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Heat dissipation and protection of a galvanized roof

My house have a galvanized roof and I would like to:

1-Paint it with a paint that can help dissipate the heat.

2-Paint last longer.

3-Know the best way to paint it, due to is a waive form surface.

Ismael Latorre
- Mayaguez, Puerto Rico

Self-Etching Primer
on
Amazon

(affil links)

Hi, Ismael. There are ceramic paints and white paints which can reduce the thermal load. However, getting good adhesion to galvanized metal is usually an issue. I would suggest scrubbing the roof with a brush and trisodium phosphate [on eBay or Amazon], then wiping with vinegar [in bulk on eBay or Amazon], then applying a latex Galvanized Metal Primer [affil links] before applying any top coat. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
June 1, 2009

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