You have to stop the temperature dropping past the dew point. Dry or not, condensation will form relative to the air humidity. I noticed this a couple of years ago during a really cold snap with some condensation on some metal work in the garage, hence going for radiators. Dew point
Ahh yeah, but you lot live near the arctic circle, nice and toasty down here, so no rust or dew in mine, fingers crossed PS, in the UK, do we not have a cold spell whereby our dopey cousins across the pond have snaps?
would i be correct in thinking a de humidifer, although not heating but would stop condensation on steel etc
Don't trust roller shutter, but do "up and overs".... I must have misunderstood! Air Sourced Heat pump (or ground/water) is the most efficient use of electrical energy to heat a premises. Circa £4 worth of heat for every £1 spent on electric (compared to direct electric heating). Expensive to install, but has the advantage of cooling in the summer. Remember warm air on a cold surface leads to condensation (subject to dew point etc.). If you can keep the bike and other valuables above the air temperature you'll never get condensation on them..... I also sell Mirror masters.... see www.mirrormaster.com
https://www.maplin.co.uk/p/technotrade-air-quality-meter-n18dq I put one of these in the shed. Displays the temp and humidity and indicates the dew point. I run an old dehumidifier which does a stellar job. A 250W strip heater stays on permanently and convector heater runs off a timed fused spur.
Would recommend whichever route you take “there have been several good ideas made” that you get a humidity meter, they’re only a few quid, will then give you a starting point to work from
