What Is The Best Procedure For Cleaning And Painting Over Mold?

Mold cleaner


I am planning on painting a small duplex from the 1940’s that was last painted 15 years ago and had a mold issue.  My question is how to properly strip and clean the wood with your “Earth Clean” product and then use “Lime Prime” as primer with two topcoats of your “Clear Skies Satin”.

Based on the pictures you sent me, there does appear to be a moisture issue, where water vapor is exiting the building through the siding, thus pushing off the coating. The overhangs also have water coming through the roof. We would check the insulation inside and try to put a vapor barrier inside. If that’s not possible I would increase the sheen of the paint on the walls to a semi gloss. For the roof / overhang area we would check the drip edge and make sure that is working and in good shape. Then we would proceed with paint.
For this house, the mold does not appear to be killed. Earth Clean diluted 1 quart per gallon can be sprayed on the surface, left for 30 minutes and then pressure washed off. When dry, orbital sanders with 50-80 grit sandpaper, would help a great deal.  Then prime all bare wood and stained areas with Mountain XT Clear 00 at least once. Maybe twice. Then Lime Prime everything followed by two coats of Lime Seal.
1. Sand any loose paint off.
2. Spot prime any bare wood with Mountain XT Clear 00.
3. Lime Prime entire surface.
4. Lime Seal x 2 coats.
Caulk gaps as needed but only if all water issues are addressed (never seal in wet wood or it will rot). Caulk is applied after Lime Prime, before the Lime Seal.
Not everyone would do this level of prep and coating on this house. But I’m just laying out a professional finishing schedule so you can see how that would be done. Good luck on your project and let us know how it goes! 
Earthpaint is in no way liable for unintended uses of this information. Sample Pints are recommended. Please, create a completed sample board for approval in advance. Test as deemed appropriate to make sure no allergic sensitivities exist. Be sure to Read TDS (Technical Data Sheets), MSDS (Manufacturer Safety Data Sheets) Labels, How To’s and Product Web Page before using recommended products

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