Oil-based Paint Vs. Water-based Paint: Which is best for the Roof?

Oil-based Paint Vs. Water-based Paint: Which is best for the Roof?

Painting your roof is more than just a decorative home project. It’s also protective, as it shields your roof from a number of elements that can inevitably cause damage. Roof paints help lengthen a roof’s “life span”.  It also prevents minor problems from becoming major ones, like leaks and rust. Hence, experts agree that roof re-painting must be done every after 5 years. More importantly, the right kind of roof paint must be used for the roof’s surface, whether it be cement, concrete tiles or IBR (inverted box rib) roofing.

But how do you know what type of paint to use?  Choosing the right paint color is one thing, but opting for the right type of paint is another. Here, we give you the differences between a water-based paint and an oil-based paint — things you need to know to be able to pick which one works best for your roof. 

 

Water-Based Paint

This type of paint, also known as acrylic paint, is more environment friendly.  It emits less odors because it has less VOCs (volatile organic compounds) which make it safer for homes, hospitals and schools. It’s also easier to dry (usually about one hour) which makes it ideal for painting projects that demand quick completion. Since it’s water-based, it does not require extra purchase of solvents like thinners which you might be needing to clean your paint rollers and brushes. Water-based paints also cost less compared to oil-based paints. This means lesser money to shell out, and therefore bigger savings for the practical painter. It’s also non-flammable and easier to apply, although others claim that water-based paints have more shrinkage than solvent-borne paints. They provide great color retention and they likewise work well when it comes to fade resistance. Mould and mildew resistance formulations for acrylic / water-based paints are also available, making it a great option for home painting projects such as roof repaints. They can also be used over existing oil-based paints. 

 

Oil-Based Paint

This type of paint has a harder finish but is also prone to brittleness, cracking, and peeling over a period of time. For very obvious imperfections and stains, oil-based paints provide thicker and better coverage in a single coat compared to acrylic paints. This makes it a more practical option if the goal is to hide major surface imperfections. Oil-based paints also have better chemical resistance, but they also give off strong odors which may not be very friendly for the home dwellers. Compared to water-based paints, oil-based paints take a longer time to dry and are harder to clean too. However, because the resin of an oil-based paint forms a hard coating, this paint also resists stains and rusts for a longer period of time.  

Water-based paints are generally the more popular option for home repainting as they’re the more affordable, more environmentally responsible paint options. This type of paint is also recommended for exterior painting like exterior walls and roofs, as it can hold its color longer. But for painters who are not too sensitive about odors and drying time and who opt for more hardworking paints on surfaces that need heavy duty coverage, oil-based paint is the way to go. At the end of the day, choosing the “right” paint for your painting project relies heavily on one’s priorities. 

 

Want to know more about what paint to use for your roof?  Check out RoofKote. Visit www.islandpaints.com

 

Sources:

https://www.maintainingmyhome.org.nz/maintenance-guides/painting-guide/what-paint-to-use/

https://www.housebeautiful.com/design-inspiration/a27729301/water-based-paint-vs-oil-based-paint/

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