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.

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

The hardware makes the door 🖤 Chrome. Brushed gold. Antique black. Satin silver.The handle, letterbox and knocker you ch...
25/05/2026

The hardware makes the door 🖤 Chrome. Brushed gold. Antique black. Satin silver.

The handle, letterbox and knocker you choose can completely change the character of your Solidor door. Bold and contemporary, or classic and traditional the combination is yours.

We have hardware samples in our showroom so you can mix and match before you commit.

Pop in Mon–Fri 9am–3:30pm, no appointment needed.

📍 Unit 16–17 Tees Court, Wallis Road, Middlesbrough TS6 6DX
📞 01642 455133

Is your conservatory ready for summer? ☀️If your existing conservatory gets unbearably hot in summer then the roof is li...
22/05/2026

Is your conservatory ready for summer? ☀️

If your existing conservatory gets unbearably hot in summer then the roof is likely the problem, not the windows.

The solution is to replace it with an Ultraframe LivinROOF or Ultraroof 380, turning it into a comfortable space you'll actually enjoy all seasons.

Done in a matter of days, with no need to rebuild from scratch.

📞 01642 455133 | ✉️ [email protected]

What makes a Solidor different from every other composite door? 🚪Most composite doors are 44mm thick. A Solidor is 48mm....
20/05/2026

What makes a Solidor different from every other composite door? 🚪

Most composite doors are 44mm thick. A Solidor is 48mm.

That extra thickness comes from a solid timber core, giving you a door that feels genuinely substantial when you open and close it. No hollow knock. No flex. Just quality you can feel.

Pair that with a 20-point locking system and you've got the most secure front door on the market.
See and feel the difference in our Teesside showroom.

📞 01642 455133 | sealtightwindows.co.uk/solidor

Not quite a conservatory, not quite an extension. Something better. ✨An orangery gives you the light of a conservatory w...
18/05/2026

Not quite a conservatory, not quite an extension. Something better. ✨

An orangery gives you the light of a conservatory with the solidity of an extension and a roof lantern that floods the space with natural light.

Bespoke brickwork, windows and doors all manufactured to your specification by our own team. Perfect for extending your kitchen, dining room or living space.

Visit our showroom to see our orangery display.
📞 01642 455133 | sealtightwindows.co.uk/orangeries

Which colour would you choose for your front door? 👇Anthracite Grey. Signal Red. Royal Blue. Chartwell Green. Irish Oak....
15/05/2026

Which colour would you choose for your front door? 👇

Anthracite Grey. Signal Red. Royal Blue. Chartwell Green. Irish Oak.

Design your own using the Solidor door designer: https://loom.ly/ePcwPGk
📞 01642 455133

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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