Insulation Slabs

(9 products)

Insulation Slabs

Insulation slabs are a flexible, semi-rigid form of insulation used across a wide range of construction applications. Unlike rigid boards, slabs are designed to be easily cut and friction-fitted into place — making them particularly well-suited for stud walls, between joists, and rafter insulation where a snug fit is essential to avoid thermal bridging.

What Are Insulation Slabs Used For?

Insulation slabs are commonly used in the following applications:

  • Stud wall insulation — friction-fitted between timber or metal studs for thermal and acoustic performance
  • Floor insulation — between joists in suspended timber floors
  • Rafter insulation — between rafters in pitched roof build-ups
  • Acoustic partitions — higher-density slabs for sound reduction between rooms

Mineral Wool Insulation Slabs

The majority of insulation slabs are manufactured from mineral wool (glass wool or rock wool). Mineral wool slabs offer excellent thermal and acoustic properties, are non-combustible, and are easy to handle and install on site. Rock wool slabs tend to have higher density and better acoustic performance, while glass wool slabs are lighter and ideal for general thermal applications.

Trade Prices & Fast Delivery

We supply insulation slabs to tradespeople and contractors across the UK, with next-day delivery available on qualifying orders. Browse our full range below, available in a variety of densities and thicknesses.

What is Slab Insulation Used For?

Slab insulation is a rigid slab made from either glass wool, rock mineral wool or sheep’s wool. It can be used in various applications while delivering great value to your projects. Slab insulation is commonly used in floors, walls, and roofs to provide thermal insulation. Cavity slab insulation is often used to help reduce noise transmissions between floors.

The Benefits of Slab Insulation

Some of the benefits of slab insulation include:

  • Thermal and acoustic insulation
  • Ideal for insulating walls, floors and roofs
  • Designed to prevent the spread of fire

Construction Megastore stock some of the world’s leading brands of slab insulation, including Rockwool and Knauf, so you can be sure that it will provide you with top-quality insulation.

Frequently Asked Questions

Can you cut slab insulation?

Yes you can. The best way to cut insulation slabs is to use a serrated edge. Avoid cutting insulation to be too tight a fit; a slightly loose fit works best, particularly for acoustic insulation.

Which insulation slabs are best?

The type of insulation slabs that are best depend on the project you are undertaking. We recommend consulting a professional with the details of your project before committing to the insulation. Our friendly team are able to assist you in whatever project you will be undertaking, as well as recommending the type of insulation you should use. Contact us today to discuss your project.

Is slab insulation fireproof?

Slab insulation is designed to revent the spread of fire, therefore it’s one of the best types of insulation to use. It also uses non-combustible materials, which makes it even better for preventing fire.

What customers say about us

We do our best to provide you the best experience ever

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Exceptional service, great product choice

Nov 15, 2023

Exceptional service. I needed insulation, this company had the brand I wanted, were able to deal with a query I had via chat and even though it was quite late in the...

A C-Ward

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I ordered SuperFoil insulation on 15th…

Nov 16, 2023

I ordered SuperFoil insulation on 15th… I ordered SuperFoil insulation on 15th November and it was delivered on 16th November. The prices are...

James

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Construction Megastore were really...

Nov 15, 2023

Construction Megastore were really helpful and friendly when I was ordering some SuperQuilt and they offer very competitive prices. Highly recommend them!

jenifercorkerhotmail.com

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