From Portishead Marina to Redcliff Bay

With a long history as a bustling fishing port, the docks have since closed and been redeveloped into a marina alongside prominent residential areas. With a buzzing sporting scene and vivacious Victorian high street, there are many lovely places to eat & drink and just take in the surrounding coastal views and overall atmosphere. Whether your Portishead home needs reviving with a modern aluminium window installation or restore its heritage, we look forward to hearing from you very soon.

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Made in Great Britain

10 year guarantee

Over 30 years experience

North Somerset's evolving marina town

Portishead's name derives from “port at the head of the river,” also known as “Portshead,” “Portschute,” “Portesheve” and “Posset” over its long-established history. Rapidly increasing in size following its economy shift to various service industries, Portishead is becoming a much sought-after location to many different types of homeowner. Capable of boosting Somerset and the West of England as a whole, the exciting prospect of reopening the Portishead train line also looms on the ever-nearing horizon (2018).

With many scenic walks to take in, whilst you explore the town take note of the early Victorian architectural feats; where some buildings have managed to retain their original features of the time, amongst the plethora of new developments. It’s also reassuring to note that Portishead's Lake Grounds have received Green Flag status (2018), setting the benchmark for Somerset public parks and green spaces. It’s always a pleasure to visit Portishead, enhancing and complimenting the array of both modern and traditional buildings that this area has on offer.

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White triple glazed casement windows

Liam Davidson

"An excellent service all round"

An excellent service all round. Very friendly and took time to ensure the windows were exactly as I wanted. The windows themselves are well made and have completely transformed my house.

Anthony Derrick

"Thoroughly recommend Seal-lite"

We had Seal-lite install full new double glazing including bi-fold doors a little while ago, excellent products and service. Their after sales service by Simon is very, very good indeed. Thoroughly recommend Seal-lite.

Chris Townsend

"Excellent service from start to finish"

An excellent job done by Paul and his team. Transforming the front of our house with Georgian bar style windows and a fantastic new bay window. Finished off by a new door. Highly recommended excellent service from start to finish.

Helen Marks

"Very patient and understanding"

I would absolutely recommend Seal-Lite Ltd. They have been so helpful helping me to match my new aluminium windows to the existing house. They have also been very patient and understanding with me having to delay installation for several months due to problems with my builder. Kevin fitted the windows very carefully and did an excellent job. A couple of minor things were no problem and resolved quickly to my full satisfaction. I would like to thank Paul and Pete and the team for being so so helpful. A pleasure to do business with this company – I wish all companies were like this.

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CertassQA National WarrantiesSwish Approved InstallerCEN Solutions Bronze

Excellent aftercare service and on-site service engineer for complete peace of mind

Always striving to look after our customers wherever possible, we are extremely proud of the high standards of craftmanship, fabrication, installation and aftercare services that our highly skilled team continue to excel at delivering. Our excellent aftersales service and on-site service engineer proactively deal with any issues that occasionally occur with our products directly - no job is too small for our service engineer!

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Seal-Lite Showroom

Visit our showroom

It’s important for homeowners and businesses alike to actually see the quality of our products up close. So, why not come and see the products for yourself?

Home under construction

New build projects

With an outstanding range of uPVC and aluminium products supplied directly to our trade customers, we are highly experienced in working alongside architects and contractors on new build projects.

Trade installaters

Trade supply

As well as serving the local community, we have many established connections with various different trade customers across the South West who value the high-quality products that we produce.