"I Put Up Secondary Glazing on My Old Sash Windows Myself Every Year — These Are the Things I'd Tell Anyone Else Who Wants to Do It"

A dining room with a round glass-topped table with floor chairs around it and a pendant light hanging above in front of a fireplace with a grandfather floor clock in the corner and dark wood flooring.

I'm sure you've had more than enough weather chat over the past few weeks, but just in case you weren't utterly bored by it yet, let me just say... Gosh, it's cold out. And when I say out, I mean everywhere. Including inside my home, much to my chagrin. Which is exactly what led me to start thinking about secondary glazing.

Okay, that and this Instagram post I happened to stumble upon. You see, unlike me, interior designer Dan Lovatt had actually decided to do something about the cold spots caused by his original sash windows. Until I saw his post, secondary glazing was a task I believed was best left to the professionals. But, as Dan has proven, I was mistaken. So I set out to learn more about this clever DIY window treatment.