Planex before fresh coat of paint?

[fp1337]

I have to repaint all inside walls of a 4,500 sq ft house. The existing paint is very orange-peely, so I was thinking of sanding it flat to give me a good base. Will the Planex be up to the task, or is it only good for drywall sanding? And is the Granat the best sandpaper for this task or is there something better out there for paint? I don't know the type of paint but I assume it's latex. I was thinking of hitting it with 220 grit.

 

[wow]

I haven't done exactly what you are proposing, but I'm pretty sure 220 grit is WAY too fine. I'd start with 120 and see how it goes. Try it in an inconspicuous place if you can. You can always go down or up in grit depending on your results.

 

[vteknical]

The Planex is perfect for sanding down the paint texture.  I would start with 150G Granat(499639), speed set to 3 and go up or down grits or speed as needed.

 

[Saskataper]

Sorry the planex won't do bugger all to painted orange peel walls. To large a surface area. Trust me I've tried.

 

[fp1337]

Sorry the planex won't do bugger all to painted orange peel walls. To large a surface area. Trust me I've tried.

Why not? Was it not moving fast enough? What sandpaper did you use?

 

[Saskataper]

I've used it all pretty much right from 24-320 , I do a lot of texture repairs and the pad on the planex has such a large surface area it can't cut into the paint it'll just knock down the high spots.
I guess I shouldn't say it won't do anything, I will start cutting with a course enough grit but that will leave you with more work than when you started with large scratches.
Are the walls actually textured? Or is it the texture from rolling the paint on that you are talking about?

 

[tjbnwi]

I've had no problem sanding paint to a smooth surface with the Planex. Recommended it to someone just for this type of situation, he loves the way it works and saves him a lot of hours per job.

Use Granat paper.

Tom

 

[AlexThePalex]

Granat 80 with the Planex should work.

 

[John H]

...The existing paint is very orange-peely, so I was thinking of sanding it flat to give me a good base...

A good base for what????

Orange peel, knockdown, whatever - just wash the walls down, use a good primer and then paint.  What am I missing here that you would want to actually sand the orange peel off?

 

[Brent Taylor]

When you say orange  peel, do you mean the drywall texture or are you talking about alligatoring(Crazing ) of the painted finish. As in painting an oil paint over a latex paint where the surface looks crazed? If it's  orange peel the plane should work.  If it's crazed then your going to neeto look at a different solution,  like sealing and maybe a top coat before painting.

 

[tjbnwi]

I think he means roller stipple.

Tom

 

[fp1337]

I've used it all pretty much right from 24-320 , I do a lot of texture repairs and the pad on the planex has such a large surface area it can't cut into the paint it'll just knock down the high spots.
I guess I shouldn't say it won't do anything, I will start cutting with a course enough grit but that will leave you with more work than when you started with large scratches.
Are the walls actually textured? Or is it the texture from rolling the paint on that you are talking about?

Yes I'm talking about roller texture.

 

[fp1337]

...The existing paint is very orange-peely, so I was thinking of sanding it flat to give me a good base...

A good base for what????

Orange peel, knockdown, whatever - just wash the walls down, use a good primer and then paint.  What am I missing here that you would want to actually sand the orange peel off?

I would prefer to start a good quality paint job by sanding down the roller texture from the previous job that was poorly done.

 

[AlexThePalex]

Generally roller texture is very fine. If you paint over it, wouldn't the new paint just even it out? 

How are you going to paint it, with a roller, a brush or a sprayer? And what kind of paint?

Before sanding all walls I would try out a small patch with the new paint and see what effect it has.

 

[tjbnwi]

Generally roller texture is very fine. If you paint over it, wouldn't the new paint just even it out? 

How are you going to paint it, with a roller, a brush or a sprayer? And what kind of paint?

Before sanding all walls I would try out a small patch with the new paint and see what effect it has.

Depends on what roller nap was used with what paint on how fine the stipple will be. I've seen some very heavy stipple from to much roller nap.

Tom

 

[fp1337]

Generally roller texture is very fine. If you paint over it, wouldn't the new paint just even it out? 

How are you going to paint it, with a roller, a brush or a sprayer? And what kind of paint?

Before sanding all walls I would try out a small patch with the new paint and see what effect it has.

Well, I'm more versed in fine finishing and not painting walls, but the slightest dimple is always going to show up. Even thick Latex dries to 1-2 microns, anything shows up once dry. Adding more paint on top is going to compound the orange peel further. Again this is going to depend on tolerance that people have to these things. But I figured, with the Planex, I might be able to do things I would not attempt with a manual pole-sander.