Forum Discussion
westend
Jun 22, 2018Explorer
Typical rubber roof on RV's probably 10 years in AZ or other sunny climes, 15->20 years up North or in shade. That is the UV part of the degradation. Molds and dirt will attack rubber, too, as will mechanical action (poor glue-up on installation causing membrane to lift when in transport).
A good mold abatement is installing mild Zinc strips so that water runoff from rain will carry the Zinc Oxide across the membrane. Copper works somewhat less efficiently and is more expensive.
I've installed the Zinc strips on residential roofs where tree cover is close to 100%. An owner with a shallow roof slope and tree cover, that previously had a green/black roof from various fungi, now has a clean roof. Since aftermarket or after-installation of metal strips can be cumbersome, placing a bare copper wire across the roof on either side of the ridge can be an easy deterrent. Those with flat RV roofs will need to get inventive for metal placement.
A good mold abatement is installing mild Zinc strips so that water runoff from rain will carry the Zinc Oxide across the membrane. Copper works somewhat less efficiently and is more expensive.
I've installed the Zinc strips on residential roofs where tree cover is close to 100%. An owner with a shallow roof slope and tree cover, that previously had a green/black roof from various fungi, now has a clean roof. Since aftermarket or after-installation of metal strips can be cumbersome, placing a bare copper wire across the roof on either side of the ridge can be an easy deterrent. Those with flat RV roofs will need to get inventive for metal placement.
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