DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Painting (http://www.diychatroom.com/f4/)
-   -   Painting Cedar Siding - Sanding the paint and wood (http://www.diychatroom.com/f4/painting-cedar-siding-sanding-paint-wood-186406/)

rose ellen 09-03-2013 07:05 AM

Painting Cedar Siding - Sanding the paint and wood
 
2 Attachment(s)
My husband and I are repainting our rough cedar siding. We have only been in the house a little over a year and are not sure the last time it was painted. We have scraped off all of the peeling paint. We have also hand sanded the edges between the scraped wood and paint. However, I am concerned that it will still be very noticeable once we paint over it. I do not want to waste all this time prepping and have a terrible looking paint job.

Does anyone have any advice on how to get rid of the raised edges of the paint? Do we just need to sand more? Do we need to remove all the paint from the boards?

I have attached two pictures to show our scraping. (We are painting the house in a medium gray, Sherwin Williams Duration, flat)

Thanks for your help!

ToolSeeker 09-03-2013 07:18 AM

As long as all the loose is off you should be OK to paint. Since you are going grey I would suggest a stain blocking primer tinted as grey as they will let you. Glidden makes a gray primer but it is not a stain blocker and cedar has tannins which will bleed thru regular primer.

Gymschu 09-03-2013 07:19 AM

Looks like you've done some fine prep work so far. About all I can add is to do more sanding to FEATHER those rough edges out. If you feel confident enough, you can use a power sander such as an orbital to remove more paint and feather those edges. I will warn you, though, it can be tricky to use. You don't want to end up with swirl marks, gouges, etc. Definitely practice on an inconspicuous area.

If it's cedar, you definitely want to use an oil-based primer. Most water-based primers act like a wick on cedar and all the tannins from the cedar come out through the primer leaving ugly yellow/orange/brown stains on your siding which then are difficult, if not impossible, to cover with your finish coats.

You may also consider a solid color stain such as Sherwin-Williams Woodscapes which would eliminate the need for primer.

Jmayspaint 09-03-2013 07:45 AM

Power sanding on rough cedar can be tricky because unless you do the whole thing, you can end up with 'smooth' spots that will show through worse than the peeling paint.

That said, I think sanding is very good prep to do and will improve the life of your coating.
Like Gym said try a test spot. Maybe with rough paper (40?) you don't want it too smooth.

rose ellen 09-03-2013 12:54 PM

Thanks for the responses. We painted a small section with tinted oil based primer yesterday and could still see the area where the paint was stripped. Can we sand it enough to not notice or is this just an issue with scraping the paint (the paint that peeled was pretty thick probably several paintjobs)? Any advice on how to best feather it when sanding? Maybe just more elbow grease!

ToolSeeker 09-03-2013 01:06 PM

Primer will not cover like paint it is normal to see thru primer. It's job is to seal and give the paint something to stick to basically. Paints job is to cover and add the color.

Gymschu 09-03-2013 01:58 PM

Really, it's just more elbow grease. "Feathering" takes some practice and some finesse. You have to sand the high spots rather aggressively and then gently "feather" into the areas that are solidly holding paint. You don't want to be as aggressive or remove as much material the further you get away from the scraped areas. This is how you blend the scraped area into areas where very little scraping was needed. It's much easier to show someone rather than try to explain it. Just gonna take some practice.

upcyclehouse 03-21-2016 02:07 PM

Re: Painting Cedar Siding - Sanding the paint and wood
 
I'm wondering how your refinishing for your siding turned out? We have a 1959 house with siding similar to yours and are trying to figure out how to make our house less ugly... do we paint, or.... would love to see the results of your house.

Thanks!

afrig 03-22-2016 11:19 AM

Re: Painting Cedar Siding - Sanding the paint and wood
 
Quote:

Originally Posted by Jmayspaint (Post 1237509)
Power sanding on rough cedar can be tricky because unless you do the whole thing, you can end up with 'smooth' spots that will show through worse than the peeling paint.

That said, I think sanding is very good prep to do and will improve the life of your coating.
Like Gym said try a test spot. Maybe with rough paper (40?) you don't want it too smooth.

This right here is good advice. If you're going to sound down more I suggest just feathering it in. If it's a large area I don't like to bother. I'll scrape and sand to prepare the surface. If it's a small enough area i just feather it in by hand. You may be able to use an orbital. Just don't over do it.

I forget who suggested it, but use a grey primer like suggested above.

wptski 03-22-2016 01:02 PM

Re: Painting Cedar Siding - Sanding the paint and wood
 
Last summer I had some badly neglected cedar in the gable above my garage door. I first used a stiff brush which removed some the dirt and old stain. I then Defy stain stripper after one has to use its wood brightener to neutralize the stripper. I used Oxy Clean powder product after that.

You have the same problem with your siding as you can get into the corner where the roof overhangs and at the bottom because of the stone.

I can't remember what brand of stain I used but I sprayed it using a HVLP system and back brushed it as I went along. It isn't perfect but I didn't expect it to be because of its age(1966/1967). At the bottom of the boards where it met the header of the door where I couldn't get with the scrubbing. A bit of old stain has a bit of sheen do it but not all that bad.

I used a garden hose for rinsing, no power washer use on that old cedar, I got plenty of wood fibers by brushing as it was!

AlphaWolf 03-24-2016 12:37 AM

Re: Painting Cedar Siding - Sanding the paint and wood
 
2 Attachment(s)
Sand as much as you can like every one said. Try using peel bond primer instead of oil primer. Peel bond is much thicker and it helps transition the previous paint edges. Here are some before and after for you to see. All i did was sand like you did than peel bond and top coat in finish.


All times are GMT -5. The time now is 11:12 AM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.


Search Engine Friendly URLs by vBSEO 3.6.1