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-   -   Repainting glossy exterior (http://www.diychatroom.com/f4/repainting-glossy-exterior-21719/)

crescentpr 06-01-2008 08:30 PM

Repainting glossy exterior
 
Hi, I am new here. Lots of great information.

I plan on repainting the exterior of a home with existing glossy paint. From what I have read it seems the standard protocol is to sand prior to applying new paint.

Is it necessary to sand the entire surface of the house exterior that is glossy, including all the trim, eaves, etc.? That would seem like a gigantic and laborious undertaking.

Is this the only solution to repainting a glossy surface? Thanks.

chrisn 06-02-2008 05:17 AM

Sanding AND cleaning is the proper way, that's what you pay painters for.:laughing:

crescentpr 06-02-2008 02:42 PM

Thanks chrisn. I have heard other solutions to this dilemma. I was told that perhaps a coat of good oil primer or Zinsser 123 would adhere to the glossy paint (once it had been cleaned and scraped) then it could be top coated with premium 100% acrylic latex. Any opinion on this technique?

mark942 06-02-2008 07:28 PM

Lets see.Sand entire house.My labor free.Well free to me.One coat of primer entire house =$$$ out of pocket, plus my labor. Seems a easy choice to me.I will pick sanding the entire house................................. :thumbsup:

As to the primer then top coat.Primer will be going over oil? or latex?

chrisn 06-03-2008 06:04 AM

Also depends on how much bare wood there is going to be. I use slow dry oil for bare wood priming,followed by 2 coats of 100% acrylic latex.

crescentpr 06-03-2008 01:13 PM

Yes, the cost of priming an entire house is not cheap but will it adhere well and allow me to skip the sanding? How much sanding is necessary? Do you have to completely remove all the gloss or just scuff the surface? I will be applying satin latex over satin latex on most of the house. The only exception is the porch floors. They are painted with alkyd floor paint. Thanks.

slickshift 06-03-2008 08:42 PM

Quote:

Originally Posted by crescentpr (Post 127594)
...but will it adhere well and allow me to skip the sanding?

Nope
You'd have to sand before priming anyway

Quote:

Originally Posted by crescentpr (Post 127594)
How much sanding is necessary? Do you have to completely remove all the gloss or just scuff the surface?

Just a light "scuff" sanding of firmly adhering paint is fine

crescentpr 06-04-2008 12:44 PM

Thanks; I appreciate your help. I know I'll need sanding sponges for some areas; what would suggest for the larger areas?

slickshift 06-04-2008 06:54 PM

A random orbital sander
Palm sized is fine


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