Many homeowners reach a point where moving isn’t appealing or feasible. Perhaps the family has grown, or you’ve realised you need more connection to the garden, a bigger kitchen, or a multifunctional room. An extension allows you to keep your home, land and neighbourhood while gaining extra square footage tailored to your needs. Compared to moving house, this often works out to be less disruptive, more cost‑effective (when done well), and gives you complete control over how the space is used and finished. According to industry data, well‑designed home extensions can add up to 10‑15% to a property’s value.
LivinROOF is the first roofing system designed to give you the flexibility to combine solid and glazed roofing seamlessly. It helps you extend your living space and enhance thermal performance to give you a room that you can use all year round.
UltraRoof from South Lakes Windows overcomes the twin issues of your old conservatory being too hot in summer and too cold in winter. Moreover, it creates a beautiful vaulted plastered ceiling inside – and on the outside a stunning lightweight tiled finish.
Installed on a new build extension, Orangery, or inserted into an existing flat roof, an UltraSky rooflight will help you add the feeling of space and natural light to your home.
Add a sense of light and elegance to your home with a Flat Skylight. Our innovative rooflight appears frameless from the inside, due to its edge to edge glass design. This contemporary design brings more light into your home, giving you uninterrupted views of the sky.
At South Lakes Windows Ltd we believe that an extension should feel like a natural part of your house, not a bolt‑on or afterthought. This starts with a site survey and detailed discussion about how you intend to use the space. Do you want a kitchen‑diner that opens to the garden? A larger living room, a home office or studio? Perhaps a lift in light is essential, or you want the extension to mirror existing architectural features such as roof tile pitch, window style or door finishes. We can offer a variety of extension styles to suit different homes: one‑story rear builds; side returns; wrap‑around extensions; even double‑story additions if space and planning allow. The choice of roofing, glazing, doors and frames is critical. For example, incorporating large aluminium sliding doors or bifolds can blur the boundary between indoors and out. Full length glazing or roof lanterns deliver daylight through the roof. In all cases, careful attention to insulation, weatherproofing, and design ensures the new room is comfortable year‑round — warm in winter, cool in summer.
An extension should not just look good and offer more room; it must perform well too. Using materials with excellent thermal properties, sealing, and modern glazing are essential. We install windows and doors with high energy ratings, ensure frames are well sealed, and design roofs, walls and foundations to minimise heat loss and avoid damp or drafts. This makes a big difference to comfort, energy bills, and how often you use the space.
In many older houses in the Lake District, existing rooms suffer from heat loss through old single‑glazed windows, cold bridging, or thin wall insulation. An extension offers a chance to upgrade these features throughout the build. Proper roof insulation, better glazing, and structurally sound foundations also avoid problems such as condensation or cold spots, ensuring the new space is pleasant to live in throughout the year.
Before work starts, it is vital to check whether planning permission or building regulation approval is required. Some small, single‑storey extensions fall under “permitted development” (i.e. they can be built without a full planning application), provided they meet certain criteria – size, height, distance from boundaries etc. If your property is in a conservation area, is listed, or has local restrictions, additional approvals may be required. Another practical factor is cost. Extension costs in the UK vary widely depending on size, design complexity, materials selected and location. It’s important to get accurate measurements, understand all costs including build, finishes, glazing, doors, planning, building regs, and any specialist work required.
At South Lakes Windows Ltd, we use industry-leading roofing systems to ensure every conservatory, orangery or extension is built for long-term comfort, structural integrity, and energy performance. Whether you’re replacing an existing conservatory roof or starting a new build, we offer a range of advanced options to suit your property and lifestyle.
LivinROOF is a hybrid roof system that combines solid insulated panels with glass sections, allowing natural light where you want it and high thermal performance throughout. Its plastered ceiling finish delivers a room-like feel, making it perfect for year-round living.
UltraRoof is ideal for homeowners seeking the look and feel of a traditional tiled roof while benefiting from excellent insulation and a lightweight, high-performance structure. It’s fast to install and includes a vaulted ceiling interior, making it a popular choice for modern home extensions and conservatory roof replacements.
For those looking to maximise natural light from above, UltraSKY Lanterns offer a striking architectural feature. Designed to sit on flat or orangery-style roofs, these lanterns flood the room below with daylight and create a sense of height and space. For a more discreet solution, the UltraSKY Flat Skylight delivers a sleek, frameless internal appearance and is perfect for extensions where subtle design and thermal efficiency are key.
We also offer the latest in modular construction with hup!, a revolutionary building system from Ultraframe. hup! allows us to build highly energy-efficient extensions or replacement conservatories much faster than traditional methods. The system is made up of pre-insulated panels, offering outstanding thermal values, reduced disruption on-site, and flexibility in design.
By using these cutting-edge systems, South Lakes Windows ensures every project not only looks exceptional but performs exceptionally too — all year round.
If you are considering an extension in or around Kendal, Kirkby Lonsdale, Lancaster, or any neighbouring areas, here’s why homeowners in the North of England choose South Lakes Windows Ltd:
At South Lakes Windows Ltd we aim to make your extension project as smooth as possible. We begin with a free, no‑obligation consultation, including a site survey and discussion of your goals and budget. From there, we prepare a design proposal that includes material options (frames, finishes, glazing, roofing), cost estimates, and project timeline. Once you approve, we take care of sourcing materials, managing any permissions, organising foundations and structure, installing doors, windows, roofs and finishing the interior. Our installation team works with care and precision. We maintain high standards of workmanship, respect your home, minimise disruption and leave the site clean. We aim to deliver on time, within budget, and with a quality finish that lasts. We also provide clear aftercare guidance so you know how to best maintain your new space.
Home Extensions often deliver both practical benefits and increased value. By adding functional space—a larger kitchen, extra bedroom, open‑plan living—you make your home more attractive. Real estate professionals often note that well‑executed extensions can enhance resale value significantly, especially where extended kitchens or garden‑facing living spaces are involved.
In addition, homeowners tend to enjoy their homes more: more light, a better flow between living spaces, more outdoor views, more usable space. Extensions not only solve immediate needs but often improve quality of life over the long term.
If you are ready to explore a home extension, contact South Lakes Windows Ltd for a free consultation. We’ll help you assess whether an extension suits your property, explore style and material options, provide a detailed and realistic quote, and guide you through planning and build.
From early concept to final touches, we’re here to help you design and build an extension you’ll love and enjoy for many years.
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South Lakes Windows Ltd supplies and installs premium quality glazed windows, UPVC and composite doors, conservatories and orangeries across a wide service area covering Lancashire, Cumbria and North Yorkshire.
We work with homeowners in towns and villages across the region, including:
Cumbria: Barrow-in-Furness, Dalton in Furness, Ulverston, Broughton-in-Furness, Penrith, Keswick, Grasmere, Ambleside, Windermere, Coniston, Hawkshead, Kendal, Natland, Staveley, Tebay, Sedbergh, Arnside, Allithwaite, Grange-over-Sands, Cartmel, Lindale, Levens, Milnthorpe, Heversham, Holme, Witherslack, Dent, Cark and Flookburgh, Newby Bridge.
Lancashire: Preston, Lancaster, Garstang, Morecambe, Heysham, Clitheroe, Ribchester, Poulton-le-Fylde.
North Yorkshire & Border Areas: Settle, Ingleton, Kirkby Lonsdale, Burton-in-Kendal, Burton in Lonsdale, Bentham.
We also work throughout the wider South Lakes area and regularly take on projects across the Lake District National Park. If you’re unsure whether we cover your location, just get in touch with our team – we’re always happy to help.
