Wooden beam - white discolouration/mould

DailyClicker

Hi,

We've got a few wooden beams around our home, but have noticed they have started becoming discoloured (white patches).

We have tried gently rubbing them down & some diluted hot water + vinegar, which has helped, but hasn't fully removed it.

Any tips of what is best to restore & protect these going forwards?

Thanks,

DailyClicker

Another example of a beam -

Emmia

Does the white, brush off? is it perhaps a salt or similar coming out of the wood? Where are the beams located in your property?

DailyClicker

Emmia said:

Does the white, brush off? is it perhaps a salt or similar coming out of the wood? Where are the beams located in your property?

Thanks, all the beams are on the first floor (with loft space above it)

The white patches do come off with heavy brushing / wiping with hot water + vinegar

FreeBear

Old building ?

I suspect it might be lime from some very old plaster or limewash/distemper. Brush off any dust, wipe with a damp cloth but keep the vinegar for your chips - Acid damages wood.

To protect the wood, give it a coat of linseed oil, not varnish or any modern paint.