• Available in uPVC, Aluminium or Timber

  • Better Energy Efficiency

  • Increased Security

  • Peace of Mind Guarantees

Sliding Sash Windows

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With a rich history of being the window on Period Homes, Sliding Sash windows have been around long enough to be noticed by anyone.


Adding traditional style and modern technology, no matter what material you go for your Sliding Sash Windows are built to last. You can choose our Timber Sliding Sash for conservation areas, uPVC Sliding Sash to make them a maintenance free, modern looking window and to make it that tiny bit authentic, make it a realistic woodgrain finish which will look just as good as real wood or Aluminium for when you want a Sliding Sash window to stand the test of time.

With tried and tested pulley mechanisms, and for more traditional windows weight and cord, we know that your sliding sash windows will last a long time. With additional features such as a tilt function to help you clean the windows from the inside is another reason to let Decor be the installer to replace your windows with a contemporary Sliding Sash Window.

Material Choices

We have 3 materials for you to choose from - Aluminium, Timber & uPVC

Making any home contemporary, Aluminium is our slimmest profile and can be sprayed to any colours imaginable.

Less frame and more glass means more light floods into your home.

Benefits of Aluminium Sliding Sash

  • Slim Frames

  • Strong and Durable

  • Near No-Maintenance

  • Extensive Colour Range

  • Great Energy Efficiency

All of our Timber comes from either sustainable sourced hardwood or softwood. Micro-porous paint and stain finishes give you many options when it comes to a colour finish, whilst keeping your Windows looking fresher for longer

Benefits of Timber Sliding Sash

  • Conservation Area Approved

  • Multiple Glazing Options

  • Micro-Porous/Stained for Protection

  • Finger Jointed to Minimise Warping

  • Can Be Made to Any Shaped Opening

uPVC won't rot, rust or flake making this material very popular for replacing sliding sash windows. With a standard energy rating of A+ and the option to upgrade to Triple Glazing to be A++ your house will be warmer than ever.

Benefits of uPVC Sliding Sash

  • Better Energy Efficiency

  • Reinforced for Additional Security

  • Multiple Colour Options

  • Realistic Woodgrain Finish to Mimic Timber

  • Lead Free

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Sliding Sash Colour Options

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The most common way for customers to choose a colour with uPVC and Aluminium is by telling us a RAL number. This has become so popular that as well as Delux, Farrow & Ball and Little Green, Timber Windows can now be matched to RAL colours as well.

This has helped a lot of our customers as before this they were having to choose an either/or that made some customers abandon their original choice of windows and go with the next best thing.

At Decor we have so many colour options due to texture finishes on our Aluminium Windows, a realistic woodgrain effect on our uPVC Sliding Sash and Micro-Porous/Stained finishes on our Timber Windows.

We are sure there is a colour for you at Decor, but if it is really hard to make a decision Standard White will always be in fashion

Energy Efficiency

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No matter what material you choose, we made sure that it keeps your home warm!

Aluminium is very commonly known as being a conductor of cold air, we would be lying if we said that is not any different now - this is because the technology has improved by introducing a Polyamide Thermal Break between the profile Thermal Break that improves Energy Efficiency by 30%. This gives our Aluminium Sliding Sash Windows a B Rating by the BFRC.

uPVC is now known as the warmest window and with the uPVC Chambers within the profile it helps to break down cold air as it tries to get through. Along with Double Glazing this helps our uPVC Sliding Sash Windows achieve an A+ Rating and with Triple Glazing can boast an A++.

Timber is a natural efficient window, as their are no Chambers needed or Thermal Breaks it proves that sometime nature wins. Accompanied with our Double Glazing gives our Timber Sash Windows an Energy Rating of A as standard and upgrading to Triple Glazing helps us to achieve A++.

We are sure at Decor you should see a reduction in your fuel bills no matter material you choose.

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At Decor as much as we care about the design of your casement windows, we believe security is no.1 when it comes to making that final decision. We only choose Sliding Sash Windows that comply with the latest security measures, this helps to deflect the attempts of the most persistent intruder and stop them from gaining unauthorised access to your home. 

As Sliding Sash Windows generally go on more Period Properties they are a target for most opportunist burglars so with additional security like Anti-Jimmy Bars, Sash Restrictors and Reinforced Frames this helps all of our Sash Windows to conform to Secure by Design status as well, keeping your family and friends safer.


To be PAS24 Certified the windows need to be put through certain tests to ensure they can opposed the opportunist burglar, the test complies of tools such as; small and large screwdrivers, paint scrapers and different sized crowbars used to try and break the locking mechanisms, when the locks and other security features have not been broken in a set amount of time then the locking mechanism is PAS24 Certified.

We hope that ensuring our Sliding Sash Windows being complying with the latest security measures puts your mind at ease when you have Decor's Sliding Sash Windows installed.


When choosing Sliding Sash Windows you need to make sure that you have the correct furniture and features to suit. We have multiple colour options to help you choose the correct furniture for your home, with Fitch Locks, Finger Hooks and Easy Clean Latches we hope that when choosing your windows we have all the options you were thinking of.

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Finger Hook 

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Finger Hoop 

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Fitch Lock

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Window Styles

Maybe you would like a quote on another window style?

Please get in contact should you like to get a Free Quotation for Sliding Sash Windows