uPVC Vertical/Sliding Sash Windows

Available in three equally beautiful collections.

elegance & style

Vertical/Sliding Sash Windows are now available in a choice of materials.

The original material used in Georgian, Victorian and Edwardian properties is wood but we now have a worthy alternative to timber with our uPVC Sliding Sash windows.

Features include white woodgrain foil finishes, deep base rails, run through sash horns and surface mounted Georgian bars.

There are many benefits to replacement vertical sliding sash windows, including energy efficient double glazing, increased safety and security, and a tilt back option for easy cleaning.

The Firmseal process

We pride ourselves on offering the very best experience for our customers throughout every stage of the process.
Known fondly as the “Firmseal experience".

From quote to installation, we make it easy for you!

"We had dealt with Firmseal in the past. Came over and looked at showroom, was impressed, staff so helpful, everything went smoothly from start to finish. So nice to get to speak to a person at the end of the phone. Thank you to everyone."

Mrs M – Windows, Yeovil








What our customers say

Don’t just take our word for it. Hear what our customers have to say!

Excellent product & better value for money than competitor brands. Customer service has also been very impressive. We love our new windows.

Mr & Mrs T

Alitherm, Yeovil

Completely satisfied, you came recommended by my sister who has had various work done by yourselves.

Mrs C

Back Door, Yeovil