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External Wall

External Wall Thermal Insulation

External Wall Insulation

At Building Materials Nationwide we have a variety of external wall insulation boards for sale. We stock boards from industry-leading brands like Kingspan and Rockwool, bringing many particular benefits and specialist applications. External wall insulation is important for reducing condensation, dampness, and heat loss, offering lower energy bills for both homeowners and businesses. Our range of external wall insulation can be used in both new builds and refurbishment projects, and we have products suited to both commercial and residential properties.

 

We stock a range of Kingspan insulation boards, perfect for external wall insulation. Kingspan Kooltherm K5 Insulation Boards offer premium performance external insulation for masonry walls. They are suitable for use behind both traditional and lightweight polymer modified renders. 

 

In addition to their excellent thermal insulation, they are also resistant to the passage of water vapour, minimising the chances of dampness and condensation. The K5 is suited to both new builds and refurbishments, with safe and easy installation, coming in a range of sizes. We also stock the Kingspan Kooltherm K15 Rainscreen insulation boards, designed for external walls with rainscreen cladding systems or masonry facade systems. Like the K5, they can be used in both new builds and refurbishments, offering strong thermal insulation and protection from water vapour. 

 

The Kingspan GreenGuard GG300 is a high-performance insulation board that can be used in wall insulation. It offers high compressive strength, with a closed cell structure that helps to resist both the absorption of groundwater and water vapour passage. They are easy to handle and install, offering effective thermal insulation.

 

We also have a range of slab insulation suitable for use in external walls. From Kingspan, the K-Roc Rainscreen Slab HD is made from high-density rock mineral, for use behind rainscreen facades, such as a rainscreen exterior wall system. It has a specialist glass tissue facing on one side, designed to help repel water vapour. These slabs can be used in both new builds and the refurbishment of existing buildings, offering an A1 reaction to fire rating. 

 

They come in a range of sizes, with thicknesses ranging from 50mm to 150mm available through our website. We also offer the Rockwool Rainscreen Duo Fire Slab, designed for use in extreme weather conditions. These are designed to slot together, offering strong thermal insulation for rainscreen exterior wall systems. They are lightweight and easy to cut to size and fit within walls. They offer high vapour resistance, reducing the risks of condensation. 


While we offer a wide range of external wall insulation at Building Materials Direct, we understand that for a specific job sometimes you will need a specific item. Our trade account holders have access to a dedicated account manager, through whom they will be able to make item requests, even for things not sold through our website.

 

Building Materials Direct aims to take the hassle out of sourcing your building supplies. Whatever you are looking for in terms of external wall insulation, we are sure to have a high-quality option available. When you open a trade account through our website, you’ll gain access to a dedicated account manager. 

 

Your dedicated account manager will be available to talk, either via phone or email, and will be there to assist you with whatever issues you may be having, or with large or unusual orders. If you need a specific external wall insulation product that you don’t see through our website, your dedicated account manager will attempt to source it for you. We aim to offer same or next day delivery whenever possible, across the UK. 

 

Sign up for a trade account through our website today to gain access to a dedicated account manager, our comprehensive range of building supplies, and our lightning fast delivery options. You’ll also be eligible to apply for 30 days of interest-free credit. You can also give us a call on 01628 674910 to speak to one of our expert team about external wall insulation or the rest of our range.

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    • 1200mm x 600mm
    • Rock mineral fibre
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    • 1200mm x 600mm
    • Rock mineral fibre
  3. Call 01628 674910 To Discuss Availability

    • 1200mm x 600mm
    • Rock mineral fibre
  4. Call 01628 674910 To Discuss Availability

    • 1200mm x 600mm
    • Rock mineral fibre
  5. Call 01628 674910 To Discuss Availability

    • 1200mm x 600mm
    • Rock mineral fibre
  6. £103.47 £124.16
  7. £150.50 £180.60
  8. £96.05 £115.26
  9. £104.92 £125.90
  10. £114.66 £137.59
  11. £91.51 £109.81

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External Wall Insulation

At Building Materials Nationwide we have a variety of external wall insulation boards for sale. We stock boards from industry-leading brands like Kingspan and Rockwool, bringing many particular benefits and specialist applications. External wall insulation is important for reducing condensation, dampness, and heat loss, offering lower energy bills for both homeowners and businesses. Our range of external wall insulation can be used in both new builds and refurbishment projects, and we have products suited to both commercial and residential properties.

 

We stock a range of Kingspan insulation boards, perfect for external wall insulation. Kingspan Kooltherm K5 Insulation Boards offer premium performance external insulation for masonry walls. They are suitable for use behind both traditional and lightweight polymer modified renders. 

 

In addition to their excellent thermal insulation, they are also resistant to the passage of water vapour, minimising the chances of dampness and condensation. The K5 is suited to both new builds and refurbishments, with safe and easy installation, coming in a range of sizes. We also stock the Kingspan Kooltherm K15 Rainscreen insulation boards, designed for external walls with rainscreen cladding systems or masonry facade systems. Like the K5, they can be used in both new builds and refurbishments, offering strong thermal insulation and protection from water vapour. 

 

The Kingspan GreenGuard GG300 is a high-performance insulation board that can be used in wall insulation. It offers high compressive strength, with a closed cell structure that helps to resist both the absorption of groundwater and water vapour passage. They are easy to handle and install, offering effective thermal insulation.

 

We also have a range of slab insulation suitable for use in external walls. From Kingspan, the K-Roc Rainscreen Slab HD is made from high-density rock mineral, for use behind rainscreen facades, such as a rainscreen exterior wall system. It has a specialist glass tissue facing on one side, designed to help repel water vapour. These slabs can be used in both new builds and the refurbishment of existing buildings, offering an A1 reaction to fire rating. 

 

They come in a range of sizes, with thicknesses ranging from 50mm to 150mm available through our website. We also offer the Rockwool Rainscreen Duo Fire Slab, designed for use in extreme weather conditions. These are designed to slot together, offering strong thermal insulation for rainscreen exterior wall systems. They are lightweight and easy to cut to size and fit within walls. They offer high vapour resistance, reducing the risks of condensation. 


While we offer a wide range of external wall insulation at Building Materials Direct, we understand that for a specific job sometimes you will need a specific item. Our trade account holders have access to a dedicated account manager, through whom they will be able to make item requests, even for things not sold through our website.

 

Building Materials Direct aims to take the hassle out of sourcing your building supplies. Whatever you are looking for in terms of external wall insulation, we are sure to have a high-quality option available. When you open a trade account through our website, you’ll gain access to a dedicated account manager. 

 

Your dedicated account manager will be available to talk, either via phone or email, and will be there to assist you with whatever issues you may be having, or with large or unusual orders. If you need a specific external wall insulation product that you don’t see through our website, your dedicated account manager will attempt to source it for you. We aim to offer same or next day delivery whenever possible, across the UK. 

 

Sign up for a trade account through our website today to gain access to a dedicated account manager, our comprehensive range of building supplies, and our lightning fast delivery options. You’ll also be eligible to apply for 30 days of interest-free credit. You can also give us a call on 01628 674910 to speak to one of our expert team about external wall insulation or the rest of our range.