Low U-Value

Flush Sash option

Repeatable quality

Easy to Install

11 Colours Available

Aluminium Windows by

Choosing the right windows for your home is an important decision. An investment that makes a real difference to how warm and secure you feel; as well as changing the look of your property. This is why we have designed the Classic system from the ground up. Building on years of experience, we’ve incorporated many new innovative ideas; creating a warmer, slimmer and more secure window system. Designed for discerning homeowners that aren’t willing to compromise, our windows are tailored to those who demand more for their home.

Traditional or Contemporary styling

Sheerline aluminium windows are available in a choice of two opening sash styles; ‘Stepped’ – inspired by traditional steel windows – and ‘Contemporary’ with a more modern minimalist aesthetic. Both styles are available in either our standard outer frame, or as a ‘Flush’ option that brings both the perimeter and the opening sash perfectly in-line with each other. You can draw on our experience if required to find the one that resonates best with your home’s character.

Aluminium windows add a fantastically modern look to your home.

Whether you want that flush sash on both sides of your window or you’re looking for a Crittal-style replacement with a twist – aluminium windows are what you’re looking for.

Here at Window Monkey we offer the best of both worlds – with choices from Origin’s OW70 and OW80 range, or Smart’s Alitherm 300 or Heritage47.

This really is all about the look.


Origin OW80


Origin OW70

Whether you’re looking for a flush sash window both sides or an ultra-slim frame to let more light in, with Origin’s OW70 and OW80 you can find the perfect fit for you – and in 150 RAL colours!

Both windows have excellent thermal efficiency and come with Origin’s massive 20 Year Guarantee – together with their low-maintenance you can’t go wrong.

Origin 20 Year Guarantee

20 Year Guarantee

With Origin’s 20-Year guarantee you can rest safe in the knowledge that you are buying a quality product at an affordable price – all you have to worry about is what colour to get your windows in!

Customise Your Windows

With a wide range of different accessories and finishes to choose from, you can really personalise your windows.

Different Handle Options

Origin Handles

Different Window Options

Origin Colours

Thermally Efficient

This range uses the latest in polyamide thermal barrier technology, designed to keep the cold outside and the warm inside. This means you can snuggle up in even the coldest weather.

That also means lower energy bills!

Alitherm 300 Example
Heritage 47 Example

Heritage 47

The only range you need when wanting to update your windows but are trapped into keeping that same classic style of the property.

Available in a huge range of different colours and to most specifications. An elegant window profile when you need that classical style.

Sliding Sash

Finally, through Vevo’s Aluminium Sliding Sash windows, we have a great looking alternative to PVC that looks great in both homes and offices alike.

Aluminium Window

With that same 25-year guarantee, that same almost limitless choice of colours and a great selection of different traditional authentic-looking locking catches – what is there not to love?