Metroll Newcastle - Polyair

Starting at the gutter line roll out the Polyair insulation across the rafters, ensure the anti-glare or white surface is acing up.
Fix the Polyair insulation with high quality rust resistant staples or clouts.
Repeat step 1 and allow at least 150mm overlap on joints or 50mm when taping the product together.
Set out and fix battens nominal 38mm according to tile manufacturers instructions.

Residential Metal Roofs

Ensure battens 50mm nominal are set out and fixed securely to rafters.
Roll out the Polyair insulation and lay in the same direction as the metal sheet over the battens.
Allow 50mm for overlap per sheet, when joints are taped.
Staple-fix the sheets every four battens.
Fix metal sheeting as per manufactures recommendations.

Commercial & Industrial Application Metal Roofs

Due to roof heights safety measures as required before commencing work must be taken.
Please ensure the wearing of harness and other safety methods are carried out before commencing the work.
Roll out Polyair at right angles over Purlins allowing sagging, so supported by mesh, if mesh is used.
Overlap each sheet by 50mm and apply foil tape.
Apply tape by hand first and use a flat edge surface applying pressure to.
Fix sheet metal with screws through insulation into Purlins.

Residential Roofs/Ceilings Retrofit

Roll out Polyair over ceiling joists, ensuring maximum coverage of the ceiling area.
Overlap each sheet by 100mm, trim as required around truss supports and tape off.
Don’t tape sheets together, as a ceiling inspection may be required in the future.

Commercial Metal Roofing Retrofit

Roll out Polyair as required.
Fix the sheet using 20mm tek screws to underside of Purlins, every 600mm along the length and width of the sheet into the girts where applicable.
Cut the sheets where the girt meets the purlin tape off and repeat step 1. Taped butt joints are recommended for the best result.

Walls - Timber Frames, Brick Veneer

Roll out Polyair loosely with anti glare surface facing out across the outside of the frame.
Loosely fix with staples or adhesive tape, allow a 50mm overlap on top sheet over bottom sheet.
Tape top sheet to bottom sheet on all ways.
Carefully trim around window and door jams then tape off by hand.
Gently push the insulation inwards in between the studs, forming a dish.
Securely fix sheets to frame work with rust proof staples or clouts.
Tape off all bottom, top and corner edges to frame.

Walls - Timber Frame, Cladded Wall

Roll out Polyair loosely with anti glare surface facing out on the outside of the frame.
Loosely fix with staples or adhesive tape, allow a 50mm overlap off top sheet over bottom sheet.
Tape top sheet to bottom sheet on all walls.
Carefully trim around window and door jams so material abuts against these.
Fix battens 50mm nominal at right angles to frame, and clad.
Note - With these types of installations it may be necessary to perforate the bubbles of the material on the outside face of the studs to ensure a positive fixing.

Walls - Double Brick Cavity (50mm)

Install brick ties into wall approximately 1-2 per Metre Square.
Slide plastic packers over one side of the brick ties.
Roll out Polyair insulation and rest up against brick ties.
Locate position of brick ties behind insulation and put a horizontal cut at that position, push brick tie through the cut.
Tape off bottom of sheet over flashing.
Repeat this process on the upper wall, allow a 50mm overlap top sheet to bottom, and tape off securely.

Floors - Timber Sheet (T & G)

Roll out Polyair at right angles to joist, allow a 150mm overhang each side.
Fix Polyair to the joist with rust proof staples or equivalent; ensure the product is dished in between each joist to achieve a reflective air space.
Repeat step 1 and allow a 150mm overlap of each sheet or 50mm if sheets are to be taped.
Repeat steps 1 and 2 till floor frame is covered.
Depending on the type of floor to be installed the insulation may have to be perforated along each joist, to ensure a positive fix, for the flooring material.
Overhanging flaps can be folded up wall and floor junctions and taped off to prevent moisture migration.

Under Slab Applications

Hilt X-SW 30 Soft Washer Membrane Fasteners. Fasteners require gas-fired gun.

For best looking results sheets should be butt joined and taped.
Roll out Polyair sheet, support sheet up against slab surface, ensure sheet is square to the installation area.
Fasten the sheet with X-SW30 nails in the middle approximately 1 meter from the end.
Repeat step 3 working down the length of the sheet.
Temporarily support the edge of the sheet with tape to prevent sag.
Roll out the second sheet and support to slab, align the edges to the first sheet and attach using Hilti fasteners.
Apply foil tape to the butt joint where the two sheet edges meet, using a flat edge tool. When taping ensures an equal coverage over the joint is maintained.
The installation should achieve a 20mm reflective air space between the upper side of the insulation and underside of the slab.

Acoustic Applications

Rondo Mounts - STWC (timber) - STSL/STTI - concrete Walls & Ceilings.

Others may do the installation of acoustic mounts and furring channels; acoustic mounts have to be installed prior to the Polyair insulation.
Install acoustic mounts to specified distance apart, without the furring channel clip attached.
Roll out Polyair Insulation, ensure roll is level and push insulation over spike or screw of the acoustic mount so it penetrates through the material.
Butt join and tape off where required, using a squeegee or straight edge tool.
Attach furring channel clip, and adjust the threaded through bolt to create a gap between the wall and insulation approximately 20mm.
Install furring channel.
Storage
Rolls must be stored undercover in an upright position prior to installation.