Windows

At Sleep Window Systems, we can supply and install a range of modern energy efficient double glazed windows, in various colour and style combinations, all of which will enhance the appearance of your home or property. Our uPVC windows are all manufactured to the highest European standards.

composite windows

Window Construction

Materials & Design


With the introduction of uPVC, the design and performance of the domestic window has improved dramatically in recent years. Tests have show that new uPVC windows are up to 55% more efficient than older uPVC units, which obviously results in a massive different to the energy efficiency of your home.

windows and doors

Window Styles

Traditional or Modern


Our window ranges include a variety of designs and styles, such as traditional casement windows, French windows, tilt and turn windows, and vertical sliding windows. All styles include our enhanced security locking system hardware to help prevent the threat of a break-in.

interior Windows

Colour & Finish

Natural or Contemporary


Our windows are available in a wide range of finishes including realistic wood grain effects, and a variety of colour options with complementing hardware, allowing your replacement windows will truly transform your home.

Aluminium Windows

Product Spotlight

Our aluminium range of window products provide a full solution for any residential installation with a choice of contemporary or traditional styles and designs.

The benefits of choosing aluminium over uPVC include:

Energy Efficient

Using advanced thermal barrier technology, windows and doors exceed the energy performance requirements of current building regulations.

Long-Lasting

Powder-coated aluminium won’t discolour, rust, or peel, giving it a long-lasting and attractive appearance for years to come.

High Strength

By its very nature, aluminium is a stronger material compared to uPVC and doesn’t require additional reinforcement.


REAL Classic composite cross-section

Easy to Maintain

With only occasional cleaning and periodic lubrication of locks and hinges, aluminium windows and doors will look and operate ‘as-new’ for longer.

Environmentally Friendly

Aluminium is infinitely recyclable, and when recycled uses just 5% of the total energy needed to produce frames from scratch.