Keep a porch maintained and clean with soap and water when applying a coat of acrylic latex to the porch ceiling. Acrylic latex is versatile, available in different finishes, and has a low-VOC and odor. Expect this type of paint to have plenty of give as the porch contracts and expands depending on the season, and it is less likely to chip or peel away after a short span.
Check out this durable paint with a matte finish on Amazon. If you have a porch with many details that you want to show off, dare to use a paint with a semi-gloss or high-gloss finish. There is a risk that any flaws will be easy to spot.
But, if you can keep up with maintenance, you get an aesthetically pleasing, smooth, reflective surface to admire. Check out this paint with a flat semi-gloss finish on Amazon. Paint with a satin finish is attractive on a porch ceiling because it easy to clean up, and it hides flaws better than a flat or matte finish. To the touch, a coat of paint with a satin finish has a slightly waxy feel, but it covers up bumps and has low reflective properties.
Aside from porch ceilings, paint with a satin finish is good for areas with trim, window sills, and overhangs. Check out this hybrid paint with a satin finish on Amazon. There are hybrid paints available that can be used indoors or outdoors, but exterior paint is best for a porch ceiling.
Many interior paints will degrade over time if used for an outdoor project, despite the finish. Additionally, most exterior paints have an oil base compared to water-based interior paint. Related Pages. View More Pages. Popular Products. Berger Everlast Range Advice and Products. Subtotal inc GST. Total inc GST.
Including GST. Discounts inc GST. Giftcard Total. Net Owing. Exposure to the sun and other elements will still cause interior paints to fade and wear more quickly than exterior paints. Some people wonder about using interior paint as an exterior primer.
Whether to minimize cost or some other reason, you can use it as a primer. It will need to be lightly scuffed with sandpaper to improve adhesion and then covered with a quality exterior paint of the same base. Unfortunately, you may still have to repaint the surface in a year or two depending on adhesive qualities and your climate extremes. Modern interior grade paints are formulated for interior use, not outside.
Interior paints are formulated for the protected surfaces within a building, not to withstand the abuses nature can toss around. You can paint over it now with exterior paint, or wait and do it in a year or two. Some suggest painting over the interior paint with an expensive sealer and considering it a lesson learned. Alternatively, save money and buy a quality exterior paint in the same color and base instead of a more expensive sealer, and just apply another layer.
Interior paint and exterior paint are not the same. Modern technology and chemistry have improved the products for indoor or outdoor use. If you wish to apply an interior paint over an exterior paint, the quick answer is yes; the long answer is…why? Using interior paint over exterior paint may save some money initially. It also increases the labor factor. If a renovation or addition has changed an exterior wall to an interior wall, you can confidently paint over exterior paint with interior paint.
However, interior paint is not recommended for exterior use and commonly voids any warranty. Interior paint is formulated for use inside and is best suited for that use. I hope you have a better understanding of interior paint, why it is called interior, and what happens if it is used outdoors.
Water-based paints are also preferred for indoor painting, and not just because of the fumes associated with oil-based paints. Additives are only one of four basic components of paint, though, and interior and exterior paints differ when it comes to the other three: pigment, binders and liquids. The lack of certain environment-specific additives gives interior paints a disadvantage when used on external surfaces, and the difference between interior and exterior-formulated paints doesn't end there.
Differences begin to emerge when you look at paint's other three basic components, too: pigment, binders and liquids. Let's start with pigment, which is what provides a can of paint with its color.
Interior paints may contain organic pigments for color, and certain types of organic pigments are known to significantly fade if used on an exterior surface; exterior paint formulas avoid these pigments, increasing the time needed between outdoor paint projects. Similarly, paints are formulated with additives known as binders, which are used to bind the pigment together as well as provide adhesion to the painted surface.
Because exterior paints need more help combatting the adverse effects of the environment, binders used in outdoor-friendly formulations give the paint resistance to integrity problems such as cracking and chalking, as well as increased moisture control. Interior paint binders may offer better resistance from abrasion, instead, which isn't necessarily a much-needed quality in exterior paint.
Interior and exterior paints also differ when it comes to the types of liquids used. According to federal guidelines, interior paints -- specifically indoor water-based paints including latex -- are designed to contain the lowest levels of VOCs volatile organic compounds.
VOCs are used as solvents in the liquid component of paint and they vaporize at room temperature. VOCs are linked to both short-term and long-term health problems, from headaches and dizziness short-term to respiratory disease and liver damage long-term. They may also be associated with certain cancers. The EPA reports levels of VOCs may average as much as two to five times higher inside your home compared to outside, and the levels can increase significantly post-painting.
Look for interior paints with low-to-no VOC levels.
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