Home / General Install Guidelines

General Install Guidelines

Installing Low-E Insulation is relatively simple and it can be done by any competent DIY enthusiast or trades person. We have put this blog together to help you through our basic general install guidelines.

There are more details including installations methods for roofs, walls, floors, junctions and opening detailed in our blog Roofs, Walls, Floors – Junctions and Openings opposite.

If you have any questions about installing any of our products or any application please get in touch.

No multiple layers, no frayed edges, no dragging on screws, Low-E® will save you 50% on your install time.

Some of the most common questions we get asked concerning general insulation steps are;

  • What you should know before you start insulating?
  • What precautions do you need to know before insulating?
  • Airspaces when installing insulation
  • Installing insulation with joining rolls
  • Installing insulation with taping rolls

What you should know before you start insulating?

There is no safety equipment or protective clothing required to handle or install Low-E Insulation. A staple gun, utility knife and a roll of Low-E Seam Tape are the only items required for general installation.

Low-E Insulation can be installed with either side facing out and can be nailed or screwed through to fix in place and can be installed with either side facing out. Our unique composition mean Low-E will not drag on screws and will self-seal around any fixings that puncture it during installation.

What precautions do you need to know before insulating?

Aluminium is an electrical conductor. Please use caution when working around electrical sources, including overhead power lines.

Low-E should be stored on a flat dry surface in its bag, out of direct sunlight, until it is ready for installation.

Never interfere with the designed ventilation of the building when installing Low-E Insulation.

Although Low-E Insulation products have an excellent fire rating, it is recommended that they should not be exposed to open flames or ignition sources of sufficient intensity during shipment, storage, or installation. 50mm of clearance should be left around heat producing flues or light fittings.

To maintain Class A/ Class 1 Fire Rating, all seams that are left exposed to conditioned spaces MUST be sealed using Low-E Seam Tape.

Install any additional insulation in accordance with the manufacturers’ guidelines. Always build in accordance with applicable standards.

When using Low-E outdoors be aware of glare from the sun; protect your eyes and skin. Aluminium surfaces should not be installed in direct contact with uncured concrete or any uncoated raw metals. Do not walk on Low-E when it is cut before installation. If you have any concerns about condensation risk, please contact your local building control officer for advice.

Airspaces when installing insulation

Airspaces form an important part of the system U-value, when using Low-E Insulation. If you omit or change the size of an airspace you may change the system performance. There are numerous other ways of creating airspaces when installing Low-E Insulation. If you have an application for Low-E Insulation and want to find a suitable way of fitting, please contact us for details.

The simplest and most common way of creating an airspace beside Low-E Insulation is by counter battening with a 2″ x 1″ timber batten but there are dozens of ways of doing this, especially in general construction.

Airspaces can be formed in numerous ways but we find a counter batten is the easiest way in general construction

Alternatively Low-E can be fitted loose and draped into the adjacent cavity to create an airspace

Low-E can also be recessed into an opening and stapled into place to create an airspace

Installing insulation with joining rolls

Overlapping Rolls

Simply overlap the adjoining rolls by 50mm-100mm and seal using Low-E Seam Tape. When you are overlapping rolls, it is important to ensure the overlap does not allow water to get into the structural space.

Butt Joining

Ensure the area is clean and dry. Place the two pieces of insulation you want to join together on a clean, flat surface and butt them up against each other. Seal the join using Low-E Seam Tape. Turn the insulation over and repeat on the other side.

In Situ

Overlap the new run of Low-E with the run which is already in place (over the closest support batten) and start fitting the new run. Once the new run is secured, cut along the centre of the support batten where the two runs overlap and remove the waste.

Place double-sided tape on both of support battens and remove the paper backing from the double-sided tape. Put the replacement piece into place.

Apply Low-E Seam Tape to the face of the seams by firmly pressing it down on the tape while running the length of the join. Once complete, the Low-E Seam Tape will blend in perfectly with the insulation.

Joining Ezy Seal Edge

The adhesive strip that runs along one side of the roll will be used to bond to the next length. Ensure the rolls are running level with each other.

Fold back the insulated tab on the edge of the of Low-E EZ and butt it together with the tab on the next roll.

Joining Ezy Seal edge General Install Guidelines

Peel off the release paper and press the two insulated tabs tightly together. For best appearance and easiest installation, it is advisable to complete this approximately one at a time. Staple the seam every 200-300mm. If the EZ strip is not sticking because of moisture in the air, staple every 100 200mm and seal using Low-E Seam Tape.

To maintain Class A/ Class 1 Fire Rating, all seams that are left exposed to conditioned spaces MUST be sealed using Low-E Seam Tape.

Installing insulation with taping rolls

Low-E Seam Tape

Always tape Low-E when surfaces are clean and dry. Low-E should be taped at junctions with walls, windows, and doors. When joining or replacing sections of Low-E, Low-E Seam Tape should always be used. All seams that are exposed to conditioned spaces must be taped with Low-E Seam Tape. Use a utility knife or a pair of scissors to cut the Low-E Seam Tape. Tearing the tape may stretch it.

If it happens (and occasionally it does) that material gets damaged on site after it has been installed. Do not worry, just cut a replacement piece of Low-E slightly bigger than the damaged section. Place the replacement piece over the damaged area and cut through the two piece at the same time.

Remove the excess material and the damaged piece of Low-E. Seal around the edge of the replacement piece using Low-E Seam Tape.

Apply Low-E Seam Tape to the face of the seams. Once complete, the Low-E Seam Tape will blend in perfectly with the insulation.

If you are replacing a piece of insulation in a wall, roof or floor application, we recommend cutting out a piece of insulation along the nearest support battens. This will make it easier to apply the seam tape.

Want to get hands on with our products?

Request a FREE sample

Request a free sample

Don’t just take our word for it.

See what our customers think about our Foil insulation and the reasons why you should be using it.

“What can I say? The insulate was quick clean and easy to install. Our original loft conversion was done over 20 years ago, and it has gone from being the hottest room in the summer, and the coldest room in the winter, to being our master bedroom and the most comfortable room in the house."

Wendy R

Stockport, UK

We use both the vapour and the breathable versions of Low-E Insulation. We’ve tried using other foil insulation products, but they can be time-consuming and difficult to install. Low-E is so easy to work with, we just wouldn’t use anything else.

G Stone

Stroud, UK

“I’ve been specifying the use of Low-E Insulation for the last 5 years. It’s a fantastic product. It achieves better values in smaller spaces than other materials. Best of all, Building Control love it and so do our contractors.”

A Brown

Portsmouth, UK

“We’re part of the Insta Group and have been installing loft insulation in Manchester for over 10 years. I’ve never come across a product as good as Low-E. It quick clean and easy to use. Our customers are delighted with it. I’ve been so impressed with it that I’ve re-insulated my own loft.”

K Rabin

Manchester, UK

“The installation was quick clean and efficient. The results are amazing. Our conservatory is comfortable even in these record-breaking summer temperatures.”

Mrs Staff

Southampton, UK

“Low-E was a critical part of our insulation build up. Without it, we would not have been able to meet our brief. The contractor was very happy with it because it was quick, clean and easy to install”

Ms J Long