LumberJocks

White powdery-looking discoloration on old walnut

  • Advertise with us

« back to Finishing forum

Forum topic by Alan S posted 11-11-2011 10:40 PM 723 views 0 times favorited 2 replies Add to Favorites Watch
View Alan S's profile

Alan S

172 posts in 2037 days


11-11-2011 10:40 PM

Maybe 20 years ago my granddad built some decorative light boxes out of walnut. I’m not sure what kind of finish he used, but it is a non-film finish. So some kind of oil I guess. I have one of these treasures and some of the wood has this white streaking discoloration on it that can’t be cleaned off. Does anyone have any idea what that might be? I can post a picture tonight if need-be. Thanks!

Alan


2 replies so far

View Bill White's profile

Bill White

3532 posts in 2680 days


#1 posted 11-16-2011 01:32 AM

MOLD!!!! YOU WILL PROBABLY DIE!!
Just kiddin’ of course.
Maybe a light sanding and a re-coat with BLO?
Bill

-- bill@magraphics.us

View reggiek's profile

reggiek

2240 posts in 1990 days


#2 posted 11-16-2011 02:21 AM

definitely sounds like some kind of fungus. Depending on the type of finish….you could wipe it down with a very dilute mix of bleach and water (very dilute – 1 part bleach to 25 parts water). Try the mixture on a test piece that is not visable before using it on the visable parts. It will take a day or so for the bleach to start killing the fungus and it’s spores.

Sanding and refinishing as mentioned above will work also – wear a good mask (some of those spores are toxic) and be prepared to clean or change your sandpaper frequently. This method may be necessary if the bacterial has stained the wood any deeper than just surface marring.

-- Woodworking.....My small slice of heaven!

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase