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Old 03-15-2014, 01:54 PM   #1
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Cedar shingle preservative


Just bought a house with old, weathered cedar shingles. A few are rotten and need to be replaced now; I'd like to extend the life of the rest as much as possible, while I attend to more pressing matters.

Can I spray with boiled linseed oil and mineral spirits? Will it go through a sprayer? Or better to brush on? Will this even work at all, given that all I can do is coat the outside?

What about using something like Cuprinol? (Is that even still available?)

Any other ideas?

Thanks,
traghel

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Old 03-15-2014, 02:27 PM   #2
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Cedar shingle preservative


I don't know if Cuprinol is still available or not but there are several similar products on the market.

Your boiled linseed oil idea would work, but if your going to go to the trouble to apply a preservative I would suggest something that will last a little longer.

Whatever product you apply, back brushing it into the wood grain will improve performance of the product.

Some options might be; CWF UV, Olympic Max, BM Super Deck.

It's also a good idea to treat the shingles for mildew (bleach solution) and pressure wash them before sealing.

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Old 03-16-2014, 11:23 AM   #3
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Cedar shingle preservative


Thanks. Those are good suggestions.

Flood and Olympic, at least, both seem to have "natural" or "clear" products, but confusingly the web sites lump them in with their "stains." I don't want to change the color of the shingles at all, or add any kind of visible coating, though I suppose some darkening is inevitable.

How much will CWF-UV natural, Olympic clear, etc. change the appearance of the shingles?
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Old 03-16-2014, 12:06 PM   #4
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Cedar shingle preservative


Olympic max clear is probably going to add the least amount of color out of the products I have used. It basically makes the wood look 'wet'

This is a pic of the Olympic going on cleaned logs. Not a very good pic, but you can see how it changes the appearance. It's not quite so dark after it dries all the way. Sealing the wood with the least amount of color change was the goal on that job.
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Old 03-16-2014, 12:11 PM   #5
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Cedar shingle preservative


Very helpful. Thank you.
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