The Rohm and Haas Paint Quality Institute Where a great paint job begins
home press room design center content partners FAQs quality paint shop PQI
   
do it yourself
do it yourself for the contractor for the seller and specifier resource library

featured article 
color designer
project planner
color trends
design center
prep, prime & paint
infosheets
problem solver
calculator
choose a contractor
how to paint...
DIY newsletter
RSS news feeds

Sign up for our PaintInsights Newsletter






 

Prep, Prime and Paint: Exterior

Metal

Unpainted/To Be Painted

a. Surface Preparation:

  • 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
  • if any rust is evident, remove as much as possible by wire brushing; wear eye protection, dust mask and work gloves
  • remove dirt, treated mildew, loosened rust, etc. by scrubbing with detergent and water, and rinse thoroughly; or power wash with plain water


b. Priming:

  • apply a latex or oil-based exterior corrosion inhibitive primer to the entire area
  • use two coats of primer for maximum corrosion resistance
  • for copper, brass or other copper-containing alloys, use only a primer recommended for these materials, or discoloration of the finish coat may occur


c. Painting:

  • use top-of-the-line exterior 100% acrylic latex house paint in flat, satin, semi-gloss or gloss finish (depending on appearance desired) that is recommended for primed metal of the type you are doing
  • direct-to-metal products may be used, following manufacturer’s directions closely, with or without primer; but best results will be obtained using a metal primer
  • direct-to-metal (DTM) gloss latex products may be used for ferrous metals, following manufacturer’s directions closely, with or without primer; but best results will be obtained using a metal primer
Back

Site Map | Webmaster | About PQI | Links
Copyright ©2000-2008 The Rohm and Haas Paint Quality Institute.
All Rights Reserved. Terms and Conditions | Privacy Statement |   PQI France PQI Germany PQI Sweden PQI UK PQI South Africa PQI China PQI Russia PQI Brazil PQI Australia/New Zealand