New hardwood sash boxes

If you wish to reinstate traditional sash windows into your property, whether they are beyond repair or have previously replaced with non-timber or casement windows. We can supply and fit new hardwood sash boxes complete with double glazed sash windows that replicate the originals.

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Is this for you?

Have your timber sash windows been replaced with UPVC or aluminium casement windows?

Do you want to reinstate the original features?

Are your timber sash windows and frames beyond repair?

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Benefits

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

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

By installing a new sash window where they have been previously replaced you are reinstating the original character features to your home, improving both the aesthetic look of the property and its market value.

We increase the depth of our sash boxes to allow us to accommodate a thinker double glazed unit, triple glazing or combining acoustic glass to within a double glazed unit.

By installing a new sash window, you have the peace of the mind that all of the joinery is new, spray finished, completely draught-proofed and meets current building regulations.

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How do we do it?

We carefully remove the old sash windows, and the window openings are cleaned and prepared. We install the new sash boxes complete with draught-proofed double glazed sashes. We point the external surroundings of the new box and fit new internal architrave and bullnose cill. Finally, we make good any plasterwork that has been disturbed. 

We fit all of our new sash windows with new security locks and window furniture. For more information on how we do it, click below.

Find out more about New Hardwood Sash Boxes 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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