Sliding sash windows have been a popular style since way back when, the end of the 16th century to be precise.  Beautiful traditional timber sash windows are loved as much today for their ability to combine distinctive style with modern technology. Their ability to retain aesthetic appeal and the stunning original features of a property whilst offering the thermal efficiency of double glazing makes them ideal for homeowners of period properties.


Although many have heard the term ‘sash window’, more specifically referred to as a ‘sliding sash window’, they may not always know what that means.  So, what exactly is a sliding sash window, I hear you ask?  Sliding sashes are vertically opening windows consisting of two framed window sashes.  One sash is positioned in front of the other and they sit in frames with vertical grooves that allow them to move up and down smoothly without any danger of one frame rubbing against the other and damaging it. The up and down motion of vertical sliding sash windows is assisted by weighted cords and pulleys which can be hidden within the frame or exposed on the inside of the window if preferred.

To reiterate, the sash is the moveable part of the window, made up of the vertical and horizontal frame that holds the glass in place.

At Parsons Joinery, we offer a number of sash styles, colour options and finishes for example, you may choose to have the upper sash fixed with only the lower sash able to move up and down (known as a single-hung sliding sash window), or you may opt to have both sashes moving (we refer to this style as a double-hung sliding sash window).


See why so many of our customers love vertical sliders in our timber sashes gallery:

The benefits of timber sash windows

Suited to homes in conservation areas – we have been designing, manufacturing and installing high quality sash windows into hundreds of property types over the many years we have been in business. Our skilled joiners understand how important it is to retain the original elements of period homes and will be able to advise on what will work for the type of property you reside in, whether you are repairing original timber sash windows (inserting new glass into the existing window frames so you can retain the existing windows) or replacing everything completely, we will ensure the windows we craft retain the authenticity and practicality you need.

Energy efficiency – some people mistakenly think that they need casement windows to improve thermal performance, but this isn’t the case at all.  You don’t need to install uPVC sliding sash windows either.  Technology has come a long way and new wooden windows will offer you excellent, energy efficient windows without compromising on the charm and style of your home.If double glazing hasn’t been permitted by your planning department (this may be the case if you own a listed property or live in a conservation area), fear not, we can talk you through other options.

Smooth to open and easy to operate – we make everything bespoke so we can guarantee precise engineering to ensure smooth running. Our sliding sashes are easy clean and effortless to open.

Beautiful range of colours and finishes – we offer a wide range of colours and traditional woodgrain finishes.  Plus, we can make all joinery to fit your exact window opening, no matter what the size. If you would like traditional sash horns, it’s not a problem.

Great ventilation and extra security – sliding sash windows can be opened either at the top or bottom for increased ventilation and to keep your home secure.  We can also fit window restrictors which can be engaged to provide ventilation without needing to open your window completely.  If high security and good ventilation is a priority for you, sashes will deliver.  The lack of hinges also means you don’t have to worry about windy weather slamming your windows shut!

Why wood?– timber is a versatile and durable material.  By its very nature, it is also a natural barrier to the cold.  As all our sliding sash windows, are made from timber, they provide a renewable and sustainable option for your home.  The choice of timber we use if entirely your choice but typically, we use softwood with hardwood sills for our windows and doors.  The softwood we use is a kiln dried redwood which is generally more thermally efficient than most hardwoods.  All our timber comes from FSC and PEFC certified forests. So, you can rest assured that the wood used to create your products is of exceptional quality, sustainable and good for the environment.  Plus, our products are all made inhouse and we are proud to be Made in Britain members.

Whether wooden windows, internal doors, patio doors, front doors or other type of bespoke joinery – we can craft the perfect product to suit your home.