01275 342 656

1 Tweed Road, Clevedon, BS21 6RR

Windows, Conservatories & Doors in Portishead

Enclosed by sensational scenic charm, we find great satisfaction in bringing our first-class double-glazed windows, conservatories and doors to Portishead and throughout North Somerset.

Excellent Products, Local To You

Easily accessible by the M5, Portishead is just 7 miles down the road from us and 5 miles from Bristol. From Portishead Marina to Redcliff Bay, we’ve worked with homeowners across the town with a variety of home improvements, helping them to create their dream home.
With a versatile range of windows, conservatories and doors, we take pride in offering a comprehensive service across Portishead, with the ability to manufacture and fit our products.
By choosing to work with Seal-Lite, you’ll receive high-quality, British-made products manufactured by our in-house team, guaranteed.
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Reduce Your Energy Bills and Become More Environmentally Friendly

Choosing to replace your windows and doors is an excellent way to make your home more energy-efficient and environmentally friendly.
As a company, we have energy efficiency firmly in mind, which is why the windows we offer are A-rated and thermally secure, helping you to save money on your energy bills.
Moreover, as new, well-sealed windows and doors reduce air leaks and drafts, they create a more comfortable living environment by eliminating cold spots and maintaining steadier indoor temperatures.

Composite Front Doors in Portishead

Composite doors are an excellent, modern choice for a front door, with excellent durability and security. Understandably, security is a key concern for homeowners, which is why our composite doors are constructed with state-of-the-art security systems as standard.
Compared to uPVC, composite is considerably thicker, making these doors some of the thickest on the market. Comprising uPVC and a further combination of materials, these doors are incredibly strong, further adding to their security.
When considering kerb appeal, your front door is the first thing a visitor will see as they approach your property. Choosing to invest in a new composite door adds wow-factor and helps boost the value of your property, making it more appealing to potential buyers.
What’s more, we also have various colours and finishes, allowing you to truly customise your front door to suit your aesthetic and the rest of the property. We can even emulate the finish of wood.

Exceptional Bifold Doors and Patio Doors in Portishead

Bi-fold doors and patio doors are becoming increasingly popular due to their ability to connect the indoors and outdoors of your property, creating a cohesive, flowing living space.
They will allow in floods of natural light and help you enjoy the beauty of your garden and outdoor space. With a wide range of styles to choose from, we can help you to enhance the overall look, feel and functionality of your home.
These doors are also exceptionally secure, with multi-locking mechanisms and shoot-bolt locking, for added peace of mind.

Grow Your Usable Living Space With A Conservatory in Portishead

If you’re looking to extend your usable living space, a conservatory could be an excellent choice. Gone are the days of the sad conservatory with a bad reputation, known for being too cold in the winter and too hot in the summer. Modern conservatories are thermally efficient and built with high-quality materials, allowing you to enjoy the space all year round. Whether you want a new home office, a dining room, or even to extend your existing kitchen area, a conservatory will provide you with a comfortable space filled with natural light.

Expertly Installed Throughout Portishead

With a range of low-maintenance uPVC windows, composite doors, bespoke conservatories and much more available, we have experience working on various property types throughout Portishead. From quaint Victorian properties in the town, which may require more careful consideration of their original aesthetics, to modern new builds with a more contemporary feel, our team has the expertise to work on and enhance the look and energy efficiency of any home.
When working on a property, our team is committed to providing a professional, caring, and clean service from start to finish. We take great care to ensure the installation process is as non-disruptive as possible, treating your property with the utmost respect.
Our highly experienced installers are experts in their craft, trained to handle a wide range of installations, from simple window replacements to complex conservatory builds. They will work to minimise disruption, leaving the site tidy and clean once the job is complete. We pride ourselves on attention to detail and high standards of workmanship, ensuring every installation not only looks fantastic but also performs the highest standards of energy efficiency and security.

Why Choose Seal-Lite?

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Made in Britain

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10 Year Guarantee

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30 Years Experience

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No Pressure Sales

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Quality Products

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Aftercare Service

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 craftsmanship, 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.

Other Areas We Cover

Here at Seal-Lite we have been supplying and installing first class windows, doors and conservatories for over 20 years to homeowners and trade customers alike, we also offer a first-rate repair service.
If you are a homeowner or a tradesperson looking for new Windows, Doors, Double Glazing or a new Conservatory, our team is here to help. Contact us directly on 0117 2050 443 or fill out our online contact form and a team member will be in touch.

Factory & Showroom in Clevedon

We understand how important it is to homeowners and businesses alike, to actually see the quality of the products up close. So, why not drop into the Seal-Lite showroom? Come in and see the products for yourself.

Factory & Showroom in Clevedon

We understand how important it is to homeowners and businesses alike, to actually see the quality of the products up close. So, why not drop into the Seal-Lite showroom? Come in and see the products for yourself.

Frequently Asked Questions

Yes, double glazing is an excellent way to increase the property value and marketability by increasing the energy efficiency, reducing noise, enhancing security and boosting overall comfort and appeal to buyers.

Often, buyers are willing to pay more for more energy-efficient homes, especially with energy prices increasing.

New windows can also help speed up the sales process whilst commanding a higher sales price too.

The cost will depend on the materials that you choose, as well as the number of double or triple-glazed products that you choose to install. When you invest in sets of new products, you can massively reduce your energy bills, and this makes a quick return on your investment (especially when you invest in other forms of insulation for your home or property). UPVC is typically cheaper than aluminium, and they have similar benefits. Aluminium is stronger and has typically longer lifespans, so ultimately the choice of these materials is the aesthetic of your property and your preferred style.

Yes, double and triple-glazing is well known to save you money on your energy bills. Typically, after 20 years, it is a good time to consider a replacement, as this is when seals start to fail, and the glazing just isn’t going to be as efficient as a new system. If you currently have inefficient glazing, such as single-glazing, then we highly recommend that you upgrade as soon as possible to save money on energy bills.

This is why, when you invest in new double-glazing, you will see an instant increase in property value, and this makes the property more attractive when it’s time to sell, as it’s something that has been covered and isn’t added to a list of property improvements that will be needed after completion. 

A window or door should be replaced when visible damage, such as rot, cracks or warping, starts to develop. You may also experience condensation between panes, drafts, increasing energy bills, hear outside noise, have trouble opening or closing it or notice faulty security hardware.

These can also be signs that it’s time for a replacement rather than just a repair, both for cost-effectiveness and security.

Fixing condensation in double-glazing windows typically requires drilling into the unit to remove the moisture and then resealing it. However, the severity of the problem will determine whether a full unit replacement is more cost-effective.

To prevent condensation from occurring, ensure proper ventilation and regular maintenance.

All windows are exposed to the outside, especially when they are used. If you have inefficient windows, then they can be costing you a lot of money on your energy bills and make your home uncomfortable in the summer and the winter. If it’s clear that your windows have drafts or aren’t as efficient as they should be, then it’s time to upgrade your windows.

If your windows aren’t operating properly, this can be a security risk because you may not be able to properly and effectively lock your windows. Problems with locking mechanisms, such as sticking and not turning, can be repaired without the need to replace the entire window or windows. Damage to seals is more serious, and this likely requires a replacement of the window itself. If you have any doubts about the condition of your windows or need some impartial advice, get in touch with our team to find out more.

External doors provide access to the property and are used daily. This has general wear and tear over time, which causes damage to the door. Slamming the door will damage the internal mechanisms of the door, and this can also damage the glazing over time if your door features glass. This is why it’s important to reduce slamming where possible. As it’s the main door, you can’t really avoid natural damage, which will lead to your door needing to be repaired or replaced.

The security of your external doors is the most important aspect. It protects your home from intruders, so you will need to upgrade your external doors or look to arrange for repairs if the security mechanisms of the doors become compromised. Damaged mechanisms can also cause a risk of lockouts if the door closes behind you, which requires a locksmith to fix the door, which can be very expensive if this causes an emergency. If you have concerns about your external doors, then speak to our team.

With double-glazing and triple-glazed products, you don’t typically need planning permission as it will fall under permitted development. Listed buildings and buildings in conservation areas will typically require planning permission. Listed buildings also require an almost like-for-like replacement to be permitted. You should always verify your rights with your local council or the Planning Portal before proceeding with works. We can advise you on this if you have any concerns and support you with the process when planning your project during your free quote.

Portishead falls under North Somerset Council jurisdiction, which has typically normal permitted development legislation. The one piece of additional legislation to consider is the Portishead Neighbourhood Plan, if on the high street, to protect the high street’s character. This may restrict changes to the front of the property and require permission if your property is situated on the high street, so this is something to consider.

Yes, North Somerset Council have the usual legislation and requirements for properties within conservation areas and listed buildings.

For conservation areas, you are likely to require planning permission due to the protection of an area of local historical interest or an area of natural beauty.

For listed buildings, planning permission is required, and there are strict requirements to match the style of the property. Sliding sash windows are typically used to upgrade windows of listed buildings, but other installations may have to be hand-made and designed to match the property. Special vacuum-sealed double-glazing can also be installed to emulate the look of single glazing but with the benefits of double-glazing. We can advise you on this.

You can find highly specific information on the Council and Planning in the “Planning in Portishead” section.

This will depend on the product and the number of doors/windows or other items that you are replacing. Installation typically takes a day, but for single installations it may take only a few hours. Complete sets of products may take up to 2 days, and very large properties may take up to 5 days to complete. Conservatories will depend on planning permission and the time taken to approve designs. With planning permission, the project will depend on design times and time to obtain approval. With permitted development, this is reduced by around 8 to 12 weeks on average. 

We are proud to be highly committed as a sustainable business. This is echoed in our commitment to recycle everything on site, reducing our waste considerably. We are a close partner with Positive Planet, and we ensure that every item is recycled where possible. UPVC, aluminium and composite are well known for being completely recyclable materials, so we ensure that products are responsibly recycled when they are removed and then replaced with your new products.

We will need full access to the property, so we highly recommend that you be present to supply keys and then to carry out the final inspection of your installed products. We will also provide you with demonstrations on how to use your new double or triple-glazed products, as well as provide you with all of the additional information at the end of the installation process. We will require access for equipment, so please let us know if access is difficult, so we can make prior arrangements. Please ensure that someone is available on the day to provide access to the property.

Portishead is represented by two tiers of local government: North Somerset Council and Portishead Town Council. North Somerset Council is responsible for major projects, whereas Portishead Town Council is a local council focusing on community assets, playgrounds, and local events. North Somerset Council are responsible for planning, and you will have to apply to them should you require planning permission. There are also specific areas covered by the Portishead Neighbourhood Plan (prepared by Portishead Town Council and adopted by North Somerset Council in September 2023), which we cover below.

As North Somerset has a smaller population than Bristol City Council’s (BCC) jurisdiction, the planning application process should be faster, but the council is still very busy with applications. You typically won’t require planning permission for our products, as they fall under permitted development.

However, Article 4 directions are in place across some parts of Portishead, which remove certain permitted development rights, including, in some cases, the right to replace timber windows with UPVC without permission.  This is generally managed through North Somerset’s Conservation Area Appraisals, particularly for the Woodhill and Eastwood Conservation Areas. Particular streets include:

Woodhill Road: Falls within the Woodhill Conservation Area, known for Victorian and Edwardian villas where the historic timber sash windows are protected.

Beach Road West: A prestigious coastal road sitting close to or within the Eastwood Conservation Area, near the Lake Grounds. 

The High Street: Where original stone-built cottages and Victorian buildings are protected.

Our Residence 9 range is seeing more and more approval, with the council being increasingly open to high-end flush-fit UPVC.

Yes, Portishead has 4 designated Conservation Areas that are managed by North Somerset Council. These areas are designed to protect the special architecture and historic nature of the town. Specific areas include West Hill & Welly Bottom and Court Farm Environs, alongside a zone of Victorian grandeur along Woodhill. In addition to Conservation Areas, the council & town emphasise the conservation of its listed buildings and locally significant heritage buildings and sites. We recommend that you check out the North Somerset Interactive Planning Map and toggle the “Conservation Area” and “Article 4” layers. This provides a handy map of Portishead and will show you street by street if your property is within the zone without having to speak to the council. We have worked on many projects in Portishead, so we can also advise you on conservation and Article 4 status.

Triple glazing adds a third pane of glass and a second air gap. Triple glazing offers superior soundproofing and insulation, so it’s a great choice if you live near the busy high street or where you can hear the traffic of the M5. Double-glazing is a great sweet spot between cost and performance, so we offer both double and triple glazing to support you if you need exceptional soundproofing and insulation or if double glazing is sufficient enough for your property.

Typically, your new double glazing will last between 20 and 25 years. If you see fog or mist inside the two panels, this means that the seal has failed and needs replacement to restore the unit’s insulating properties. 

Older style windows used just dry air, which was sufficient, but isn’t as insulated as specialist gases that are used to fill the gap to increase insulation. Argon gas is the most commonly used for increased insulation, with some tighter gaps using Krypton gas, which provides better insulation than Argon, but it’s more expensive. Argon gas doesn’t last forever, which also contributes to the lifespan of the windows. If this gas leaks due to damage, it can affect the insulation of the unit.