chalky siding, use Zinzer 123 or oil primer?
#1
Even after power washing, one side of our house is extremely chalky. Someone told me Zinzer 123 is for conditions like this....or should I use an oil primer?...help! What would work better?
#2
You didn't say what kind of surface you had.I will assume wood and /or masonite.Did you just wash with no brushing? It is amazing how much of the chalk will remain even when blasted with 3500psi.If you didn't brush when washing, try it and rinse with a garden hose.Further pressure washing will not help.Lock the surface down with an exterior oil primer.
#4
Zinsser 123,in my opinion,is not a replacement for an exterior oil primer.It may bond and provide a bonding surface but has no stainkilling properties.I would use it outside over an oil primer as a second or even third coat before the final finish.Buy the best primer and paint and you will have done all you can do.
#5
Kilz is an oil based, stain killing primer. I use it all the time.
More than a Carpenter
http://www.carpenter.cjb.net
More than a Carpenter
http://www.carpenter.cjb.net
#6
Mike, another question...what do you think of these interior/exterior primers? Someone once told me Zinzer 1 2 3 gets brittle when used outside. Ever heard of that? Thanks for the advice on the oil primer. I'm using Benjamin Moore alkyd oil primer and MoorGlo top coat.
#7
I'm not a daily user of Zinsser 123 but I have never seen any kind of failure from what I have used.I think the latex primers are an attempt on the part of paint companies to come up with an alternative to oil based materials before they are forced to by the DEQ and other government tribes.I avoid using them on raw wood due to the fact the wood can turn colors from knots and sap.They have a use inside in that they will bond to just about anything oil or otherwise,high gloss,sanded or not.They are great for priming wallpaper that will not give up and is hung well.I don't know if I said before latex primers do not hold back water,rust,tannin,ink,felt markers,smoke stains or odors.The info on the side of the can will tell you otherwise but don't believe it.