To cover water stains, use an anti-stain primer on affected areas. Both Kilz and Zinsser offer ceiling paints for this purpose. Kilz has a product called Upshot, which is a spray ceiling paint designed to match an aged white ceiling. If water damage is extensive and requires heavy lifting, you can use the KILZ Restoration primer.
It is oil-based and can remove the toughest stains. You'll need a stain blocking primer, such as a simple spray stain primer, or you can paint it with a brush and roller. Our favorite stain blocking product is the Sherwin Williams Pro Block oil-based primer. Another good product to use is Zinsser's B-I-N stain blocker.
You will also need flat white paint for ceilings, a ladder, cloths, an extension cord, safety glasses, a roller and a cover for painting, a brush, a tray and a liner for painting, painter's tape (unless you have a very firm hand) and good music to keep you motivated. This is perhaps one of the most important steps in repairing a stain. Not all paint products are manufactured the same way, and using the wrong products can offer disappointing results. Treating the water stain with an oil-based primer is the sure way to keep stains trapped behind a new coat of paint forever.
A number of well-known brands offer an oil-based base, including the popular and highly effective Kilz Original. Kilz is available cheaply at most major stores. PPG Paints manufactures another popular and effective oil-based product called Seal Grip (17-941NF), which, in addition to blocking stains, is also an excellent adhesive primer on most surfaces. Aptly named Zinsser Cover Stain, it's also a readily available stain blocker that professionals have trusted for decades.
If you have a local Sherwin-Williams store, the new Extreme Block from SW is a highly effective water stain blocking primer. All of these primers (and many more) listed above share the characteristic of being alkyd (oil-based) primers and all do their job well when it comes to blocking water stains. Unfortunately, they also share the undesirable trait of exuding an unpleasant (sometimes intolerable) smell. If you're painting in a busy space and the smell is an issue, the Zinsser odourless oil primer (sold at PPG stores and other specialty paint stores) works great and really lives up to its name.
For most homeowners, Zinsser Odorless is a great choice. At this stage, it can be tempting to apply a coat of paint directly to the water stain and end the day. It goes without saying that if the ugly stain was caused by a water leak, you should make sure that the leak is fixed before repairing and repainting the wall. We remind you once again that before handling the water stain on your ceiling damaged by paint, you must first repair the leak that caused it.
It's essential to use the right primer, specifically formulated to block the specific type of hard stain you're covering. If you have a smooth ceiling, spread the primer over the water stains with a paint roller with an extension and a 1/2-inch roll-up cover, then let the primer dry for two hours or as indicated on the primer packaging. Painting over the primed area will help the color match the rest of the ceiling to cover the surface with professional quality. In any of these cases, after stopping the water source, it's a good idea to contact a water damage specialist and request the necessary cleaning services to prevent further damage.
In addition, if you want to save on the costs of repairing and repainting your roof, try to check if water damage in your home is included in your insurance coverage. It has to be oil-based so that water cannot seep through the ceiling because oil is insoluble in water. Make the necessary repairs or enlist the help of a professional roofer, an HVAC professional, or a plumber as needed, and you can prevent future leaks and water stains on the roof. Knowing what is the best product to dye a damaged roof can be useful when you have another mishap.
Choose a paint that matches the color of the ceiling for a consistent look, and then apply it to the primed area with a roller (choose an 8-inch nap cover for a smooth ceiling or a ¾ to 1 ¼ inch layer for a textured ceiling). .
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