​DOWNLOAD CEILING INSTALL GUIDE »

GENERAL

• Ensure a 25mm gap between Terra Lana and any building surface that is, or may become, damp
• Terra Lana can easily be ripped to size across its width. If you need to cut lengthwise, use shears or large scissors.

NEW CEILINGS

• Terra Lana rolls are usually ideal; segments can also be used
• Roll out the batting between the joists, ensuring an even, snug fit
• If using segments ensure there are no gaps around the outer edges of the segments and no folds in the segments themselves. Where segments are butted together there should be no gaps between them.
• Always allow a 25mm gap below any roofing membrane
• If fitting from below, before the ceiling liner is installed, make sure Terra Lana is well supported with battens or strapping
• Cover ALL the ceiling. Terra Lana should reach to at least the middle of the top plate of the exterior wall, and cover any internal walls.

PITCHED OR SKILLION ROOFS

• Terra Lana is usually fitted from below before the ceiling lining is in place
• Use pre-cut widths to ensure a snug fit
• Where there are no battens or ceiling joists, staple Terra Lana directly to the rafters
• Always allow a 25mm gap between Terra Lana and the roof underlay or roofing material.

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TERRA LANA DOUBLE LAYER SYSTEM

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• A double layer system increases the insulation (R-value) still further*.
• Fit the first layer-usually 430mm wide
• Lay the second layer in 1m wide strips, perpendicular to the bottom layer
• If this isn’t possible, lay the top layer in the same direction as the bottom, making sure that the joins don’t coincide
• Installation of a Terra Lana double layer system should be read in conjunction with instructions for “New ceilings.”

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* Terra Lana double layer R3.8 system is more effective than other higher R-value products laid between joists.

RETROFITTING EXISTING CEILINGS

• Terra Lana top-up products are designed to be installed over timber structures, perpendicular to the joists, rafters or trusses (check the product label to ensure you have the right product)
• Make sure existing insulation is level and dry. Refit any displaced areas
• Begin installing Terra Lana at the furthest point from your ceiling access
• Use a pole to push Terra Lana into hard-to-reach corners, and over the exterior wall perimeter
• Cover recessed areas with a piece of timber strong enough to stand on then insulate over the top of this.

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​DOWNLOAD UNDERFLOOR INSTALL GUIDE »

DOWNLOAD UNDERFLOOR INSTALL GUIDE »

BEFORE OR AFTER?

Depending on whether you are installing insulation before or after the house has finished being built, underfloor insulation can be installed either from above (before the flooring has been fitted) or from below. The method show below is for installing from beneath the floor.

PROCEDURE

• Distribute the bags of product to the areas to be covered. Leave them bagged
• Split the bags, or pull the Terra Lana from its outers. Run the Terra Lana in a continuous length between the floor joists and over the main bearers. Make sure the hard layer is towards the ground

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Terra Lana is designed to friction fit most joist spacings. Push the Terra Lana lightly up to the bottom of the floorboards, while still retaining its loft. Staple through the bottom layer between 50mm and 80mm from the top of the joist.  The idea is to allow the insulation enough space to loft to its designed thickness but still have the insulation in contact with the underside of the floor.  At the end of the joists the stapling height should be closer 50mm below the top of the joist to ensure no air can circulate above the insulation, in the unlikely event a gap should open up.

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• Repeat this every 25 to 50cm, while keeping the Terra Lana firm and tensioned. Do not staple directly to the underside of the floor - this will compress Terra Lana and reduce its insulating properties. (NB: staples should only be fixed through the engineered polyester outer layer).
• Where the floor joist spacings vary, measure the gap by holding Terra Lana up to the joist and simply rip across the roll to size, push into place and staple. Repeat until the joist row is complete . (NB: 1m wide rolls can be supplied to make this process easier)

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• Clearances: Leave a clear 100mm gap around waste pipes that penetrate through the floor
• On completion, remove all plastic bags and leftover material from the underfloor space
• Staple a Product Information and Identification Certificate adjacent to the underfloor access for future reference.

​DOWNLOAD CYLINDER WRAP INSTALL GUIDE »

DOWNLOAD CYLINDER WRAP INSTALL GUIDE »

1  Loosely fit the wrap, foil side outwards, around the cylinder. In tight areas the wrap will flatten to 15mm.

2 Where necessary cut a slit from the edge of the wrap to slide the wrap over piping then tape the slit.

3 Pull the edges of the wrap together so they just touch. Do not pull them together tightly as the wool in the wrap needs room to regain it’s natural loft after  being compressed in the packaging.

4 If the wrap is larger than the cylinder you can either:

    a. Trim the edges. DO NOT trim the edges with the fold backs (flaps).

    b. Overlap the edges.

5 Tape the edges in place using the fold back.

6 Pull the wrap together at the top like a Christmas cracker and fix around the header pipe with a cable tie. You can push the wrap flat onto the top of the cylinder to make it easier to gather the foil and tie it.

7 Wrap the woollen pipe lagging supplied around the pipe carrying hot water from the cylinder. Do this in a coil like manner ensuring a 50% overlap. Secure both ends of the lagging with PVC tape or cable ties.

​DOWNLOAD PIPE LAGGING INSTALL GUIDE »

DOWNLOAD PIPE LAGGING INSTALL GUIDE »

Wind the Terra Lana Woollen around the pipe in a coil like manner ensuring a 50% overlap.

Secure both ends of the lagging with PVC tape or cable ties.

No protective clothing, gloves or mask required.

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Where the lagging is exposed to direct sunlight it must be protected by a UV resistant wrapping.

Where exposed to external moisture lagging should be protected by a waterproof membrane.

When installed as shown, Terra Lana Wool lagging will comply with the minimum requirements of N.Z.B.C Clause G12, Water Supplies.