Collection: Roll Insulation
(20 products)
Roll Insulation
Roll insulation is one of the most cost-effective and widely used insulation formats in UK construction. Flexible and easy to install, insulation rolls are ideal for loft floors, between joists, rafter insulation, and stud wall applications. The roll format allows for quick installation across large areas with minimal cutting and waste.
Types of Insulation Roll
We stock roll insulation in a range of formats to suit different installation requirements:
- Combi-cut rolls — pre-scored to allow easy splitting into two narrower rolls, perfect for fitting between standard joist spacings
- Ready-cut rolls — pre-cut to a set width for fast, accurate installation without measuring
- Uncut rolls — full-width rolls for flexible use across varying joist or stud spacings
- Short length rolls — ideal for smaller projects or topping up existing insulation
Mineral Wool & Glass Wool Rolls
Most roll insulation is manufactured from mineral wool — either glass wool or rock wool. Glass wool rolls are lightweight and easy to handle, making them the most popular choice for loft insulation. Rock wool rolls offer higher density and better acoustic performance, making them well-suited to wall and floor applications. Both materials are non-combustible and contribute to fire safety.
Fast UK Delivery
All roll insulation products are available for next-day delivery across mainland UK on qualifying orders. Browse our full range below, available in a variety of thicknesses and roll widths.
Loft Roll Insulation
Our range of glass mineral wool roll insulation is designed for use in cold lofts where pitched roofs are insulated at ceiling level, which gives them a great thermal performance. Roll insulation from Construction Megastore is also non-combustible, and it has a Euroclass A1 reaction to fire classification, so it is perfect for the loft.
The roll insulation we sell is available in long lengths and short lengths to maximise on-site efficiency. The long length rolls allow for a quick and simple installation, and the short lengths provide a cost-effective option in a smaller pack size, making them efficient and lightweight for easy movement around sites.
Knauf Loft Roll Insulation
Knauf are one of the fastest growing and most respected names in insulation worldwide, and they are committed to helping their customers to meet the increasing demand for energy efficiency and sustainability in buildings. With Knauf roll insulation, you can be sure that your home is saving energy and costs.
What’s more, Knauf also have over 40 years of experience in the construction industry, which makes their products some of the best in the market. So you can keep your home insulated and know that your products are top-of-the-line and designed for longevity.
Roll Insulation and More from Construction Megastore
As well as roll insulation, Construction Megastore stocks a wide variety of insulation types, which can be used in any project. From PIR Insulation and Board Insulation, to speciality Pitched Roof Insulation and External Wall Insulation, you can find the solution you need from Construction Megastore.
Frequently Asked Questions
What areas of the home is roll insulation best for?
Roll insulation works best in lofts, unfinished walls, floors, ceilings, and anywhere that requires long and continuous insulation pieces. Our range of roll insulation is perfect for use in lofts, as their design is suited to the needs of a loft.
How long does roll insulation last?
Technically, roll insulation can last for around 80 years, however it is recommended to change it every 15-20 years. This is to stop mould and mildew forming in the insulation, which will make your loft damp and cause you problems in the long run.
How do I know if I need new insulation?
If you notice your summer and/or winter energy bills are dramatically higher than those of previous years, it could be a sign that your insulation is losing its effectiveness. Without replacement, your insulation may eventually become useless altogether, or more harmful to your health. That is why we recommend replacing your insulation every 20 or so years.
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