Thermall Reflective Insulation 7.5m 600mm 4mm

Product rating
4.5 out of 5 stars
Product code:



£1.87 per M

Thermall Reflective Insulation 7.5m 600mm 4mm

Product code:
Thermall Reflective Insulation 7.5m 600mm 4mm



£1.87 per M

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Product Details

Product Information

ThisReflective insulation;Use on internal walls & floors and in lofts

  • Suitable for use in a variety of locations around the house
  • Guarantee

Features and Benefits

  • Helps to preserve heat by reflecting it back into the room
  • Flexible and easy to install
  • Can be used in many areas of the house, as well as garages and sheds
  • Easily cut to size
  • Reflective insulation
  • Insulation can make your home more energy efficient - and feel warmer.

Help & Advice

Loft Insulation Calculator

Your requirements

1. the dimensions of the loft space to be insulated in metres:
2. Current loft insulation thickness in mm:

Your results

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  • 00 square metres
  • required

This calculation is based on the dimensions you have entered for your loft space, and the current loft insulation thickness.

How to guides

How to lay loft floor insulation

How to lay loft floor insulation

Insulating the loft can seem like an unappealing job, but saving money on your utility bills always sounds good. If your home’s without loft insulation, you could be losing up to a quarter of your home’s heat through your roof*. This makes insulating your loft one of the most effective ways to reduce heating bills and be more energy-efficient. And even if you already have some existing insulation, it’s key to have the optimum amount for it to be truly effective.

In this guide, we’ll walk you through everything you need to know to lay loft floor insulation. Also known as ‘cold roof’ insulation, insulation is fitted to the floor of the loft trapping the heat in the main part of the house and away from the loft. This is ideal if you don’t use your loft at all, or only for the storage of non-perishable items.

The alternative is ceiling, or ‘warm roof’ insulation. This is fitted above the rafters and keeps the heat in the loft. It uses different types of insulation to loft floor and is used in loft conversions to make the space into a habitable living area. This isn’t explored in this article.

Our guide includes step-by-step advice on how to:

  • Work out how much existing loft floor insulation you already have
  • Confirm how much new insulation you need
  • Lay, and cut, two different types of loft floor insulation – rolls of insulation and insulated loft floor boards
  • Lay loft floor insulation around cables and recessed downlights.

Let’s get started…

"Rolls of loft insulation and tools for loft insulation project in loft" *Source: Energy Saving Trust, 2017.

Reviews 4.5  out of 5 stars

Thermall Reflective Insulation 7.5m 600mm 4mm is rated 4.6 out of 5 by 5.
  • y_2018, m_5, d_25, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_GB, sid_5012924043853, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy
Rated 5 out of 5 by from Surprisingly excellent result. I purchased this product to insulate our up and over garage door as it is an integrated garage and we have a pedestrian door in to our hallway. Our hallway was always cold, no matter what time of year, there was a noticeable 5 - 7 degrees difference from downstairs in our hallway to upstairs in our living room, we live in a three storey, new townhouse, so I had a little project to do to try and improve the situation. Firstly I added draught proofing to the garage to hallway door, to work with the existing factory fitted brush system in place, this made a slight difference for the better. I then packed the open edges of the Garador garage door with expanded neoprene foam 11mm, this made a lot of difference for the better and now that has been done I have used this product to fully insulate the whole door panel, with just a cut out for the internal lock and door opening knob, sealing it down with the Aluminium Thermal tape recommended. WOW, what a vast difference this has made to the complete job, we now only have a 1 - 2 degree difference downstairs in the hallway at any given time, making a huge cost saving on our gas bill, as the central heating is now more off than on. We know this as we have two thermostats in the house as the one in the hallway is for the ground floor and first floor and the second floor works independently from the one downstairs. Incidentally, our garage door is North facing, now it is neither hot or cold in the garage, the temperature stays steady, there is not any feel of damp in the garage and it is now a pleasure to mess about in., as well as gaining a tremendous result. If you want to insulate your garage door, do this and use this product, it is worth every penny and far cheaper than buying an insulated garage door and having it fitted.
Date published: 2017-07-31
Rated 5 out of 5 by from Unusual? use for this product We garden. We have a greenhouse. i look at Youtube. What has this got to do with this item? On Youtube I saw a video of a cheap growlight system with a frame made from 25mm plastic waterpipe. Suspended was a light. I wanted to maximise the light and considered aluminium foil as a reflector hung from a daylight fluorescent fitting, but I was concerned about thermal insulation and integral strength. This product was just the job. Cut to length and laid side by side the pieces were joined with silver tape (B&Q) and draped over and under, completely around the system. Ends are held with small clips, I had also considered using velcro (the stick and stick version). With a small heater inside it has worked well, a max-min thermometer showed temperatures at least in the high teems, and germination of chili peppers (requiring mid 20's) has been satisfactory. The seedling have been potted on, and have been left in the lighted "tent". Growth compared to seedlings grown as normal in the unheated greenhouse has been most satisfactory. PS for years I have also used this for pasting on the wall behind radiators - but who would be interested in that?
Date published: 2017-02-21
Rated 5 out of 5 by from Good quality - but not cheap! Very Good but not cheap! It has good thickness and depth unlike cheaper ones and is easy to handle. Needed to insulate wall.
Date published: 2017-01-18
Rated 4 out of 5 by from Good job So far so good. The small garden office we used the insulation on seems to retain the heat after we get it hested to a good temperature.
Date published: 2018-02-06
Rated 4 out of 5 by from Fire safe? Is this product safe to use to insulate a roof from a fire safety point of view? I have bought 3 rolls to insulate my conservatory roof behind the usual blinds and then wondered if this was safe if there should be a fire. Hopefully the fire safety will have been tested as otherwise the product is just as I expected. I'm using the review form as I cannot find any email contact details
Date published: 2018-01-06
  • y_2018, m_5, d_25, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_GB, sid_5012924043853, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy

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