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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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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

Primer for Galvanized Metal
primer_for_galv

on eBay or

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 ⇦ this on eBay or Amazon [affil links] , then wiping with vinegar ⇦in bulk on eBay or Amazon [affil links] , then applying a latex Galvanize Primer ⇦ this on eBay or Amazon [affil links] [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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