uPVC Flush Casement Windows

Designed to specifically replicate the appearance of timber

Authentic designs with a modern twist

The look of wood

Flush Casement windows are designed to specifically replicate the appearance of timber. This is achieved by having the opening sash finish flush with the outer frame.

Often a traditional finish, such as White Woodgrain, English Oak, Chartwell Green or Painswick, will be a popular choice for a cottage or period home. However, when used with a smooth finish such as Anthracite Grey, designers have found it works well with contemporary design too.

Residence 9

Residence 9 is a clever blend of old and new that fuses classic style with modern materials.

It lends itself to the increasingly frantic pace of modern life by being virtually maintenance free – no painting or staining required!

DOWNLOAD BROCHURE Solutions for planning in conservation areas (BOOK) Solutions for planning in conservation areas (PDF)
Residence 7

Beautifully flush inside and out, Residence 7 is available in a range of maintenance-free finishes and in a variety of styles.

It outperforms many other window systems with its sophisticated seven chamber design and intelligent features.


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







Case Study

Residence Collection R9

Installation in the beautiful village of Heytesbury near Warminster by Thermaglaze

Case Study

Residence Collection R7

Eclectic Grey

Case Study

Residence Collection R9

Horn Hill Cottage

Case Study

Residence Collection R7

The Cookes


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