She's getting on and the draught under the door makes her cold and saddens me.
There wasn't any thought to draught proofing back then. The best it's got is a rebate in the bottom of the door that mates with the metal weather strip which was there to stop rain blowing under.
Now over the years the rebate has rotted and flaked, the strip rusted and the air whistles round it. Some draught proofing has been tried over the years. A sticky back foam strip was stuck to the weather bar, but that just fell off after a bit. A brush brush strip was screwed to the inside of the door but is next to useless since it has nothing to press against (rests on the internal vertical surface of the step).
Changing the door or step are out of the question. Removing the weather bar would be next to impossible. The door has never been off it's frame since it was fitted.
Does anyone has any experience or advice with reducing airflow under an old door? If it were my door, I'd have a couple of ideas which I know I could do myself, but I'm 400 miles away.
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