Sealtight Windows NE Ltd

Sealtight Windows NE Ltd Manufacturer and Installer of Kommerling UPVC Windows, Doors, Conservatories and Orangeries We pride ourselves on our no-pressure sales approach.

Sealtight Windows (NE) Ltd, manufacture and install high quality UPVC Windows, Doors, Conservatories, Orangeries, and Porches in all styles and colours available. Operating from the same manufacturing and showroom facility for over 17 years, we are a family run business that places the customer first. No job is too big or too small, and we offer a full manufacturing and installation service from d

esign and build through to final completion. We have a fantastic showroom facility displaying our unique traditional Orangery, Conservatories, Solidor Composite doors and Kommerling high performance UPVC windows in a range of colours and styles. On-site we also have our own glass shop allowing us to manufacture our own double-glazed units, giving us greater control over quality and lead times. In addition we can manufacture decorative leaded units, georgian bar and also replica stained glass. Our Sales Manager is happy to provide a free no-obligation quotation, and leave it with you. If you wish to go ahead with the order, then you call us back. So for a local, family owned business, offering great products and service with no pressure, you need look no further than Sealtight Windows (NE) Ltd.

Summer means more time at home. Do your windows do it justice?Longer days, more light, more time spent looking out at th...
17/06/2026

Summer means more time at home. Do your windows do it justice?

Longer days, more light, more time spent looking out at the garden. June has a way of making you notice things about your home you'd ignored all winter.

If your windows are looking tired, discoloured or struggling to open and close, there's never a better time to get them replaced.

Free survey. No obligation. Manufactured and installed by our own Teesside team.

Call us: 01642 455133 | sealtightwindows.co.uk

Project spotlight: Orangery with roof lanternOne of our favourite recent builds, a beautiful orangery with a central roo...
15/06/2026

Project spotlight: Orangery with roof lantern

One of our favourite recent builds, a beautiful orangery with a central roof lantern, designed to flood the kitchen-diner extension with natural light all day long.

Every element handled by our own Teesside team: design, planning, brickwork, glazing, doors and finishing.

If you've been thinking about an orangery this summer, now's the time to start the conversation.

Find out more: sealtightwindows.co.uk/orangeries/
Call us: 01642 455133

Tired of your conservatory being too hot to use? Here's the fix.A polycarbonate roof can turn your conservatory into a g...
13/06/2026

Tired of your conservatory being too hot to use? Here's the fix.

A polycarbonate roof can turn your conservatory into a greenhouse by mid-June.

The Ultraframe LivinROOF solves it. Insulated solid panels keep temperatures comfortable, while optional glazed sections keep the room light and bright.

Installed in 3-4 days. No rebuild needed. Transformed space.

Call us: 01642 455133 | [email protected] | sealtightwindows.co.uk/conservatories

White or Grey? The great window debate...White is timeless. Anthracite Grey is having a serious moment.Both look brillia...
12/06/2026

White or Grey? The great window debate...

White is timeless. Anthracite Grey is having a serious moment.

Both look brilliant on the right home and when you choose Kommerling, coloured UPVC windows come with a 10-year guarantee and white UPVC windows come with a 25-year guarantee.

Which would you go for? Drop your answer below

See both in our showroom, no appointment needed.
Unit 16-17 Tees Court, Middlesbrough | 01642 455133

11/06/2026

Thinking about extending your home this summer? Come and see what's possible.

We have orangery and conservatory displays in our Teesside showroom so you can see the quality of our Kommerling windows, doors and glazing for real before you commit to anything.

Whether you're drawn to the light and space of a conservatory, or the character and solidity of an orangery with a roof lantern, our team will talk you through every option. No pressure. No jargon. Just honest advice from people who've been doing this for over 20 years.

Pop in and see us. No appointment needed.

📍 Unit 16-17 Tees Court, Wallis Road, Middlesbrough TS6 6DX
🕗 Monday to Friday, 8am to 4:30pm
📞 01642 455133 | sealtightwindows.co.uk

An orangery in June is something else entirely.Roof lantern open to the sky. Doors pushed back to the garden. The smell ...
07/06/2026

An orangery in June is something else entirely.

Roof lantern open to the sky. Doors pushed back to the garden. The smell of summer drifting in.

An orangery from Sealtight is built to be lived in, all year, but especially in June. Bespoke brickwork, Kommerling windows and doors, all designed around how you want to use the space.

Come and see our orangery display in the showroom.

Call us: 01642 455133 | sealtightwindows.co.uk/orangeries

Your conservatory should be the best room in the house this summer 🌷In June the garden looks its best, and a conservator...
05/06/2026

Your conservatory should be the best room in the house this summer 🌷

In June the garden looks its best, and a conservatory should bring that view inside.

Whether you want a classic Victorian style, a lean-to for a smaller space, or a full LivinROOF conversion that works all year round, we'll design and build it to fit your home perfectly.

All conservatories are manufactured and installed by our own Teesside team.

Book a free design visit: 01642 455133 | sealtightwindows.co.uk/conservatories

Open the door to summer ☀️June is when your front door really earns its keep, visitors arriving for BBQs, kids in and ou...
03/06/2026

Open the door to summer ☀️

June is when your front door really earns its keep, visitors arriving for BBQs, kids in and out all day, neighbours noticing the kerb appeal.

A Solidor composite door gives you security, style and a finish that won't fade, warp or discolour no matter what the British summer throws at it.

Available in 20+ colours. Designed by you. Fitted by us.

Design yours at sealtightwindows.co.uk/solidor
Call us: 01642 455133

⭐ Another happy customer! Conservatory installation - 10/10!"We had a conservatory supplied and installed by Sealtight. ...
29/05/2026

⭐ Another happy customer! Conservatory installation - 10/10!
"We had a conservatory supplied and installed by Sealtight. All the labourers were brilliant. Good time keeping, cleaned up their mess daily.
Positive experience from start to finish from Richard and his team. We now have a lovely home office we can use.
10/10"

We're proud to have been manufacturing and installing conservatories for over 20 years. We have our own fully qualified tradesmen, no subcontractors. Get in touch if you're ready to upgrade.
📞 01642 455133 | sealtightwindows.co.uk

27/05/2026

New windows can add value to your home and here's how much... 🏠

According to Checkatrade, replacing old windows can add up to 10% to your property value and significantly improve its EPC rating.

For a home in Teesside worth £180,000, that's potentially £18,000 added for a fraction of the cost.

Our Kommerling A-rated windows improve thermal efficiency, reduce noise and make your home more attractive to buyers whether you're selling now or in five years.

Get a free no-obligation quote.

📞 01642 455133 | sealtightwindows.co.uk

Address

16/17 Tees Court, Wallis Road, Skipper Lane
Middlesbrough
TS66DX

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+441642455133

Website

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