Galvanized Vs Painted Roofing

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.

Galvanized vs painted roofing.

That s the normal length of warranty on kynar 500 paint finish. Galvalume metal roofing system properties. Details about galvanized metal roofing are at galvanized steel roofs. It can also be painted and comes in many different looks.

Also see complete list of types properties of metals used in roof systemsfor more about galvanized steel roofing. The standard is a 55 a z coating underneath the painted metal is a 50 a z coating. 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. Underneath a painted metal roof there is a galvalume coating.

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 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. The g 60 refers to amount of metallic finish per sq ft. In short this is what is meant by the term galvanized it takes its name from the italian scientist luigi galvani.

Whether it is paint or galvanised steel any coating is designed to protect the base material. With that being said the painted metal roof has a 40 year warranty on the paint and 30. The coating corrodes instead of the core material. Galvanized steel is more durable than most other material utilized for building.

Well first lets address a common misconception. 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. There are slight differences between stainless steel and galvanized steel.

Why choose a painted metal roof. Final thoughts on galvalume vs. The problem with galvanized metal painted or not is that once it starts to red rust it doesn t eventually stop as galvalume does. Technically yes however hot dipped galvanized steel resists corrosion in numerous environments for much longer than uncoated steel.

Paint adheres better to galvanized steel than to galvalume so it requires repainting less often. That coating isn t as dense. Both types of steel can be painted to improve durability.