Anyone else struggling to keep a small cabin warm without burning through logs too fast?

Not a cabin dweller myself (full-time van life here 🚐) but the heat retention struggle is very real across the board — so hope you don't mind me chipping in!

Biggest game changer I've seen mentioned again and again is insulation before anything else. Doesn't matter how efficient your stove is if the heat's just leaking straight out through the walls and roof. Vapour barriers, rockwool, the works.

A few things worth looking into:

• Thermal mass — stone or brick around/behind your stove absorbs heat and releases it slowly overnight
• Draft excluders on doors — sounds boring but makes a massive difference
• Stove placement — central positioning circulates heat way better than tucking it in a corner
• Seasoned wood only — wet logs are basically just steam generators, you lose so much energy

I run a diesel heater in the van (Webasto, pricey but worth it) and the principle's the same — a well-sealed, well-insulated space needs a fraction of the energy to stay warm.

Have you had anyone do a proper assessment of where you're losing heat? Sometimes it's obvious (single glazing, gaps around flue pipes) and a weekend's work sorts it right out.

Would love to hear what others in actual cabins are doing — especially anyone who's cracked the overnight warmth thing without stoking at 3am! 😄

@VanAnne totally valid crossover — thermals are thermals whether you're in a van or a cabin.

One thing I'd add from narrowboat life specifically: thermal mass works against you in small spaces. Everyone assumes more insulation = always better, but if you're heating a tiny volume, you want the fabric of the structure to respond quickly, not absorb heat for hours before you feel it.

On the boat I run a Webasto diesel heater rather than a log burner precisely because I can dial it down to near-zero output overnight and bring the temperature back up in 20 minutes. Logs are all-or-nothing once they're going.

For cabin folk — if you're wedded to wood, a rocket mass heater burns far more efficiently than a conventional stove, and a good door seal (so basic but so often neglected) makes an enormous difference before you touch anything else.

Nobody's mentioned vapour barriers yet and it's driving me mad reading this thread.

Insulation means nothing if you're letting moisture-laden air bypass it and condense inside your wall cavity. In my shepherd's hut I run 50mm Celotex between the ribs, then a proper vapour control layer on the warm side before internal cladding. Night and day difference versus what I had before.

Also stop obsessing over the stove output rating. A 5kW stove in a poorly sealed 20m² space will lose to air infiltration every time. Draught-proof the floor perimeter first — that's where cold air floods in on a Scottish night.

Priority order:

1. Air tightness
2. Vapour control
3. Insulation U-values
4. Then worry about your heat source

People buy a bigger log burner when what they actually need is a tube of fire-rated sealant.

@SolarJunkie fair point on vapour barriers, good shout.

I'd add — don't sleep on thermal mass if your cabin's got a concrete floor or stone walls. Takes ages to heat up but holds it overnight dead well. My little off-grid place runs a small Morso squirrel stove and the flagstone floor genuinely radiates warmth for hours after the fire's died down.

Also worth checking your door seals before anything else tbh. Lost so much heat through gaps before I sorted mine — proper draught excluder tape cost me about £3 from Screwfix and made a noticeable difference immediately.

Logs-wise, seasoned hardwood is the obvious one but people still buy wet wood and wonder why they're burning through it. Moisture meter was about a tenner on Amazon, game changer.

@ExChippie94 thermal mass is massively underrated yeah. My shepherd's hut has a slate floor and honestly it holds heat way longer than I expected overnight.

One thing nobody's touched on — draught sealing before you do anything else. Logs vanish fast when you're basically heating the outside. Checked mine with a cheap smoke pencil, found three gaps I'd never have spotted otherwise.

Also if you're running any electric supplemental heat, even a small panel heater on a timer, pair it with a Victron SmartShunt so you actually know what it's costing you battery-wise. Stopped me massively overestimating what my system could handle through winter.

Fix the envelope first, then worry about the heat source. Done it backwards myself, not fun.