Stucco

Previously Painted/Flaking or Peeling/With Conventional Paint

a. Surface Preparation:

NOTE‚ If lead is suspected in the paint, do not attempt to scrape, sand, power wash, use heat gun, etc., which might put lead into the environment, but rather contact a contractor qualified for lead assessment and abatement

• remove all loose or poorly adhering paint by scraping, or by hand wire brushing using a stiff metal wire brush; wear eye protection, work gloves and a dust mask; or power wash with plain water, taking care to not drive water into cracks or porous areas
  
• if efflorescence is present, remove by hand wire brushing; wear eye protection and gloves; try to identify and
• scrape out and widen any cracks; brush out dust, and seal with 100% acrylic or siliconized acrylic caulk; make second application in several hours if needed; wall and chimney caps must be sound and continuous; chimney flue should have rain cover
  
• treat any mildew with a 3:1 water:household bleach mixture, leaving it on for 20 minutes and adding more as it dries; wear eye and skin protection; rinse thoroughly
  
• remove dirt, chalk, dust, residual particles of paint, unbound sand, treated mildew, etc. by scrubbing with detergent and water, and rinse thoroughly; or power wash with plain water, taking care to not drive water into cracks or porous areas

b. Priming:

• after preparing the surface, apply exterior latex primer for best durability, uniformity and resistance to efflorescence and mildew
• use quality exterior latex primer that is recommended for masonry surfaces
  
• do not leave a primer unpainted

c. Painting:

• 
  use top-of-the-line exterior 100% acrylic latex house paint in flat, satin, or semi-gloss finish, depending on appearance desired; or a quality latex masonry paint