Saturday, February 27, 2010

When I'm decorating my window Sill, why is it the paint starts peeling off .?

it only lasts about a week after i have finishedWhen I'm decorating my window Sill, why is it the paint starts peeling off .?
Take a damp cloth..dampen the paint you have painted on your sill and gently scrub off with a fine steel wool which will remove all the new paint. Use a good bonder once dry...something made to adhere to oil based paint (doesn't matter on name brand). I like the ones made with a shellac base. Allow to dry (will dry in a couple of hours). Then you can paint two coats of whatever paint you want. It will adhere and stay.When I'm decorating my window Sill, why is it the paint starts peeling off .?
Sounds as if you haven't prepared the sill properly.





You need to sandpaper it down almost down to the bare wood - assuming it is wood of course- wash it down with a little bit of distilled or boiled water on a cloth and let it dry for about an hour.





Then apply 1 coat of your paint and let it dry. Then apply another 2 or 3 coats letting them dry in between. - Done!





If your sill is made of stone, you can follow the same steps as above, but go to you hardware store for advice first.





If your sill is plastic, again I suggest you go to your local hardware store and ask them for advice. However, I think that if your sill is plastic, the paint you've been using is the wrong one as it's not compatable with the plastic your sill is made from.
I expect there was waxy polish on the sill which will prevent paint adhering properly. You will have to start again. Ignore advice to sand down to the wood. It is not necessary. You will have to remove the peeling paint and the wax. Use a nylon scouring pad (from a DIY store) and sugar soap in hot water.


The sugar soap is alkaline and will remove grease and wax. As a final clean, when the sill is dry, use white spirit and a cloth to remove any last traces of grease or wax. Use a good quality undercoat first followed by a gloss or satin finish. Dulux is about the best. With painting, preparation is everything. Applying the paint is the easy bit. If you proceed as I have said your sill will have a durable finish. Don't use any polish on it, just a damp cloth to clean and it will be ready for new paint in ten years time!
Before starting to paint you must sandpaper the surface with wet or dry paper. Wet it first then give it a good rub with medium wet or dry sandpaper. this gives a grip to the next coat which should be undercoat. When this is dry give a light rub with ordinary sandpaper {not too rough} then paint with gloss paint.Do not use one coat paint as this does not create a good background. Laurence.
Nothing can withstand u v over a period of time. I believe you did not remove the damaged paint film before repainting. Try removing them with the help of steel brush, scraper and sand paper. clean off the dust, apply a coat of wood primer, an under coat, follow up with 2 finishing coats, or as recommended by the paint manufacturer. do let the paint dry totally between application. to last longer but more costly use polyurethane paint.
The under coat must have been an oil based paint and you painted over it with an acrylic, water based paint. You'd need to sand off the old paint, apply a primer and then repaint it.
Sounds like bad preparation. It won't adhere to any underlying grease. Rub down with sand paper and use a sugar soap solution
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