Galvanized Vs Painted Roofing

With kynar 500 or hylar 5000 paint finish or its equivalent you will not have to paint over your steel roof for at least 30 years.

Galvanized vs painted roofing.

There are slight differences between stainless steel and galvanized steel. Galvalume steel roofing material has so many advantages to consider with the first one being longevity of life. That s the normal length of warranty on kynar 500 paint finish. Final thoughts on galvalume vs.

Whether it is paint or galvanised steel any coating is designed to protect the base material. Additionally primer and paint adhere better to galvalume coated panels and they carry a 20 year limited warranty while galvanized panels do not making them a smarter long term investment for your customers homes agricultural buildings or commercial properties. It can also be painted and comes in many different looks. With corrugated metal roofing it starts in the 4 00 to 5 00 per sq.

Galvalume metal roofing system properties. That coating isn t as dense. Well first lets address a common misconception. Underneath a painted metal roof there is a galvalume coating.

The standard is a 55 a z coating underneath the painted metal is a 50 a z coating. That s a full installation of say g 60 galvanized steel 29 gauge painted with acrylic or polyester non kynar 500 paint finishes panels charged by the square foot. Both types of steel can be painted to improve durability. Technically yes however hot dipped galvanized steel resists corrosion in numerous environments for much longer than uncoated steel.

Because of the coating this material is resistant to atmospheric corrosion and can last from 50 to 75 years outlasting comparable galvanized roofing material. With that being said the painted metal roof has a 40 year warranty on the paint and 30. Details about galvanized metal roofing are at galvanized steel roofs. Why choose a painted metal roof.

The coating corrodes instead of the core material. In short this is what is meant by the term galvanized it takes its name from the italian scientist luigi galvani. The g 60 refers to amount of metallic finish per sq ft. Expands with heating and cooling.

The rust on galvanized will just continue to spread and get worse because it doesn t have that self healing property. Paint adheres better to galvanized steel than to galvalume so it requires repainting less often. The metal roofing alliance recommends g 90 galvanized steel for roofing which has 90 ounces of zinc per square foot.