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AR15.COM
8/31/2026 10:47:55 AM EDT
House built in 1974, solid knot-free cedar lap siding. I paint one side a year and have for 27 years.

I have this spot above the garage that has blistered, bubbling, etc. Looking for input on how to attack this prior to painting. I can scrap away the stuff that's not adhering but don't want a big "lake" left after I remove the loose stuff.

Appreciate input on the best method to fix prior to prime and paint. Thanks,

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8/31/2026 11:37:04 AM EDT
[#1]
With house paint distance is typically the answer to the crater left over from having fewer coats of paint. You can sand the edges and feather it out so the edges of the crater aren't noticeable from the ground.
9/1/2026 1:11:17 PM EDT
[#2]
Use a DA type sander and feather it out.  Just make sure that paint didn’t bubble from the inside out, as in wood rot holding moisture.  Every time I’ve seen that it’s due to wood rot, but mostly on PT lumber when people get in a hurry and paint wet wood.
9/1/2026 3:59:43 PM EDT
[#3]
It's the next side to prepare. I'll start chipping away and post some pre-fill or pre-prime pics.
I have good tools to sand with.

I did check the caulk from siding to garage door 2x8 trim. Looks in place and not compromised.
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9/1/2026 9:59:13 PM EDT
[Last Edit: 545days][Edited] [#4]
Sadly my prediction is water under the paint caused rot and the peeling paint.  If correct it was likely capillary action pulling water up from the flashing below that board.
9/2/2026 2:18:25 PM EDT
[#5]
Quote History
Originally Posted By 545days:
Sadly my prediction is water under the paint caused rot and the peeling paint.  If correct it was likely capillary action pulling water up from the flashing below that board.
View Quote


Very well could be. I did re-caulk that several years back. May have been too late. I started prepping another side this week. Probably into Oct. before I hit this wall.
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