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Re: latex over oil paint

From: info@builderswebsource.com
Category: Painting and Wallcoverings
Remote Name: 63.198.181.43
Date: 17 Nov 2002
Time: 01:57 PM

Comments

You can cover oil-based paint with latex so long as you follow these important instructions. First, the key to any paint job is proper surface preparation. According to Zinsser, the best way to remove grease and dirt is to "wipe down with mineral spirits (paint thinner) followed by rinsing with a half-and-half mixture of water and ammonia. Let the surface dry thoroughly if non-water based products are to be applied. Where surfaces have been sanded, be sure to use a tack cloth to remove all dust." If the old oil-based paint is glossy, it's a good idea to sand first to roughen up the surface slightly. However, if you believe the old paint contains lead (common in structures painted before 1978), you should NOT disturb the surface by sanding or scraping. In this case, removal or preparation by a professional lead abatement company may be required if the surface is in poor condition (such as signs of chipping, peeling, chalking, etc). Furthermore, some painters do not recommend applying latex or more than 3-4 older coats of oil-based paint, as lifting could occur in some situations. Once the surface is thoroughly sanded and cleaned, apply a coat of Zinsser Bulls-Eye 1-2-3 primer and let dry. Then you're ready to paint with your choice of latex topcoat. For additional information on lead abatement, contact the National Lead Information Center at 1-800-424-LEAD. Additoinal information is available from the EPA website at: http://www.epa.gov/opptintr/lead/ Builders Websource.

 

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