The lower bottom sash rail is particularly vulnerable to weathering. It’s one of the most exposed points on a sash window and the most common failure points on properties in North London. The bottom...

This install of double glazed sash windows into the original frame in North London was particular gratifying because the match for the original windows took considerable effort to make like for like a...

When condensation on sash windows form, we need two basic conditions to be met: outside air temperature needs to be far lower than inside our home. Then, we must have a saturation of moisture(relative...