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Old 02-27-2012, 07:50 PM   #16
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Please help!!! Weird white streaks on wall


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Originally Posted by ric knows paint View Post
Wow...thank you for all the kind remarks. Now I kinda feel bad about making all the stuff up...
Well If you can't amaze them with knowledge baffle them with bull.


Last edited by Nailbags; 02-27-2012 at 08:54 PM.
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Old 02-28-2012, 04:11 AM   #17
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Please help!!! Weird white streaks on wall


Here is a question for ric. Would really cheap paint be more likely to do what this is?
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Old 02-28-2012, 07:54 AM   #18
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Please help!!! Weird white streaks on wall


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Here is a question for ric. Would really cheap paint be more likely to do what this is?
I don't know if you noticed how vague and non-committal I was in my earlier post, but that was kind of intentional. Frosting is not an simple problem to diagnose (especially from pics) and it's even more difficult to predict. So the answer to your question is an absolute perhaps...

It makes sense that a less expensive paint would be more prone to frosting than would a higher quality line, but it can happen with any product that contains calcium carbonate. It's usually more of an unsightly nuisance than a structurally damaging problem - and it's more noticeable on darker colors than it is on lighter colors (whites especially). The reason a lesser quality line might be more likely to frost is due to these factors, (1) less resin (than quality products) may result in the more coarse, filler-type pigments not being as completely bound, which may allow these pigments to "float" freely to the surface with the evaporative solvents (especially when tinting colors are introduced to the mix)...(2) lesser quality resin (than quality products) may be more susceptible to dilution from over-thinning, humidity, etc...which, again may lead to these specific pigments be less than completely bound...and (3) lesser quality paints will always have a higher ratio of filler to prime pigments, and a higher ratio of pigment to binder than will a premium product - both situations could result in this paint film predicament under the right, or actually wrong, conditions.

Generally speaking, these are not defectively designed products. Calcium carbonate is a necessary, and economical, component of paint (one of your alternatives to calcium is...um...dirt - sometimes known as clay). Or to exclude pigments such as calcium, and replace it with a finer, primary type of pigment, would not only result in higher prices, but may do so at the expense of performance issues, such as structural integrity, hiding (dry-hiding, but hiding none-the-less), film build, sheen, etc... Prime pigments (tio2, zinc ox, et al) will generate wonderful benefits - up to a point - then, once that "point" is exceeded, you will experience, first hand, the law of diminishing return.

I'm sorry for the long winded response...It's my inability to answer questions succinctly that may explain why I have no friends and why my wife usually falls asleep within moments of asking how my day went.

Last edited by ric knows paint; 02-28-2012 at 08:29 AM.
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Old 02-28-2012, 04:31 PM   #19
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Please help!!! Weird white streaks on wall


[quote=ric knows paint;865527]I don't know if you noticed how vague and non-committal I was in my earlier post, but that was kind of intentional. Frosting is not an simple problem to diagnose (especially from pics) and it's even more difficult to predict. So the answer to your question is an absolute perhaps...

It makes sense that a less expensive paint would be more prone to frosting than would a higher quality line, but it can happen with any product that contains calcium carbonate. It's usually more of an unsightly nuisance than a structurally damaging problem - and it's more noticeable on darker colors than it is on lighter colors (whites especially). The reason a lesser quality line might be more likely to frost is due to these factors, (1) less resin (than quality products) may result in the more coarse, filler-type pigments not being as completely bound, which may allow these pigments to "float" freely to the surface with the evaporative solvents (especially when tinting colors are introduced to the mix)...(2) lesser quality resin (than quality products) may be more susceptible to dilution from over-thinning, humidity, etc...which, again may lead to these specific pigments be less than completely bound...and (3) lesser quality paints will always have a higher ratio of filler to prime pigments, and a higher ratio of pigment to binder than will a premium product - both situations could result in this paint film predicament under the right, or actually wrong, conditions.

Generally speaking, these are not defectively designed products. Calcium carbonate is a necessary, and economical, component of paint (one of your alternatives to calcium is...um...dirt - sometimes known as clay). Or to exclude pigments such as calcium, and replace it with a finer, primary type of pigment, would not only result in higher prices, but may do so at the expense of performance issues, such as structural integrity, hiding (dry-hiding, but hiding none-the-less), film build, sheen, etc... Prime pigments (tio2, zinc ox, et al) will generate wonderful benefits - up to a point - then, once that "point" is exceeded, you will experience, first hand, the law of diminishing return.

I'm sorry for the long winded response...It's my inability to answer questions succinctly that may explain why I have no friends and why my wife usually falls asleep within moments of asking how my day went.[/quote]


At least she asks

Looking at the pics, just seems like cheap looking paint, not applied properly.
I cannot say I have ever seen "frosting", in fact,I never heard that term till just recently on here.

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