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Mildew resistent paint for covered patio

5K views 15 replies 4 participants last post by  ToolSeeker 
#1 ·
Hello fellow DIY'ers. I live in Florida and have a large covered patio. The ceiling is made of beadboard. I don't remember what I used to paint it the first time but over the years, it got pretty mildew. I have been cleaning it and now want to repaint it but would like to keep the mold/mildew away for as long as possible.

There is a product called Zinsser Perma-White Mold & Mildew reistent paint. I was also told today that PPG Porter has a product called Portersept. Both of these have a limited warranty against future mildew.

I know there are also mildewcides that you can add to paint.

Had anyone used either of these products and had them up long enough to see if they work?

I also noticed that my local Home Depot has another Zinsser product that is a primer that it says you can paint ON TOP of the mold and mildew to kill it. That sounds pretty scary to me.

Would love some advice/help. I am a recent widow and I am trying my best to keep my home up and running and well-maintained.:huh:
 
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#2 ·
Most exterior paint products have mildewcide in them to resist mildew growth on the surface of the paint film. Generally, mildew cannot be painted over, as it will grow through paint film and the paint needs to be removed completely.

There is nothing to make paint mildew-proof, as it is influenced by the environmental conditions (mainly humidity, moisture, shade, vegetation). It is not uncommon that regular cleaning is a required practice to remove mildew, which is basically an airborne mold.
 
#3 ·
Thanks Will22. The Zinsser Product and the Portersept have 5 and 7 year warranties against mildew. I can't really remember how many years it took for the mildew to get bad on the back patio but it seemed like it was longer than that. If I can get a product that will keep the mildew away for 7 years, I will be VERY happy.
 
#5 ·
Backyarder, thanks for reminding me about exterior mildew. What part of Fla are you in?

An upcoming project I have is painting my ceiling on an enclosed porch. I didn't consider mildew since there isn't any now, just paint peeling off seams.

Wonder what was used last time? Ill be sure to check out mildew resistance paint.
 
#7 ·
I didnt know that about circulation. Thanks. Melbourne is nice. You have more restaurants around you than I have. I used to live in Indiana River Co and went to Melbourne a lot. I'm in Volusia county now. I bought a 30 yo house and am 99% done with updating it myself and couldn't have done it without everyone here.

When I moved in 2 yrs ago I threw out a bunch of old paint cans. Now I wish Id read the labels and I might have learned what the last owner used on my porch ceiling.
 
#8 ·
That is cool, Startingover. That you re-did a house yourself. I am laughing about your comment on throwing away paint cans. My husband and I cleaned out our "shed" just last year and threw out a bunch of stuff. It was silly of me to not write down what we had so I would at least have the right names of the colors. Yes, circulation will help cut down on the mildew. Lots of sites online say that you should keep the ceiling fans running if you have them. My husband used to always run them and I worried about the electricity. No I am paying for it by spending HOURS cleaning the mildew before I can repaint.
 
#10 · (Edited)
. Heres the back porch with peeling paint. Im waiting till cooler weather to work on it besides it kills my arms to work overhead and I just finished months of scraping wallpaper so taking a little break.

I have to say I like the activity from working on my house and it helps me to keep in shape. I find gyms tedious. Plus look at the $$ it saves.
 
#12 · (Edited)

This is my bathroom, the 3rd room where I removed dated wallpaper. I learned, on this site, how to do this and the best primer to use. I removed the huge mirror and replacing it with a smaller framed mirror. Im in process of painting. I take lots of breaks for naps and ice cream. The perks of working for yourself. :wink: The light blues I considered were too much like a baby blue, then someone suggested a grayish blue which I like (not the sample shown here)

Sorry the photo turned sideways after posting.

PS
You have a nice porch. For me its my flabby biceps that get sore. Sounds like you'll be painting a lot sooner than me so Ill be waiting to hear what product you choose.

On mildew, my last house was CBS and I never had mildew trouble. One neighbor has a CBS house here and he doesn't have mildew, but another neighbor with a frame house has mildew.
 
#14 ·
Guys I also live in central Fla. and I have painted many lanai's using Ben Moore
sw and PPG/Porter and have never had trouble with mildew. In fact almost every house I have painted has the screened in area a lot of them have swimming pools in the enclosure. And to be honest I can't remember one that had mildew when I started and I haven't ever had a call back.

Are you sure what you are seeing is not the green pollen we get down here every year. And maybe it wasn't cleaned off before you bought the house.
 
#15 ·
Mildew

Hi toolseeker. We built the house, so I know the mold/mildew wasn't here when we bought it. It is definitely mildew. And I'm REALLY surprised you have never seen mildew on a porch ceiling. It is very, very common in my neighborhood. I'm sure part of it is that we live on a very wooded lot and the trees keep the property very shaded and humid.
 
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