In a nutshell

What’s an unreasonable gap or hole?

It’s a common sense definition. If you can feel external air coming in or a clear draught from a gap or hole, then it’s probably a gap or hole that needs stopping.

Fireplaces and chimneys

If an open fireplace isn’t in use, it can cause draughts  - so block it off.

Check out the full details on the draught stopping standard. (external link)

Top tips

Get the win without the wind

Check if a gap is causing a draught by feeling for cold air along the gap with the back of a wet hand - then you’ll find the major culprits.

Mind the important gaps

You don’t need to block up intentional gaps or holes that are part of the construction.

Ready to raise the standard?