Galvanized Vs Painted Roofing

With corrugated metal roofing it starts in the 4 00 to 5 00 per sq.

Galvanized vs painted roofing. Galvalume steel roofing material has so many advantages to consider with the first one being longevity of life. 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. The g 60 refers to amount of metallic finish per sq ft. There are slight differences between stainless steel and galvanized steel.

Technically yes however hot dipped galvanized steel resists corrosion in numerous environments for much longer than uncoated steel. The standard is a 55 a z coating underneath the painted metal is a 50 a z coating. That coating isn t as dense. Both types of steel can be painted to improve durability.

Details about galvanized metal roofing are at galvanized steel roofs. Galvalume metal roofing system properties. 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. Whether it is paint or galvanised steel any coating is designed to protect the base material.

In short this is what is meant by the term galvanized it takes its name from the italian scientist luigi galvani. Underneath a painted metal roof there is a galvalume coating. Also see complete list of types properties of metals used in roof systemsfor more about galvanized steel roofing. Well first lets address a common misconception.

Because of the coating this material is resistant to atmospheric corrosion and can last from 50 to 75 years outlasting comparable galvanized roofing material. The rust on galvanized will just continue to spread and get worse because it doesn t have that self healing property. 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. The metal roofing alliance recommends g 90 galvanized steel for roofing which has 90 ounces of zinc per square foot.

Paint adheres better to galvanized steel than to galvalume so it requires repainting less often. Galvanized steel is more durable than most other material utilized for building. With that being said the painted metal roof has a 40 year warranty on the paint and 30. Expands with heating and cooling.

The coating corrodes instead of the core material. It can also be painted and comes in many different looks. Final thoughts on galvalume vs.