Best paint for OSB shed walls?

Lamar Havard
by Lamar Havard

I've built a storage shed for my garden supplies out of OSB instead of plywood, and was wondering about the best paint to keep moisture out for as long as possible.

  10 answers
  • Cynthia H Cynthia H on Aug 15, 2018

    Hi Lamar! Honestly, I would recommend putting siding on it instead of painting. However, if you are determined to paint it, use a good exterior paint.

  • Dfm Dfm on Aug 15, 2018

    Oil base paint, consider siding or shingles for added protection

  • Shore grandmom Shore grandmom on Aug 15, 2018

    You could try a marine paint.

  • Lamar Havard Lamar Havard on Aug 16, 2018

    THX everybody! I may just do a board and batten and seal it really good.

  • Jack Jack on Aug 16, 2018

    Regular deck paint should do good. NOT deck STAIN>

    Be dure to cover bottom egd. Caulk all seams an joints first.

  • Dick wold Dick wold on Aug 16, 2018

    check with Menards, Lowes, or Home Depot they may have some slightly damaged siding you could purchase at a Discount.

  • Lov30865216 Lov30865216 on Aug 17, 2018

    Hi, you have a cute shed there but if you paint over OSB it would be a real shame and a mess. OSB will absorb any and all moisture and swell, then it will kick the paint off and rot.

    If you really need to buy some time before you get siding, the very least I would do is wrap it in tar paper. It is cheap and will let the rain fall right off of it.

    When you do add siding, try to use something that is the same as or similar to your home; it will look more professional. I also hope you are following city or county codes. Good luck

  • Debra Marlow Rowe Debra Marlow Rowe on Mar 18, 2022

    I would say you may be best served installing a vapor paper and cover that over with a siding ... sorry. That stuff crumbles pretty quick. Love your door ...

    • Lamar Havard Lamar Havard on Mar 23, 2022

      Thanks! My first self-built door. Would you believe a couple of days after I posted this, I found a gallon of gray Sherwin Williams 'WeatherShield', that someone had returned to Lowes because it was the wrong color, for $10! I painted it, and come Sep. 20th, it'll be 4 years, and it looks like I just did it yesterday! It hasn't peeled or flaked, and the OSB looks exactly the same. Great paint!

  • Debra Marlow Rowe Debra Marlow Rowe on Mar 24, 2022

    pics of the painted end result? Really impressed.

  • Debra Marlow Rowe Debra Marlow Rowe on Mar 27, 2022

    well done!