About us
With over 50 years of family-owned expertise in the insulation industry, Wray-Tech Holdings introduced National Insulation Supplies (NIS) in 2022 to provide a dedicated eCommerce platform for insulation products. We exist to make sourcing insulation simple, cost-effective, and reliable for both trade contractors and DIY enthusiasts across the UK.
Our mission is clear: to deliver premium insulation products with exceptional service, expert guidance, and fast nationwide delivery, ensuring every project gets the right materials at the right time.
As part of the Wray-Tech Supplies family, NIS benefits from decades of technical experience and deep industry relationships, ensuring our customers get not only the best products but also the professional insight that drives real project success.
Our People, Knowledge & Qualifications
Our knowledgeable team provides expert advice on insulation selection and installation, guiding customers from loft rolls and PIR boards to acoustic and fire protection insulation.
Our dedicated customer support team is always on hand to track deliveries, find cost-effective alternatives, and ensure the right insulation for every project. All staff is real people with hands-on experience, ready to answer questions and provide tailored support every step of the way.
Awards & Partnerships
National Insulation Supplies collaborates with leading manufacturers such as Kingspan, Celotex, Rockwool, Knauf, and Recticel, ensuring our customers have access to top-quality, trusted products.
We are proud of our strong industry relationships, which reflect our ongoing commitment to innovation, quality, and customer satisfaction.
Our Associations and Partnerships demonstrate our dedication to excellence and our mission to continually enhance the customer experience.
Let customers speak for us
Knauf Loft Roll 44 is a brilliant choice for anyone looking to improve their home’s insulation quickly and cost-effectively. The rolls are lightweight, easy to handle, and cut far cleaner than many other brands I’ve used. Once installed, the acoustic and thermal difference is noticeable almost immediately — rooms feel warmer, and draughts are reduced.
The product fluffs up nicely after unrolling and fills gaps well, giving excellent coverage with no fuss. Being made from ECOSE® Technology, it also has far less itch and smell compared to older-style fiberglass insulation, making the installation much more comfortable.
Overall, Knauf Loft Roll 44 delivers strong thermal performance, is simple to fit even for DIYers, and offers great value for money. Highly recommended for topping up older loft insulation or completing a full retrofit.
Great product at a good price
Good price on product. Delivered next day by third party courier. Kept informed of delivery status.
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Delivered promptly and all in order
Great product for a recent project, price was very competitive for such a renowned insulation material. Would highly recommend.
Easy company to deal with great range of insulation products for my needs
Good company to deal with, from ordering to receiving materials all went well, would certainly use in future.
Great price great service will use again
great
Delivery driver went above and beyond.
Fabulous insulation material. Easy to cut to size / shape (50mm easier than 100mm with scissors). Lovely to handle with no dust or irritation.
The insulation was delivered a couple of days after the order. Although I was not in when the driver delivered the boards the driver followed the notes I'd left online and placed them exactly where requested on the driveway.