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Old 08-07-2016, 07:36 PM   #1
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Default Quick deck question

Recently stained an old, very porous deck with California oil semi solid...like a rustic red... Cleaned it well... Homeowner is asking me about some areas that are turning white... No peeling. Haven't seen it yet. Anyone ever heard of this with oil?
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Old 08-07-2016, 09:45 PM   #2
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Old 08-07-2016, 11:11 PM   #3
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Did you get rain within 24-48 hours? I know with latex that means certain chemicals did not have a chance to evaporate before the moisture appeared


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Old 08-07-2016, 11:52 PM   #4
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It didn't get white spots for a few weeks. No rain 48 hrs before... But it has been raining here in Kentucky all the time.
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Old 08-08-2016, 04:22 AM   #5
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Default White spots on your deck, with an E.

How are you sure it didn't get white spots on it for a few weeks? Not being argumentative, just trying to help and narrow the list of possible issues here. It wouldn't have been visible while you were applying, but did you see deck 2-3 days after you applied the stain?
Did you perform a moisture test before staining, and if so, what was it?
How soon did it rain after?
Most commonly attributed to rain shortly after staining, spots will be typically be small & round. Can happen to the best of us when unforeseen weather brings rain soon after application.

It's not surfactant leaching if you applied oil, and if moisture wasn't an issue before, during or shortly after application, then the only guess I have might be pitch bleed, which tends to be more prevalent the hotter it gets, especially with pine decks. See if the white spots are either sticky or crusty, usually around knot holes. If so, it's a good thing, because you did nothing wrong. If not, go back and re-address moisture as the #1 culprit.
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Old 08-08-2016, 08:21 AM   #6
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Quote:
Originally Posted by stelzerpaintinginc. View Post
How are you sure it didn't get white spots on it for a few weeks? Not being argumentative, just trying to help and narrow the list of possible issues here. It wouldn't have been visible while you were applying, but did you see deck 2-3 days after you applied the stain?
Did you perform a moisture test before staining, and if so, what was it?
How soon did it rain after?
Most commonly attributed to rain shortly after staining, spots will be typically be small & round. Can happen to the best of us when unforeseen weather brings rain soon after application.

It's not surfactant leaching if you applied oil, and if moisture wasn't an issue before, during or shortly after application, then the only guess I have might be pitch bleed, which tends to be more prevalent the hotter it gets, especially with pine decks. See if the white spots are either sticky or crusty, usually around knot holes. If so, it's a good thing, because you did nothing wrong. If not, go back and re-address moisture as the #1 culprit.
It is pine and there was sap bleeding or pitch bleeding on deck in some spots that we noticed when staining. But those sap areas will turn white? It has been brutally hot here in Kentucky when it's not been raining.
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Old 08-08-2016, 10:08 AM   #7
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It is pine and there was sap bleeding or pitch bleeding on deck in some spots that we noticed when staining. But those sap areas will turn white? It has been brutally hot here in Kentucky when it's not been raining.
They can. Not saying for sure that this is what happened in your case. Did it rain shortly after staining?
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Old 08-08-2016, 12:03 PM   #8
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Quote:
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They can. Not saying for sure that this is what happened in your case. Did it rain shortly after staining?
It was pitch bleed. Finally got pictures. Like I said, we saw several areas where there was sap bleeding when we were staining. Thx you've been a huge help stelzer!!!

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Old 08-08-2016, 12:29 PM   #9
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Glad you got to the bottom of it. Tell the HO they can wipe areas with turpentine to remove the pitch, but don't try to promise any fixes for them. Some pitch pockets in wood dry up, some seem to just keep oozing, especially when it gets hot out. Only guaranteed way to fix is replacement.
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Old 08-08-2016, 01:02 PM   #10
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Originally Posted by stelzerpaintinginc. View Post
Glad you got to the bottom of it. Tell the HO they can wipe areas with turpentine to remove the pitch, but don't try to promise any fixes for them. Some pitch pockets in wood dry up, some seem to just keep oozing, especially when it gets hot out. Only guaranteed way to fix is replacement.
Especially if it's new growth.
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