Galvanized Vs Painted Roofing

Galvanized steel is more durable than most other material utilized for building.

Galvanized vs painted roofing.

The problem with galvanized metal painted or not is that once it starts to red rust it doesn t eventually stop as galvalume does. The g 60 refers to amount of metallic finish per sq ft. There are slight differences between stainless steel and galvanized steel. Both types of steel can be painted to improve durability.

Also see complete list of types properties of metals used in roof systemsfor more about galvanized steel roofing. Details about galvanized metal roofing are at galvanized steel roofs. 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. Whether it is paint or galvanised steel any coating is designed to protect the base material.

Technically yes however hot dipped galvanized steel resists corrosion in numerous environments for much longer than uncoated steel. Well first lets address a common misconception. Paint adheres better to galvanized steel than to galvalume so it requires repainting less often. With corrugated metal roofing it starts in the 4 00 to 5 00 per sq.

The standard is a 55 a z coating underneath the painted metal is a 50 a z coating. That coating isn t as dense. With that being said the painted metal roof has a 40 year warranty on the paint and 30. Final thoughts on galvalume vs.

The rust on galvanized will just continue to spread and get worse because it doesn t have that self healing property. Expands with heating and cooling. 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 coating corrodes instead of the core material.

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. 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. Why choose a painted metal roof.

Because of the coating this material is resistant to atmospheric corrosion and can last from 50 to 75 years outlasting comparable galvanized roofing material. It can also be painted and comes in many different looks. In short this is what is meant by the term galvanized it takes its name from the italian scientist luigi galvani.