Product Warranties

Protected for Years to Come*

Which? Recommended

Trusted Installer

Trading Standards

Buy with Confidence

Product Warranties

Protected for Years to Come*

Which? Recommended

Trusted Installer

Trading Standards

Buy with Confidence

Looking for more space but dreading weeks of builders, mess, and unpredictable weather delays? At Dorset Windows, we are proud to offer a revolutionary way to extend your home using Ultraframe’s advanced modular extension technology.

By combining the speed of off-site manufacturing with the highest energy efficiency ratings on the market, we can deliver a beautiful, permanent room in a fraction of the time of a traditional brick build.

Marketing image showcasing three energy-efficient living space options: Conservatories, Garden Homes, and Orangeries by Hup. Each option features a sketched structure emphasizing sustainability and additional living space. The tone is modern and eco-friendly.

Why Choose a Modular Extension?

Traditional extensions often come with stress: digging foundations, waiting for bricklayers, and dealing with British rain. Our modular system changes the game:

  • 5x Faster Than Brick: Because the structural components are precision-engineered in a factory, the “on-site” build time is dramatically reduced. We can often get your extension watertight in just a few days.
  • 5x More Energy Efficient: These aren’t just “summer rooms.” With a U-Value of 0.17, our modular walls are five times more thermally efficient than a standard brick wall, ensuring your new space stays warm in the winter and cool in the summer.
  • Total Design Flexibility: Whether you want a contemporary “hup!” style extension with floor-to-ceiling glass or a traditional look that matches your existing brickwork, the options are endless.
  • Less Disruption: Say goodbye to cement mixers and piles of bricks in your garden. The modular delivery means a cleaner, quieter, and more organised site.
Call us on 01202 825225


Tailored to Your Dorset Home

As a local, family-run business with over 20 years of experience, we know that every home in Bournemouth, Wimborne, and across Dorset is unique. Our modular extensions are fully customisable:

  • Roof Styles: Choose from the Ultraroof (tiled finish), Livinroof (hybrid solid/glass), or a contemporary Flat Roof with stylish lanterns.
  • Wall Finishes: We can finish your extension in traditional brick slip, modern render, or even timber/cedar cladding to perfectly complement your property.

Windows & Doors: Being window specialists, we can integrate the latest Bi-fold doors, sliding patio doors, or slimline aluminium windows to flood your new room with natural light.

Anthracite Grey Bi-Fold Doors
A modern extension with a slanted glass roof and large windows. Inside, there's a cozy seating area with red chairs, a rug, and a potted plant.

Why Trust Us with Your Home Extension?

  1. Expert Project Management: We handle everything from the initial design and survey to the final installation. You won’t need to juggle multiple contractors or worry about architects.
  2. No High Pressure: We are a family business, providing honest advice and transparent, written quotes.
  3. Local Expertise: We understand local building styles and weather conditions, ensuring your extension is structurally designed for your specific postcode.
  4. 10-Year Guarantee: Every installation is backed by our comprehensive guarantee and insurance backed warranty for total peace of mind.
Get Your Free Quote Call us on 01202 825225
A bright living room with a glass ceiling, teal sofa, brown leather chair, and large windows opening to a garden. The space feels modern and inviting.