About Windows Stockton on Tees


At Sealtight Windows NE Ltd, we provide numerous window options for customers across Stockton on Tees. We manufacture and install Kommerling windows, providing an extensive choice of frames, in numerous different colours. As well as this, we provide an extensive range of glazing options, giving you the windows that you want, at the exact requirements you need. For the best windows in Stockton on Tees, choose Sealtight Windows NE Ltd.


Our Kommerling UPVC windows have been industry leading for over 40 years, providing the highest levels of innovation and quality you can find. This level of quality is driven by a keen environmental awareness. We want homes in Stockton on Tees to be much more energy efficient, and a great way of doing this is installing high quality UPVC windows. It’s common knowledge that earth is gradually loosing its natural resources, and battling the devastating effects of climate change. That’s why it is imperative that both businesses and consumers look to help reduce our carbon footprint. We can all do our bit by using less energy in our homes and investing in energy efficient products, such as quality windows.


Lead additives have been removed from Kommerling windows, and have been replaced with recycled materials. This commitment to sustainability, along with an extensive knowledge base, allows us to provide our customers in Stockton on Tees the most energy efficient windows available.


Professional, high quality window installation also offers numerous other benefits. The quality construction and advanced insulating properties help to maintain a warm environment, drastically reducing heating bills.


Whilst most window manufacturers and installers use an outdated 3 chamber profile, our UPVC windows have a patented 5 chamber profile, allowing for an increased thermal performance. This feature is one of the main reasons that our windows are much more efficient than our competitors. Our windows have soft sculptured lines in the frame and sash, and low line gaskets that help to achieve a much slimmer sightline. As standard, all our windows are supplied and fitted with the following:


  • A profile depth of 70mm
  • A 5 chamber profile, allowing increased insulation
  • Reinforced profile
  • Finished in a choice of 44 different colours
  • Higher security from internal beading
  • 25 year colourfast guarantee


Our partnership with Kommerling allows us to provide windows that are tailored to your requirements and specifications. This will help to ensure that the windows fit perfectly in your home, and give you the desired outcome that you’re looking to achieve. Our wide range of options and customisations helps you to easily find a window that you love, and that is unique to you and your home.


Our Kommerling window frames are fitted with Pilkington glass; a supplier of glass that is unrivalled in their industry for product development, product quality and innovation. The strength of this partnership allows us to provide our customers with the latest, most advanced and highest quality products, that are far superior to those of our competitors.


For the highest quality windows in Stockton on Tees, choose Sealtight Windows.