4 crucial factors to consider when choosing replacement windows

April 4, 2019

White uPVC sliding sash windows
Draughty windows, freezing house in the morning, high energy bills? There are several signs to spot if your windows need to be replaced. Over the years, significant developments have been made to making windows more energy efficient and secure so considering replacement windows could be a great investment for your home.

We’ve collected a few crucial factors to consider when looking for replacement windows to help you get a high-quality product you can rely on for years to come.

Is the company certified?

Government-backed schemes, such as FENSA or Certass, have been set up to ensure quality work in the industry. Companies that are accredited by these schemes make sure that good building regulation compliance is followed for their installations.

Jack of Glass is accredited by FENSA, meaning that we are assessed by them regularly to ensure our work meets a high standard.

What is the warranty?

Peace of mind is something everyone is striving for, especially with a home improvement like investing in replacement uPVC or aluminium windows. Always make sure that the windows come with a good warranty to save yourself sleepless nights or a cold home in the future.

All windows installed by Jack of Glass come with a 10-year guarantee by our first-class repair service.

uPVC Sash WindowAre the windows energy efficient?

A Window Energy Rating (WER) is given to a product by an independent authority to rate its energy efficiency, its ability to keep the cold out and retain warmth. Building Regulations for windows in most areas throughout the country require that the minimum energy rating for a window is ‘C’.

Windows from Jack of Glass have a rating of ‘A’ as standard. The gas featured in the sealed double glazing and the type of glass used may see this rating increase and U-values lowered.

Are the windows secure?

The thought of intruders finding a way into your home is terrifying and one of the most common ways of them getting into a home is through a window. We never compromise on the durability and safety of our windows. All of our windows are backed by Secured by Design, an official police security initiative, meaning that our windows meet the strictest security standards, to keep your family and home safe.

Where can I get replacement windows in Buckinghamshire?

Jack of Glass has many years of experience in supplying and installing high-quality windows to happy homeowners throughout High Wycombe, Amersham, Marlow and beyond. Our friendly and knowledgeable team are on hand to answer any questions you may have about replacing your windows. Contact us online or pop into our showroom in High Wycombe to see what we can do for you.


Areas we serve

Operating out of High Wycombe for 30 years, we know the local area like the back of our hand. We supply and install high quality glass and glazing to homes in Princes Risborough, Chesham, Amersham, Beaconsfield, Marlow and beyond.

If you have a particular way of improving your home in mind and reside anywhere in or around a 20 mile radius, feel free to get in touch with our reliable team. We’ll be in touch swiftly.

K. Piowman-sale

Jack of Glass have done a wonderful job in putting a coloured glass worktop to my dressing table and installing a mirror. Has totally transformed my room. Unbelievable. Take a look at their showroom some really good ideas with glass, fantastic colours.

A. Hunt

Outstanding quality of service, and great at catering to bespoke requests. They are fantastic value for money, and a lovely bunch of boys to boot 🙂

H. Ellams

Great service at Wycombe Museum last Friday. The guys went above and beyond with their glass delivery service. This is the 3rd or 4th time i’ve used them.Just to let you know I shared it on High Wycombe facebook page too.

M. Harber

Incredible transformation. Great service. Amazingly fast replacement of a very big window!! Everything cleared up and great value for money.

M. Shoaib

Purchased 2 green house windows, got the size wrong, went back to get it cut to a smaller size FREE of charge and stayed after closing time until I arrived.

N. Shanta

I highly recommend Jack of Glass! Matt, Chris and their team deliver an outstanding service. I am extremely happy with the job that they did in our flat. It really exceeded all of my expectations and the room looks absolutely beautiful with the floor to ceiling mirrors.

S. Nandha

Great team and with great quality to detail on the finish of my glass splashbacks, also the bi-fold door works a treat for our dream house

Mr. Barlow

I recently needed to replace around ten or so panes of glass in my greenhouse . Very good service very nice guys ,cut and wrapped the glass while i waited and even made an alteration to a pane that i had measured wrongly .Thank you for the help and i will use again.

A. Lovell

We have recently had our front door and windows replaced by Jack of Glass. They were great. The communication was amazing, we knew every step of the way what was happening and they left place spotless. Our new door and windows have completely changed the house. Very happy and would recommend to anyone.

Josh Webb

Jack of glass have recently replaced all my windows efficiently and to a high standard. The price was also very reasonable. The customer service was outstanding along with the services they provide. Highly recommended.

Mr Bennett

I had to replace a small double glazed panel in a window. I though it would be difficult to get anybody interested as it was such a small job. However, Jack of Glass did the work. They visited the house to take the measurements, ordered the replacement glass and fitted it all very efficiently and at a reasonable cost. I will use them again.

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