Richard Sothcott Brighton Carpentry » Double glazing

Double glazing and draft-proofing

rich — Sat, 25 Apr 2009 11:56:23 +0000

The photograph here shows some double glazed sashes I have been working on for a property in Brighton.

I have glazed them with 14mm low-e sealed units. Thermal efficiency in windows is calculated as a U-value, with single-glazed windows having as value of around 5.6. Many different types of glazing unit are available each with its own U-value. As these sashes are to be installed into the original Victorian frames at the property, slim units (14mm) are used in this case. This reduces the U-value to around 3.0, and along with the draught-proofing system, will make a marked improvement to the drafty victorian sashes and offer some degree of sound insulation.

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A couple of photos showing the parting-bead and staff-bead used to draft proof the windows.

For more information on sash window refurbishment etc. see here.

Also, this week I was asked to replace some broken window glass and fit mirror film to the windows. I had not worked with this material before and had been warned it was a tricky job to do, here’s a picture of the finished job:

Triple Box Sash Window

rich — Thu, 19 Mar 2009 19:19:13 +0000

The photos below show a 3-in-one sash window I have been working on. The client asked for a double glazed sash window to match the original style of the windows in the neighbouring properties. The glazing bars and rails are machined slightly larger than traditional ones to accommodate the double glazed units. Low-e units and a draught-proofing system are used for improved thermal efficiency.

I will add further photographs once the window has been glazed and installed.

Double Glazed Sash Windows

rich — Thu, 12 Jun 2008 18:11:05 +0000

This week I have been working on sash windows again. I often get asked if it is possible to double-glaze existing sash windows. The answer is yes and no, it will depend on the style and condition of the window, and also on whether or not the property is listed etc. Building regulations also control what can and can’t be done. The sashes pictured here have been made to fit into existing frames and support double glazing. Additional lead weights are used to balance the extra weight of the glass.

Further details on sash windows can be found here. If you have any questions regarding sash window repair, refurbishment or double glazing, please get in touch. My contact details can be found here.