We are your one-stop shop for online building material supplies, with a dedicated trade service for contractors and helpful staff ready with advice and insights for DIYers.

We carry a wide range of key building materials for every step of the construction process. Buy high-quality insulation, timber, roofing and aggregate from trusted brands, such as Celotex, Knauf and Blue Circle.

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Celotex insulation board boasts easy-to-install, high-performance PIR insulation boards with impeccable cuts, making them accessible for anyone to handle. Similarly, Knauf DriTherm® 32 cavity slab insulation offers a way to elevate the thermal efficiency of structures, available at competitive trade prices. Knauf's Glass Mineral Wool loft insulation is specifically crafted for cold lofts, ensuring pitched roofs maintain optimal insulation at ceiling levels.


  • Celotex insulation
  • Isover insulation
  • Jablite insulation
  • Knauf insulation
  • Kingspan insulation
  • Recticel insulation







When it comes to building supplies online, we’ll save you time and money

Looking to order building supplies online? When you buy from DIY Building Supplies, you get access to the best quality materials at the best prices, thanks to our extensive industry contacts.

And we make it quick, easy and hassle-free to order building material supplies online with speedy delivery nationwide and helpful service that goes above and beyond.

Our number one goal is to support you by sourcing the right products at excellent prices, whether you’re working on a huge construction project or an ambitious DIY project at home. We work closely with major manufacturers and distributors to ensure you get what you need when you need it. And with account managers making things easier for our trade partners and helpful advice from our friendly team, everything you’re looking for is just a call or click away.

  • Experts in building supplies

    Need Advice?

    Any member of our knowledgeable team is more than happy to give you an expert opinion for added support.

    Talk to us 
  • Contact us for bulk building supplies

    Specific Requirements?

    We work closely with manufacturers and distributors to ensure you get what you need when you need it.

    Bulk pricing 
  • 5 star service for building materials

    "Very efficient service"

    Great company, very efficient service and communication. My query was answered promptly and goods were delivered in good condition and the quality was as described. Will use them again.

    John Cerpnjak

  • 5 star service for building materials

    "Excellent quality materials."

    Ordered everything we needed to finish off our garden and can't fault them at all. Placing the order & taking delivery was a breeze, delivery was quick, and the customer support team were super helpful. Will definitely be ordering online again in the future. Thanks again!


  • 5 star service for building materials

    "Excellent materials and service."

    Excellent materials and service. They replied back to my order quickly and delivered everything to fantastic quality. Can’t recommend enough!

    Dominic Hellicar

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