Painting - Exterior paint mildew

I own a 280 year old cape style home .I have a real mildew problem on the north east side of my house .
(It gets a lot of shade)
No matter how well I sand or prime it returns
within a year . What is causeing this and how can I
stop it ??

You can kill mold and mildew with a bleach and water solution, spray it on and let it sit 15 minutes and rinse off. There are also paint additives which retard the growth of mold and mildew that can be found at the better paint stores. Being sure to kill and clean the existing mold before re-painting. In a quik search I also found these links to products that are directed to your problem. Hope this helps.

http://www.radixinc.com/assoc/wash/sprayer.html

http://www.zinsser.com/press/1999/jomax_cleaner.html

Hello - Chipfo. ,

Thanks for the information I'll give this
a try in the spring .Sounds like it may do the trick .
I'd love to find out if there are paints that are more
conducive to mildew or not.
IE: latex vs oil base or Sears Weather beater vs Dutch boy
or any of the others . I've been using the sears best latex.
If you have any ideas on this let me know.

Again - thanks for the help!!!

Most top quality paints claim to be mildew resistant, there are mildewcides that can be added for further protection. Both Sherwin Williams and Ben. Moore claim there top exterior latex paints (SW's A-100 and Superpaint, or BM's MoorGard exterior) resists mold and mildew.

Other things you can do is trim away any branches or brush in contact with the house, trim the trees for more sunlight and air-flow and of course keeping an eye on it and removing any mildew at its starting point.

Latex is going to be your best bet for exterior house paint. I have never used Sears so I cannot comment on it correctly, but maybe someone here has and will post.

Hope this helps,