Sealtight Windows NE Ltd

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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 design 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.

🏡 Thinking about a new conservatory for 2027? Start the conversation now.A conservatory is a significant project, and th...
30/09/2026

🏡 Thinking about a new conservatory for 2027? Start the conversation now.

A conservatory is a significant project, and the earlier you start planning, the smoother it goes. Get in touch in September and we can:

📋 Book a free, no-obligation design visit
📐 Talk through styles, sizes and roof options
💬 Answer every question without any pressure
💰 Provide a clear, detailed quote

Our own Teesside team handles everything from survey to final installation. No subcontractors. No surprises. ✅

📞 01642 455133 | 📧 [email protected] | sealtightwindows.co.uk/conservatories

⭐⭐⭐⭐⭐ "Cannot fault the service from start to finish.""The team were professional, polite and left everything spotless. ...
25/09/2026

⭐⭐⭐⭐⭐ "Cannot fault the service from start to finish."

"The team were professional, polite and left everything spotless. The windows have completely transformed the look of the house." ✅ Verified Checkatrade review

Over 20 years on Teesside. Hundreds of homes. The same standard every single time.

If you've been considering new windows, get in touch for a free, no-obligation survey this September. 📋

📞 01642 455133 | sealtightwindows.co.uk

🍂 Autumn is the best time of year to replace your patio or French doors.Here's why:✅ Weather is still mild enough for a ...
23/09/2026

🍂 Autumn is the best time of year to replace your patio or French doors.

Here's why:

✅ Weather is still mild enough for a clean, quick installation
✅ You'll have new doors in place before the cold and rain arrives
✅ Our team are less busy than in summer, meaning faster lead times
✅ No disruption to summer entertaining plans

Our Kommerling patio and French doors are made to measure and installed by our own team. 💪 Get in touch for a free survey.

📞 01642 455133 | sealtightwindows.co.uk/doors

🪟 The difference new windows make.Thermally efficient Kommerling UPVC, the difference is immediate, from the kerb appeal...
21/09/2026

🪟 The difference new windows make.

Thermally efficient Kommerling UPVC, the difference is immediate, from the kerb appeal outside to the warmth and quiet inside.

If your windows are overdue an upgrade, September is the perfect time to get a survey booked. ⏰ Our own Teesside team can usually turn a full house around in a day or two.

📞 01642 455133 | sealtightwindows.co.uk

💡 Darker evenings mean your front door matters more than ever.As the nights draw in, the first thing people see when the...
14/09/2026

💡 Darker evenings mean your front door matters more than ever.

As the nights draw in, the first thing people see when they arrive at your home is your front door. Make it count. 🏡

Our Solidor composite doors come in 20+ colours with a huge range of glazing and decorative glass options to let light into your hallway while keeping the cold firmly outside. 🌡️

Come and see the full range in our showroom. No appointment needed. 👋

📍 Unit 16-17 Tees Court, Wallis Road, Middlesbrough TS6 6DX
🕗 Monday to Friday, 9am to 3:30pm
📞 01642 455133 | sealtightwindows.co.uk/solidor

🔐 New windows do more than keep the cold out. They keep intruders out too.Every Kommerling UPVC window we fit includes:✅...
11/09/2026

🔐 New windows do more than keep the cold out. They keep intruders out too.

Every Kommerling UPVC window we fit includes:

✅ Insurance-rated multi-point locking system
✅ Internal beading for forced entry resistance
✅ Toughened or specialist Pilkington glazing
✅ Reinforced profiles throughout

With the darker evenings approaching, home security is worth thinking about. 💪 Our team are happy to talk through the best options for your home, with no obligation.

📞 01642 455133 | sealtightwindows.co.uk

✨ An orangery in autumn is something special.Roof lantern framing the sky as the leaves turn. 🍂 Warm, bright space while...
09/09/2026

✨ An orangery in autumn is something special.

Roof lantern framing the sky as the leaves turn. 🍂 Warm, bright space while the garden settles down for winter. A room that earns its place every single month of the year.

If you've been thinking about an orangery, September is the right time to start the conversation. Our team will guide you through design, planning and build from start to finish. 🙌

📍 Unit 16-17 Tees Court, Wallis Road, Middlesbrough TS6 6DX
🕗 Monday to Friday, 9am to 3:30pm
📞 01642 455133 | sealtightwindows.co.uk/orangeries

🍂 Don't let your conservatory go dark for winter. There's a better option.Most conservatories become unusable between Oc...
07/09/2026

🍂 Don't let your conservatory go dark for winter. There's a better option.

Most conservatories become unusable between October and March. But they don't have to.

An Ultraframe LivinROOF transforms your conservatory into a fully insulated room that stays warm and comfortable whatever the weather. ✅ Optional glazed sections keep it bright. Installed in just 3-4 days.

Book a free design visit this September and we can have it fitted before winter sets in. 📋

📞 01642 455133 | sealtightwindows.co.uk/conservatories

🚪 Is your front door letting in draughts? September is the time to sort it.A tired front door is one of the biggest sour...
05/09/2026

🚪 Is your front door letting in draughts? September is the time to sort it.

A tired front door is one of the biggest sources of heat loss in a home. A Solidor composite door changes that completely.

73mm solid timber core. 🌡️ Outstanding thermal performance. Insurance-rated locking. 🔐 Available in 20+ colours.

Fitted by our own team, usually in a single day. ✅ No fuss, no disruption.

📞 01642 455133 | sealtightwindows.co.uk/solidor

🍂 September is here. Are your windows ready for winter?The nights are drawing in and the temperature is starting to drop...
04/09/2026

🍂 September is here. Are your windows ready for winter?

The nights are drawing in and the temperature is starting to drop. If your windows are draughty, difficult to close or just past their best, now is the time to act before the worst of the weather arrives.

Our Kommerling 5-chamber UPVC windows keep the warmth in and the cold out. ✅ A-rated for thermal efficiency, manufactured at our own Teesside facility and installed by our own team.

Free survey and quote. No obligation. 📋

📞 01642 455133 | 📧 [email protected] | 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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