with aluminium foil.
Covering: Same day cover is strongly
recommended.
Wind Conditions: Care should be taken when
installing the product in windy conditions due to the ‘sail’
effect.
Damaged Product: Any damaged product during
installation requires replacement.
Professional Installation: Masons White-Faced
Foil should be installed by a Licensed Building Practitioner.

Frequently Asked Questions (FAQ)

Is Masons White-Faced Foil suitable for use in
buildings with swimming pools or moisture generating
processes?
Masons White-Faced Foil may not be suitable for buildings
containing swimming pools, open liquid containers, or moisture
generating plant or processes. Specific measures are needed to
manage condensation and moisture for such specialized uses.
How should Masons White-Faced Foil be installed for
thermal control purposes?
When installed as a thermal reflective foil, maintain an air gap of
at least 20mm between the white reflective surface and other layers
of the roof or wall assembly. Horizontal installations should have
higher layers overlapping lower layers by at least 150mm, while
vertical installations should have laps of at least 150mm taped
with Masons 40 Below Platinum tape.

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WHITE-FACED FOIL
DESIGN AND INSTALLATION GUIDE
V1.0 June 2024

1. GENERAL

Typical installation use

1.1 DESCRIPTION

Masons White-Faced Foil is a synthetic non-woven and

AND DESIGN

aluminium foil composite underlay designed to be used on the

CONSIDERATIONS interior of commercial or industrial buildings where a vapour

barrier with a white light reflective surface is required. It is

typically installed with the white reflective foil surface visible

to the interior of the building.

The product may also be used as a reflective foil as part of a thermal control layer design for roof or wall. When installed as a thermal reflective foil an air gap of no less than 20 mm must be maintained between the white reflective surface and the cladding, insulation, or other layers of the roof or wall assembly.

The product is not absorbent or breathable and should not be considered a condensation control layer, the building designer must allow for sufficient passive and active ventilation to control condensation.

Special care must be taken when considering design of buildings containing swimming pools, open liquid containers, or moisture generating plant or processes. Such building uses need specific measures to manage condensation and moisture generated within the building. Masons White-Faced Foil may not be suitable for these specialised uses.

Where the designer intends the product to be a secondary drainage plane or line of defence against external moisture, then install horizontally with higher layers over lapping lower layers by at least 150mm. For Vertical installation, laps should be at least 150mm and taped with Masons 40 Below Platinum 60mm or 75mm tape. Support any such design with hexagonal or safety mesh.

info@mpb.co.nz 0800 522 533 www.mpb.co.nz

1

White-Faced Foil Design and Installation Guide
V1.0 June 2024

Masons White-Faced Foil Roll size Masons Product Code Tested to Duty Class Flammability Index UV exposure Water Barrier Water resistance Reflectivity Emittance white foil side Self-Supporting

1.35m x 56Lm=75.6m2 FOIL1.35MX75 A/NZS 4200.1 Extra Heavy 1- low 14 days Class 1 Vapour Barrier Water Barrier Reflective on White Faced Side 04 Yes*

1.2 INSTALLATION

Overlaps should be a minimum of 150mm. > Pull Masons White-Faced Foil taut when installing. > Masons White-Faced Foil may be installed vertically
or horizontally.
Maintain a minimum air space of 20 mm between Masons White-Faced Foil and the underside of the roof cladding
If installed as a vapour barrier tape overlaps with Masons 60mm or 75mm 40 Below Platinum flashing tape.
Do not install under translucent or clear natural light openings in the roof.
Fix the product to the framing at 300mm intervals with suitable fixings for the framing type. See the NZ MRM code of practice regarding foils, and ASNZ 4200.2.1914. Ensure the fastenings are compatible with aluminium foil.
Same day cover is strongly recommended. > Care should be taken when installing the product in windy
conditions due to the `sail’ effect.
Any damaged product during installation requires replacement
Masons White-Faced Foil should be installed by a Licensed Building Practitioner

*Masons White-Faced Foil is Self-Supporting up to a span of 1200 mm however Masons recommends the product is supported by steel hexagonal or safety mesh that complies with Australian/NZ Standards. Bayonet hexagonal or safety mesh is recommended.

info@mpb.co.nz 0800 522 533 www.mpb.co.nz

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White-Faced Foil Design and Installation Guide
V1.0 June 2024

1.3 LIMITATIONS