Aluminium Secondary Glazing
Offering superior noise reduction, ideal for conservation and listed properties.
Strong, reliable, long lasting and unobtrusive
Perfect solutions for heritage and conservation
Often, the only way to retain the external character of a period property is to use secondary glazing. Our designers can ensure that slimline aluminium sections will sit discreetly behind your window frames, preserving the original look.
Our aluminium secondary glazing offers increased thermal insulation, enhanced sound insulation and improved security, as well as reducing condensation.
The most popular options are vertical and horizontal sliding, however, hinged, lift-out or fixed units, can provide an alternative solution.
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".
"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
FIRST CONTACT
CONSULTATION
DETAILED QUOTE
SURVEYING & PREPARATION
INSTALLATION
SIGN-OFF & PAYMENT
reviews
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
The Firmseal Family
Like the look of our service and products but not based in our catchment area? Take a look at our 2 sister companies in the surrounding area.
