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Need Help W/ Ext Paint Bubbling!

 
 
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Old 09-18-2010, 07:44 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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Originally Posted by RadRemod View Post
the back of the bubble it was white, the previous color. Appears to go at least a coat or two beneath my new coat.
Suggests the problem isn't with your paint


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Previous painter had just scraped and painted(college pros)
hmmm...
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Old 09-18-2010, 09:53 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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I agree, but from where? And yes I already have soffit vents running around my home, but not siding vents.
How old is the house?

If there is no vapor barrier on the inside, moisture could be going through the walls from the interior of the house.
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Old 09-18-2010, 10:11 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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How old is the house?

If there is no vapor barrier on the inside, moisture could be going through the walls from the interior of the house.
If that's the case, would he need to put siding vents every 16", towards the top of each wall?

More vents that that?

..or something else completely?
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Old 09-18-2010, 11:58 AM  
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Re: Need Help W/ Ext Paint Bubbling!


If you post pictures of the issue we might be able to help more. My solutions stop if you have vents running your soffits because that should reduce the heat coming out of the attic down the wall boards. Maybe pics of what it looks like when you strip the bubbles off and some pics of the overall house where the issues are coming up.

To me though, it's sounds like you shouldn't be having this problem, but that's why we are all here, to sort issues out. I'd love to keep updated with this for my future encounters. I'm sure everything here you have heard from your paint reps so its really a guess and check I believe now. The question is how much time do you have to put into your house...
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Old 09-18-2010, 12:35 PM  
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Re: Need Help W/ Ext Paint Bubbling!


Shane- the house was built in 1964

Dribblz-I'll try to get some pictures taken and up today. I'm planning on being at the house for a while now so I'd like to find and fix the problem not just the symptom. Then I wont have to screw with it again. Also it will give me a game plan if it happens to someone else.
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Old 09-18-2010, 08:45 PM  
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Re: Need Help W/ Ext Paint Bubbling!


your neighbors havent had new windows put in recently have they?
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Old 09-18-2010, 09:32 PM  
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Re: Need Help W/ Ext Paint Bubbling!


No old crappy aluminum Ibelive. Why?
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Old 09-19-2010, 12:22 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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Suggests the problem isn't with your paint




hmmm...

That it was older paint under the bubble suggests that it wasn't moisture either. Those would almost always go down to bare wood.
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Old 09-19-2010, 10:32 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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That it was older paint under the bubble suggests that it wasn't moisture either. Those would almost always go down to bare wood.
Good point.

Maybe the previous painter oil-primed too soon after washing?
Maybe the previous painter's finish didn't adhere to their primer?

In either case, sounds like wetting it with paint caused it to let go and form blisters.

But why wouldn't these blisters have shown up a long time ago after a good rain?

Hey Rad, does it ever rain there?
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Old 09-19-2010, 10:50 AM  
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Re: Need Help W/ Ext Paint Bubbling!


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Good point.

Maybe the previous painter oil-primed too soon after washing?
Maybe the previous painter's finish didn't adhere to their primer?

In either case, sounds like wetting it with paint caused it to let go and form blisters.

But why wouldn't these blisters have shown up a long time ago after a good rain?

Hey Rad, does it ever rain there?
As someone pointed out earlier, this seems to be more of a problem with darker colors. Sometimes, those are solvent blisters, caused by the surface of the fresh paint drying to quickly and trapping water underneath before it can evaporate. Since the OP said that the failure happened between layers of older paint, it sounds more like an incompatability problem in the older paint. I could see it being one of those issues that you mentioned, Steve. The higher surface temperatures as a result of the darker paint could be what caused the problem to show up now.
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Old 09-19-2010, 01:14 PM  
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Re: Need Help W/ Ext Paint Bubbling!


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Good point.


Hey Rad, does it ever rain there?
Steve- We do get a good amount of rainfall over here in OR.


You guys may be on to something with the dark paints. I'm kind of wondering if the college pros paint used was crap and didn't adhear well. I did scrap every single bubble or pealed spot. I'm wonderingif the new darker paint is heating up and lifting the bad paint.

So do I purchase a Paint shaver pro for $8-900 or reside for $20-2500?

I'm just not sold on the siding vents and I think it would look like ass having vents every 16" on the walls.

Last edited by RadRemod; 09-19-2010 at 01:58 PM.
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Old 09-19-2010, 02:09 PM  
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Re: Need Help W/ Ext Paint Bubbling!


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I'm just not sold on the siding vents and I think it would look like ass having vents every 16" on the walls.
They can be painted to match...

(of course since they're plastic, they'll probably peel)

then you can come back here and start another successful thread
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Old 09-19-2010, 02:31 PM  
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Re: Need Help W/ Ext Paint Bubbling!


Just got a few photos! The first is the bubbles on the house. Second a single bubble and third that bubble scraped with only a 4" putty knife in about 5 seconds!

Just noticed something that might help. Its only about 70 degrees here in Salem,OR today but the brown paint is hot to the touch. However the area of paint that I stripped to white paint the other day is still cool. Both are in direct sunlight!

I'm wondering if the dark paint is heating up too much and releasing an old failing layer of paint. Almost like using a heat gun on it. What do you think?
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Need help w/ ext paint bubbling!-house-buubles.jpg   Need help w/ ext paint bubbling!-paint-bubble.jpg   Need help w/ ext paint bubbling!-scraped-bubble.jpg  
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Old 09-19-2010, 02:36 PM  
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Re: Need Help W/ Ext Paint Bubbling!


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I'm wondering if the dark paint is heating up too much and releasing an old failing layer of paint. Almost like using a heat gun on it. What do you think?
Sounds good to me.

Is the "white" the previous paint, or your primer?
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Old 09-19-2010, 02:57 PM  
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Re: Need Help W/ Ext Paint Bubbling!


The white is a previous layer of paint(not sure how deep). My primer was tinted a brown to be about 50% as dark as my top coat.
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Old 09-19-2010, 05:36 PM  
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Re: Need Help W/ Ext Paint Bubbling!


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Just got a few photos! The first is the bubbles on the house. Second a single bubble and third that bubble scraped with only a 4" putty knife in about 5 seconds!

Just noticed something that might help. Its only about 70 degrees here in Salem,OR today but the brown paint is hot to the touch. However the area of paint that I stripped to white paint the other day is still cool. Both are in direct sunlight!

I'm wondering if the dark paint is heating up too much and releasing an old failing layer of paint. Almost like using a heat gun on it. What do you think?
I think you've found the problem. The clapboards look to be in pretty good shape, so they may be worth stripping. If it were my place, I'd strip the siding using heat plates and scrapers, sand, prime, and paint. More importantly, if it were my place, I wouldn't have to worry about RRP.
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Old 09-19-2010, 06:15 PM  
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Re: Need Help W/ Ext Paint Bubbling!


Looks like someone put latex over oil, to me.
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Old 09-19-2010, 08:11 PM  
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Re: Need Help W/ Ext Paint Bubbling!


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Looks like someone put latex over oil, to me.
hmmm..
easy enough to check w/some alcohol.


Hey Rad, if you wipe your hand across that white, does any chalk come off on your hand?
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Old 09-19-2010, 08:35 PM  
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Re: Need Help W/ Ext Paint Bubbling!


Steve- Just went out and rubbed my hand on the white paint and got a little white residue on my finger tips.

What are you thinking?
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Old 09-19-2010, 09:43 PM  
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Re: Need Help W/ Ext Paint Bubbling!


Right now, I'm thinking: "I wonder if he's washed his hand yet"?

I'm also thinking I wish Rad had checked his siding for chalking before he put away his house-washing equipment.


Flat paints chalk, especially on the sunny sides, and worse if it's crappy paint.
I confess I'm not familiar with Miller's Acrilite primer...I suggest you see what it says on the can about putting it on chalking surfaces (some primers are ok w/it)

(might google "paint chalking" too.)


Most importantly remember.... If I had any really good advice, I probably wouldn't be here giving it away for free.

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