How We Install Into Existing Frames

JennyFields have been working with businesses and clients for over 35 years and one of our most common queries is the ability to fit into existing timber sub-frames in Arts and Crafts homes. Working with our specialist installers we can replace your steel windows with slimline aluminium, into your existing timber frames.


Obtaining the window measurements can either be done over email or alternatively why not have a design service where one of our consultants will visit you at home to measure up.. We also offer advice depending on the specifications you provide us with, in terms of the best type of window for your personal needs.


Many of our clients want to retain the features of their Arts and Crafts property. The original frames and beams are an integral aspect of the home’s appearance. Most of our customers want to keep their timber sub-frames. This is completely fine, we offer a rebating service to enable the windows to sit neatly into the timber frame. The majority of the time the timber is in good condition however, if they need some new life we can replace them with new timber. 

Steel Replacement Windows

Our steel replacement windows are bespokely created and designed to fit into your existing frame. Our expert team are highly experienced in removing current windows and replacing them with energy-efficient double glazed replacement windows. Traditional steel framed windows have poor insulating properties and who likes a cold house? Not me. Jennyfields have implemented the ‘best of both worlds’ using a polyamide thermal break inside a slimline aluminium window. 

Aluminum Windows Company 

Not only do you keep the warm in and the cold out with our thermally broken aluminium windows, but you also maintain the look and style of steel frames. Our aluminium windows retain heat and reduce the energy bills, as well as increasing the value of your home due to the energy-efficient qualities they hold. Aluminium is also resistant to rust and chemicals, which improves its lifespan and provides little to no maintenance. 

Contact Us – Steel Replacement Windows – Aluminum Windows Company

Here at JennyFields, we have an excellent team of window specialists with expertise in steel replacement windows. We are a trusted family run business that has been operating with domestic and commercial clients throughout the South East for 35 years. If you have any questions or would like more information please don’t hesitate to get in touch, give us a call on 01252 978 238 or email us at We’d love to hear from you!