View More Products. 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. Sign In. The primer is commonly considered as the most important coat applied to a substrate, as the final finish depends on the priming process.
Often, primers are used as a method of adhering subsequent coats of paint to the surface. In addition to adding some pigment to the surface, some primers can act as corrosion inhibitors, prevent discolouration of the topcoat or make it more uniform.
Both primers and sealers are also used to keep any surface stains from bleeding through the paint. This quality is particularly useful when painting wooden surfaces such as mahogany, redwood or cedar.
While sealants share many properties with primers, they are more commonly used on porous surfaces like masonry or new wood which are more likely to absorb coats of paint unevenly. Many brands now offer products that can be used as both a sealer and a , so you can benefit from all the advantages of adhesion and sealing in a single package.
Surface preparation is one of the most overlooked steps in an installation process because of the extra time it involves. As well as improving the adhesion of non-porous materials, primers are used as a preparatory coating which regulates the absorption rate of porous substrates. Overlooking the application of an appropriate primer might lead to poor bonding of substrates and, ultimately, to the de-bonding of coverings. Skipping the primer and moving directly to the colour coats can often backfire, as the surface will likely require at least one extra coat of paint, which is a waste of both time and money, since paint is more expensive than primer.
By sealing porous surfaces such as drywall and raw wood, primers keep the surfaces from soaking up too much paint too quickly, making sure you get the most from your paint. In addition to saving on paint, you will also be saving time and effort if you opt for a primer, as it dries quickly and allows you to apply the topcoat sooner. Make sure to thoroughly clean and sand the surface before applying the primer and repainting.
Ensure that the surfaces you are painting have been meticulously cleaned from any contaminants and remove any sharp edges if you are working with materials such as timber or steel. To create a uniform surface for the finish coat, primers adhere to the substrate, smoothing out the porosity of unpainted surfaces.
Primers and sealers provide an extra measure of assurance that the paint you use will adhere to its surface. In effect, primers and sealers are preparatory products that give the surface tooth that the paint can grip. There are entire aisles dedicated to primer paints and sealers at home-improvement stores, which can make selecting the right product for your project tricky.
To figure out what you're looking for, check out our guide to paint primers and sealers that will help you get the job done right the first time. Primers are formulated to adhere to the substrate and create a uniform surface for the finish coat.
Primers stick to the surface; finish coats stick to the primer. This type of product penetrates unpainted surfaces, smoothing out any porosity. Primers for wood, whether they are latex or oil-base, contain specialized ingredients that topcoats don't always have or have in lesser amounts.
Stain-inhibiting tannin blockers or preservatives that are found in primers, for instance, are designed to soak into raw wood and seal it so the tannins don't bleed through and stain the finish paint. Primers for other surfaces have similarly specialized ingredients.
There are a number of different kinds of primers, including oil-base, shellac-base, and water-base, and each has its own specialty. Ask your paint retailer for a recommendation on which product to use on the surface you're painting.
Many homeowners, in a rush to complete a project, skip the primer and go right to the color coats. This shortcut often backfires because it might take an extra coat of color to get complete coverage. Because primer is typically cheaper than paint, that represents both wasted time and money.
Primer is specially formulated to bond to raw wood and to seal porous surfaces such as drywall. Drywall and drywall joint compound soak up paint fast, and if you've invested in high-quality paint, you want your investment on the wall, not in it. For best results, prime all drywall joint compound and let the primer dry. Then prime the entire surface of the wall. Primer typically dries rapidly so you can apply the finish coat sooner.
A good primer saves time, effort, and money. Consider having your primer tinted to the color of your paint so the paint covers better. Your paint retailer can typically do this for you. Closely related to primers, sealers are formulated to make a porous surface non-porous. They are also used to cover knots and mildew to keep them from showing through the finish coats. You'll find oil-base sealers, as well as products with reactive resins and epoxies.
Most of these products clean up with strong petroleum solvents.
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