Cedar Shakes... Sealer????? - Woodworking Talk - Woodworkers Forum
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post #1 of 5 Old 08-01-2012, 10:38 PM Thread Starter
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Cedar Shakes... Sealer?????

Hi, I covered our whole house with Cedar Shakes about 20 years ago. Well, now they have all turned black, I am told that the black is a kind of mold. So, I bought a power washer and power washed thwe WHOLE house. It came out very good.
My question is: what can I use to seal the shakes so they will not turn black to quick? Some people said to use Thompson's some people said NOT to use Thompson's. So, I thought I would ask the experts. Thanks in advance for any help.
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post #2 of 5 Old 08-01-2012, 10:49 PM
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Log oil. We use SuperDeck log oil on cedar shingle roofs. But there are other good brands, look at what is available locally.

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post #3 of 5 Old 08-01-2012, 11:07 PM
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Back in the day when I painted houses for a living, we really liked a Flood product called CWF (Clear wood finish).

That bowl was perfect right up until that last cut...
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post #4 of 5 Old 08-02-2012, 11:10 AM
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Check out this suppliers site. They have some good tutorials and a selection of some of the best products. http://www.opwdecks.com/

The last cedar shingle restoration I did, I used Defy products, oxygen bleach, wood brightener and their original clear. Now there are newer products. On vertical siding, I get about 6-8 yrs depending on exposure.

Thompson's does a lot of advertising. Some of us that have used it don't find it to last more than a few months and it seems to promote mildew growth. Flood's CWF used to be a great clear but that was back before the EPA stopped the use of certain additives. I was very disappointed with it the last time I used it. Products keep changing, their latest products may be an improvement but I haven't used them.
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post #5 of 5 Old 08-03-2012, 01:32 AM
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I wish I could remember the specific product. More important than preserving the shingles there is a sealer made for shingles that makes them almost fireproof. Cedar shingles especially when they get old get so flammable that a bottle rocket can burn your house down.
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