Timber windows are significant source of the quality and charm of period properties. As such, they are often protected by planning law, and even when not, there is more value in looking after timber windows than replacing them.
Our skilled carpenters and joiners perform meticulous and sympathetic repairs to restore the form and function of sash and casement timber windows across London’s period homes.
Environ Property Services are dedicated to the restoration and preservation of historic fabric wherever possible.
Our director, Terry Clark, is a member of The Society for the Protection of Ancient Buildings where he is engaged with the latest research and training in best practice when performing building works on old properties.
Rot, mould, warping and sticking in timber windows can all be repaired and do not necessitate replacement. Get in touch with us now request a call back to find out how we can give your windows a new lease of life.
In conservation areas, you will need to ask for planning permission to modify period timber windows on the street-facing side, while listed buildings will have protections on all windows in the house.
If you are permitted to replace the windows, it is usually on the condition that the replacement are conservation approved period replicas, built exact to the millimeter with the originals.
Because of the cost involved in producing such replicas, you need to consider whether it is more cost effective to repair or replace period windows. Except for the most extreme situations of long-term neglect, most timber windows can be repaired.
Rotten sections of timber can be cut away and replaced, while warped framed can be planed and sanded back into shape. Mould is often a result of condensation, which is an issue with ventilation and moisture permeability in the property, not an issue with the window itself.
Contrary to popular opinion, PVC windows aren’t more durable than traditional timber frames. This has been proven by the fact that many PVC windows installed in the 90s are already having to be replaced, while timber windows from the Edwardian era are still going strong.
Due to their typically very high quality hardwood construction, it is almost always advised to repair rather than replace period windows, especially because many of the problems people associate with timber windows are a result of disrepair, not the design themselves.
A well-maintained timber window will be sealed from draughts, bone dry to the touch and open and close smoothly. They add significant value to period properties and, once fully repaired, should last a lifetime.
If you want to improve the thermal or acoustic performance of your windows, we can install a second removable interior pane with opens inwards inside the property. This solution is accepted by planning departments and won’t damage historic fabric.
Sash windows slide up and down using a rope pulley and counterweight. This simple and durable system has lasted for hundreds of years, and with the appropriate maintenance there is no reason not to continue using sash windows.
A sash window should be able to move smoothly with no more force than the push of your finger, with no friction and no rattle and form an airtight seal when closed.
That might sound too good to be true if you’re used to poorly maintained sash windows, but we can this is how they’re supposed to work and exactly how sash windows perform after we have repaired them.
Posted on Google Eric SampersTrustindex verifies that the original source of the review is Google. It's the second time I use Environ's services for a survey related to a property acquisition. Faeeza has been very helpful, proactive and clear in all communications. I should receive my second survey report soon but the reason why I came back to Environ is that their reports and the care they take in explaining and clarifying every point helped me make informed decisions. Would definitely recommend working with them.Posted on Google Caoilfhionn BradyTrustindex verifies that the original source of the review is Google. Environ provided me with a damp survey. From the start, they gave me clear and accurate information, and i have 0 complaints! The Environ team are very knowledgable and very helpful. A big thank you to Keeley for helping me book this through and reassuring me.Posted on Google Peta BistanyTrustindex verifies that the original source of the review is Google. We have used Environ on a number of occasions and they always do a thorough job, give honest feedback and advice, with great people on site. Thanks to Reisse (surveyor), Danny (restorer), Kyle and Frankie (roofing) and Charney (project coordinator). Will use them againPosted on Google Ovidiu PopaTrustindex verifies that the original source of the review is Google. We had a great experience refurbishing a room with Environ. This was a complex project involving damp proofing, joist strengthening, and new flooring. The team was extremely professional and delivered high-quality execution exactly on schedule. A huge thank you to Reisse (Surveyor), Marius and Presley (Carpentry), Melvyn (Internal damp works), and Simone and Charney (Project Coordination) for their hard work and seamless delivery. Highly recommended for complex structural work!Posted on Google Merril HammerTrustindex verifies that the original source of the review is Google. So far, so excellent! A surveyor was around very speedily - knew his job - and was a really pleasant and helpful person who explained everything very clearly. And by early the next morning we had a detailed written report, with everything explained - and an offer to have a call with us should we need further explanation. As an additional bonus, this is a local company - knowing the area really helps. We now have high expectations for any work needing to be carried out...Posted on Google Emily DeyTrustindex verifies that the original source of the review is Google. Aidan did an exceptional job very neat and tidy. And now my Drain lines and plumbing issues are fixed and I would highly recommend.Posted on Google JCWTrustindex verifies that the original source of the review is Google. Aidan and John were absolutely fantastic. They carried out major drainage work that really needed doing, and the whole process was handled professionally from start to finish. They worked incredibly hard, kept everything organised, and left the area spotless — no hassle, no mess, just efficient and high-quality work. Highly recommend!Posted on Google Billy NearyTrustindex verifies that the original source of the review is Google. Absolutely amazing service from environ. Helped us with some drainage issues. Jordan the drainage engineer went above and beyond. We will definitely use them againPosted on Google andy christoforouTrustindex verifies that the original source of the review is Google. Had Aiden and Jamie come round to sort out a bad odour that was coming from the drain, they were friendly and explained everything they were doing clearly , could not be happier with the service I receivedPosted on Google Mathew FlowerTrustindex verifies that the original source of the review is Google. Aidan carried out the job with the best customer service & with sufficiency Would 100% recommend
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