Hardwood Double Glazed Sash Windows

We can make double glazed hardwood timber sash windows to fit within your original box sash frame. New hardwood double glazing will increase the thermal performance of your sash windows and reduce noise pollution while maintaining the traditional character of your property.

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Is this for you?

Are your windows single glazed?

Do you want to improve the thermal performance?

Do you get condensation?

Are they old and in disrepair?

Do you want better sound-proofing?

Do you want to replace but keep the traditional character of your property?

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Benefits

Replacing the sashes without replacing the boxes is a more cost-effective solution and less disruptive than replacing the whole window.

A double glazed sash will provide improved thermal performance, will retain heat and reduce the noise level.

Our new sashes will replicate the original window keeping the character and architectural identity of your property.

Our slimline unit meets the needs of all local Building Control and Planning Officers.

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How do we do it?

We make new timber sashes out of Sapele or Accoya, both of which are incredibly durable. We then fit into the existing boxes that we fully restore.

Replacing the sashes without replacing the boxes is a more cost-effective solution and less disruption than replacing the whole window.

We always take great care to ensure that the new double glazed sashes sympathetically replicate the originals, in terms of style, pane configuration and matching any horn or molding detail. 

On-site our team of window fitters will strip back the sash box frames to wood, they will repair any rot and replace hardwood cills if required. Then the boxes will be painted to finish coat using The Little Green Company paint. Once the boxes are ready, we will install new pulleys, new lead weights and then fit the new double glazed sashes incorporating a draught-proofing system. Finally, we provide new security locks and window furniture. For more information about new hardwood double glazing, click below.

Find out more about New Hardwood Double Glazing or contact us for a no obligation chat

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Client testimonials

“The service was smooth and the end result looks impeccable.”

SM - Shepperton , 27 July 2016

“Great team clear communication and wonderful hardwood sash Windows. Thoroughly recommend them.”

JWB - West Ealing , 21 July 2016

“Very efficient, polite and professional. Completed the work on time. Clear communication.”

MD - Shephards Bush , 19 July 2016

“This is the second time we’ve had work done by Sashwise Limited and we wouldn’t hesitate to recommend them.”

MR - Richmond, 12 July 2016

“Tim was extremely efficient and knew his job inside and out. He was charming to have around the house and the windows now almost work as well as double glazing!”

CM - Teddington, 9 May 2016

We’re really pleased with the result – the windows now fit the frames and are now draught-free, which has made a noticeable difference to our bathroom.

CT, East Molesey - Jan 15

Thank you and your team for doing a fine job on the 14 windows. We are happy with the result and are enjoying the benefits of fewer draughts.

HF, Putney - Jan 15

I’m delighted with the work, thank you and please pass on my thanks to Dan and Tim.

ME, Twickenham - Feb 2015

I am very pleased with the results. Barry was a very good workman, leaving my property in a very tidy state.

LA, Teddington - Feb 15

We are very happy with our beautiful windows and shutters, and the overall service received from Sashwise, which has been head and shoulders above our experience of other local businesses.

SZ, Teddington - April 15

Many thanks for a great service and being such a professional company to deal with.

FS, St Margarets - June 15

Many thanks, I’m delighted with the results, please convey my thanks for a super job.

AM, Teddington - Aug 15

Tim just finished our windows and we are totally thrilled with them. Not just that but Tim was so helpful, professional and skilled that we wanted to pass on our gratitude and would be happy to give a testimonial for any future possible clients.

HH, Chiswick - July 15

I just wanted to let you know that we are delighted with the work. Barry was absolutely professional – punctual, polite and hard working. I could not have asked for a better craftsman. I will definitely recommend you.

CR, Teddington - June 15

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