About Warmseal

Warmseal has come a long way from our humble beginnings in a factory unit in 1987. We now have production facilities in four factories, employing 146 people and 80 subcontract fitters. This makes us the largest Northern-based manufacturer, supplier and installer of windows, doors,conservatories and other PVCu products.

And just recently we moved into new markets – we’ve installed a full manufacturing plant for bi folding doors, curtain walling and doors, as well as a state-of-the-art glass line to enable us to produce Warmedge Technology double-glazed units.

Because our windows and doors are manufactured on site, this means a faster turnaround, from ordering to installation.

If you live in Newcastleor anywhere in the North East and need doors or windows installed, contact us today for your free no obligation quotation.

What our customers say

Here are some testimonials from Warmseal customers who’ve experienced our superior service and high quality products for themselves.

We’re fiercely proud of the fact that 75% of our sales are through recommendations from satisfied customers or returning happy customers. Now in our 23rd year, we’ve had over 25,000 customers and we’re still going strong.

An impeccable record

We absolutely don’t believe in the hard sell. Instead, we put our resounding success and excellent reputation down to our no-hassle, no cold-call approach, and commitment to delivering a great customer experience.

We’ve even got the awards to prove it, as well as a whole host of British Standard certificates and accreditations, making Warmseal an even safer choice.

And we don’t deal in gimmicks. Making unrealistic promises and offering crazy discounts isn’t our style. When we do offer a deal, you can be assured it’s honest and only for a limited time.

We're fiercely proud of the fact that 75% of our sales are through recommendations from satisfied customers or returning happy customers. What's more, over two decades later, we're still going strong.