Why is there a love hate relationship with secondary glazing?
There is no question about the efficacy of well installed secondary glazing for both noise control and heat insulation. So why does it divide opinion so much?
There are many situations in a home where double glazing is not permitted or desirable, such as listed buildings. In these cases a form of double glazing can be provided by installation of secondary glazing which is in effect a second window installed inside the first, primary window.
Fitting secondary glazing does not require planning permission or cause a mess so why is it not done more?
It’s probably fair to say that secondary glazing declined when double glazing became popular in the 1980’s and 90’s . Prior to then products on the market were fairly crude. Frames were largely plain grey aluminium. On vertical sliding systems heavy glass panels were supported on a ladder system where a peg had to be slid across to engage and hold the glass otherwise the whole lot would drop like a guillotine, and the plastic guides would inevitably break so leaving the panes of glass wobbling in the frame, and it was tricky to lift them out for cleaning.
There are still many installations like that around and people have long memories.
Move forward 20 years and secondary glazing has improved many fold. New systems are powder coated white or can be colour matched to surrounding décor. The panes are supported on balances so they slide smoothly and are safe to use. The glass panels can be lifted out easily or tilted back into the room for cleaning and permit access to the primary window.
They have become more discreet, more practicable and less invasive.
So if you want to reduce noise from a busy road outside and lower your heating bills then take a fresh look at secondary glazing