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Herb C

07:50AM | 07/07/04
Member Since: 10/25/03
26 lifetime posts
Bvbrush
My house is of wood siding and before I bought it, it was painted but obviously the previous person did not do a good job of preparation and cleaning so over the last 2 years the paint has peeled rapidly down to the wood. I've been doing alot of sanding and

wanted to know that when I get done sanding is it wise to wash it down with a hose before priming. I was thinking that this might not be a good idea of spraying water onto wood that had already been peeled badly. Need some advice please

tomh

08:07AM | 07/07/04
Member Since: 07/01/03
549 lifetime posts
The scraping and sanding you have been doing is excellent surface preparation. All delaminating paint must be removed to allow future paint to properly adhere. Water cleaning with a hose or pressure washer done properly should not damage the siding, and can help remove dust residues, but I'm not sure it is a great benefit either when good surface preparation (like yours) has been done.

A high quality primer and finish paint should be able to be applied to dust-free surfaces without any problem. The source of delamination needs to be considered. Are there oil residues? A good water cleaning with TSP could help remove this issue if present. Once you are ready to paint, I recommend you paint a small section with the primer and allow it to dry, then test for adhesion by trying to scrape the primer with a scraper blade or fingernail. This can quickly determine if you need different preparation or paint types, and avoid problems on a larger scale. If the primer sticks, you are good to go.
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