Replacing Sash and Casement Windows
May 01, 2014
Replacing any window system in your property is a big job, but moving changing from casement to sash, or visa versa, is a bigger job than most. This is because rather than being able to retrofit the new windows within pre-existing frames, the old window unit will need to be removed completely and replaced entirely.
This has its benefits and its disadvantages, and there are certain factors that need to be considered before you go ahead and order a new set of windows.
When going from sash to casement, or the other way round, you will greatly alter the façade of your building. This can require planning permission, especially in a listed building or a property in a conservation area. So before you get started, you definitely ought to check to see whether you need to get the Local Authority's go-ahead.
So what do you need to consider when you want to replace your casement windows with sash?
The most obvious is aesthetic. Sash was the go-to design of the 18th and 19th centuries and found everywhere in the Victorian times. As with most things, their popularity died out in the last century, with many home owners opting to install casement windows between the 60's and the 90's.
However, we are now seeing a cultural revival of sash windows which better suit period properties, and can really enhance the way that your property looks. That said, casement windows generally come in more ornate designs which can further impact the individual look of your building.
Another thing to consider is expense and time. Properties which were designed to house sash windows generally have different architectural layouts compared to those that were designed for the installation of casement fittings.
This means that when replacing one design with the other, the designers and installation team will need to consider how the windows will fit into your property. As such, replacements of this type often require bespoke designs to get the best results. This will cost more than your average like for like replacement, but will give your property a real aesthetic boost.
Whilst all of our windows will provide sterling energy efficiency, it is worth noting that the design of casement windows does make them intrinsically more energy efficient and more secure. They will also offer greater ventilation as they open far wider than Sash designs, however the sash's fixed slider means that you can keep the window open just a crack, securely, in order to let a gentle flow of air into your property.
There are many advantages and disadvantages to each window design, but the choice fundamentally comes down to what you want your property to look like. Just remember to speak to the local authority before you start ordering up replacement windows!
Image by B.C. Angell