Restoring Sash Windows in Listed Buildings


Making repairs and restorations to listed properties can often be fraught with regulations and restrictions. Ventrolla have over 35 years’ experience working with listed properties and are committed to providing you with the best advice and guiding you step-by-step through the process.

When the rules and regulations need to be followed 

When upgrading or refurbishing your windows most councils and conservation officers would ask that you renovate your windows where possible, saving as much of the original window. Upgrading is nearly always preferable to replacement. We’ve helped many listed property owners through the planning application process – providing our window-by-window survey, our recommendations and any drawings or specifications needed to help the councils understand the work that will be undertaken.

Ventrolla advice for listed properties:

“Do your research on these websites”

The Society for Protection of Ancient Buildings

The listed property owners club

To find your local council visit

Historic England & Historic Scotland provide great advice for you and your home:

Planning (Listed Buildings and Conservation Areas) Act 1990

Ventrolla advice for listed properties:

“Have a chat with those in the industry”

If you own a listed property and are thinking of renovating your period windows we always recommend you speak with your local conservation officer first to check if you require Listed Building Consent or Planning Permission before any work commences. We can then provide a window-by-window quotation detailing the work required, plus any accompanying documentation your planning officer may wish to see.

Your planning officer will want to know about the works. An overview of the renovation process is below;

  • Sash window units are carefully removed from the window frame
  • Any decaying timber in the units, frame or sill is routed out to expose the “sound” timber
  • Occasionally, new timber is spliced in or replaced where the existing timber is beyond repair
  • Our unique epoxy resin, VR90, is used to fill the cavities and is moulded to match the existing profile of the timber
  • Sash cords are replaced, pulleys serviced and the sashes correctly balanced to ensure smooth operation of the windows
  • The windows are also upgraded by fitting the Ventrolla Perimeter Sealing System (VPSS), which virtually eliminates draughts and rattles
  • At the same time, the Ventrolla Sash Removal System (SRS) can also be fitted to ease future painting, cleaning and maintenance

IT ALL BEGINS WITH A free, no obligation, SURVEY

It’s a very simple process to get your windows just how you want them & the initial stage is a free, no obligation, survey with one of our friendly experts.
It takes up very little of your time and is a no pressure, no hassle, no commitment way for us to give you a tailored quote for work.

To help us move on with your enquiry quickly & thoroughly please answer the following questions: