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Old 05-10-2012, 07:37 AM   #1
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Clapboard exterior w/ Mildew - Need to paint.


I had a question about painting clapboard exterior. The front of my home had its clapboard replaced within 5-6 years ago. The surface is covered with mildew stains. There is no paint flaking or peeling. My question is, what steps do I need to take in order to properly paint the front of my home? I was going to powerwash, then prime it then paint it. I was going to use BM primer and their paint. Any recommendations?

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Old 05-10-2012, 08:07 AM   #2
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Clapboard exterior w/ Mildew - Need to paint.


First figure out why it's molding up. Over hanging trees that need trimming, brushes in contact with the siding.
Your going to want to kill the mold with mixture of bleach and water and let it sit for at least 15 min. before pressure washing.
I also would add a mildicide to the paint.
http://www.epaintstore.com/Jomaps-Ad...ide-paint.html


Last edited by joecaption; 05-10-2012 at 08:12 AM.
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Old 05-10-2012, 08:26 AM   #3
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Clapboard exterior w/ Mildew - Need to paint.


The house had overgrown bushes and hedges that were in contact with the home. They have since been removed and the landscaping has been cleaned up with hedges and bushes and what not moved farther away from the home. I was thinking about using Ben Moore oil based primer and I guess their paint already contains mildicide. Is my choice of exterior paint and primer a good choice? My other question is since there is no paint flaking or peeling, do I need to sand it? or can I get away with bleeching the mildew and then power washing, drying it a few days and then priming / painting?
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Old 05-10-2012, 08:30 AM   #4
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Clapboard exterior w/ Mildew - Need to paint.


BM is good paint. Why are you priming?
If there's no bare wood it should not need priming.
Are you getting your paint from a BM store? Ask them these questions, there the experts.
Never take the advice from a Box store.
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Old 05-10-2012, 11:02 AM   #5
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Clapboard exterior w/ Mildew - Need to paint.


I was under the impression that I needed to prime because of the mildew. My last question, there are stainless steel nails that secure the clapboard to the house. In 2 or 3 spots throughout the front of the house the puddy that covers the nail heads fell out and the nail head is exposed. What should I use to cover that, is it a puddy of some sort? or is there something special that i need to buy for exterior? Does it need to be sanded down? Im assuming that it will need to be primed?

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Old 05-10-2012, 01:14 PM   #6
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Clapboard exterior w/ Mildew - Need to paint.


No need to prime. Kill the mold, spackle the nail holes. Sand & Prime the spackled spots and fling some paint at the siding.
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Latex Primer: Good for Drywall, that's about it.
Behr Paint: The plastic buckets are good, that's about it.
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Old 05-10-2012, 05:36 PM   #7
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Clapboard exterior w/ Mildew - Need to paint.


Where fungi are concerned, stay away fro alkyds (Oils). Mildew feeds on organic matter and oils are very organic. Use a top-quality 100% acrylic primer; it will be more mildew-resistant and move with the wood as it expands and contracts.

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