About Us

Based in Clevedon, Seal-Lite has been supplying and installing double glazed UPVC windows, doors and conservatories to homeowners throughout the South West for over 20 years.

Backed by industry heavyweights Swish, Seal-Lite employs over 30 staff, many of whom have been with us for years, and we have four installation teams. Each member of staff has an immense amount of knowledge in the home improvement field.

We produce around 1,000 energy efficient UPVC windows and doors per week at our hi-tech 20,000 sq. ft. factory, all immaculately engineered.

Seal-Lite is also committed to the Excellence as Standard installer programme as we, along with hundreds of other installers, seek to raise standards across the glazing industry to give homeowners continual peace of mind.

When buying any window, door or conservatory from Seal-Lite you’re assured of lasting quality. You will also gain satisfaction from knowing that you’re doing your bit to save the environment.


Read why trusting in an EAS installer always pays off. Our testimonials page is full of positive feedback from happy homeowners across the South West.

Excellence as Standard

The industry’s most trusted charter for installers, Excellence as Standard is a member programme for the glass and glazing sector aiming to drive and promote excellence at every level of member businesses.

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