Choosing The Right Paint For Your Metal Roof

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The repainting of a metal roof may be costly and frustrating if the right paint is not used. This is compounded by the truth that quality metal roof paints aren't typically readily available at local building materials suppliers.

The following four tips are crucial when choosing paint for the repainting of a metal roof:

Tip # 1: Know What You Are Painting: Most building materials experience varying levels of thermal expansion and contraction. This means that changes in air or surface temperature may result in changes to the physical dimensions of building material. The metal panel is particularly vulnerable to this phenomenon. Like, if you stand near a home with a metal roof on a cool winter day, you can hear the panel pinging as it expands with exposure to the sun. This pinging noise is due to the panel stretching along its width and length as the top temperature rises (with exposure to the sun). When the sun goes behind a cloud, you'll hear the same pinging noise that is now caused by the panel shrinking as its surface temperature decreases. In conclusion, metal roof panels increase and reduction in length/width numerous times throughout the day/evening.

Tip #2: Paint Properties: Knowing that the metal roof expands and contracts, it is essential to select a paint by having an appropriate degree of elasticity. Why do traditional household paints crack & peel so quickly after being placed on a metal roof? Answer: While the panel stretches, these paints aren't elastic enough, become brittle and crack. Once they have formed cracks inside their surface the peeling process is close behind. Unless the paint is specifically made for use on a metal roof and is indicated as a result on the label, don't have a chance. This pertains to both primer and top-coats. Selecting the right paint while having an ill-suited primer will result in a peeling roof.

Tip #3: Choosing The Right Product: Select a water-based acrylic, elastomeric metal roof painting Sydney. This can give you a product that's A) designed specifically for use on metal panels, and B) is easy to clean-up in the event of a mishap. Important Note: I often hear/read concerns to the consequence that water-based paint is not as long-lasting as solvent-based. In my own experience and the knowledge of other industry veterans, that is simply incorrect anymore. Water-based acrylics are less brittle than solvent-based paints, more eco-friendly and simpler to clean-up.

Tip #4: Paint Longevity: When applied relating to the manufacturer's application instructions, quality metal roof paint should last 8 - 12 years. No manufacturer will give you a guarantee as to lifespan whilst the performance of the item is based mostly on the applying process, however following basic industry guidelines before, during and after the painting process will typically ensure lasting results.

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