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Question DetailsAsked on 7/2/2016

is it okay to use log oil on cedar siding?

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1 Answer


Yes and no - any penetrating oil will significantly darken the wood, so definitely try it out on a sample scrap first to be sure you like it. Also, linseed or flax or similar plant-based oils tend to support mold, which is a problem on cedar in the first place, so if you go with oil (which is my preference on rough cut siding) I recommend a penetrating mildew and mold-resistant prodcut like Brazilian Rosewood Oil - also there are some other tropical wood penetrating oils sold as Austraulian Log Oil and such. The ancient turpenol and creasol type log oil (used to be used for cabins and wall tent platforms and outdoor park benches and such) heavily darkens the wood but protects very well - but hard to get since California outlawed it there. Also, if put on too thick or doulbe-coated over a first layer that is not 100% dried, become permanently sticky.

I recommend, if looking at oils, check out brand name manufacturer sides for recommendations - Sikkens and Penofin are a couple of brands I trust for oils, as well as Olympic in general for exterior stains and oils.

Note there are a number of mildew and mold inhibiting additives that are non-discoloring (except sometimes on pure white paints) that run about $1-2/gallon - well worth adding this in addition to anything already in the finish for damp area finishes (exterior and bathrooms and basements, etc) - makes a very significant difference in mold resistance.

Answered 3 years ago by LCD

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