Author Topic: What is the best way to fill screw holes in PVC trim?  (Read 42515 times)

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Offline RonMiller

  • Posts: 318
What is the best way to fill screw holes in PVC trim?
« on: August 16, 2014, 05:35 PM »
I replaced rotted exterior door trim with PVC. In a few days I need to go back and fill in the the finish screw holes. Of course I could white silicone them but can/should I use Bondo or something else instead? Can I sand the PVC planks if I use a high enough grit and am careful? Almost all my work is interior but this is outside, so checking the best way to finish this off before it's painted.

Hoping Brice Burrell and others will hop in here.
Ron

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Offline Brice Burrell

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #1 on: August 16, 2014, 07:38 PM »
Ron, I use Bondo.  If you're careful applying the Bondo you'll minimize the amount of sanding.  120 grit works for me, I don't think there is any need to sand beyond that.
Check out my new blog, The Green and Dark Blue Blog.

Offline Tim Raleigh

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    • Oakville Cabinetry
Re: What is the best way to fill screw holes in PVC trim?
« Reply #2 on: August 16, 2014, 11:44 PM »
I use white epoxy putty. It doesn't shrink and I don't usually have to sand it...I have used the Azek two part adhesive but they don't sell it anymore.
Tim

Offline roblg3

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #3 on: August 17, 2014, 01:20 AM »
a point of caution when sanding pvc.  if you sand agressively with something less than 80 the pvc can ball up leave alot of scrtch marks. being plastic it can melt so start slowly .
Rob Gardner
Operator
RL3 Enterprises

Offline VW MICK

  • Posts: 881
Re: What is the best way to fill screw holes in PVC trim?
« Reply #4 on: August 17, 2014, 02:53 AM »
I no it doesn't help you now .but when I did mine I got some .PVC coated nails/tacks

They sort of got a small disk of the same material on the head

Might be worth looking into .if you do it again

Online Peter Halle

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #5 on: August 17, 2014, 03:24 AM »
You mentioned using silicone.  If you use caulking of any kind, check the label to make sure it can be painted.

Peter

Offline Sparktrician

  • Posts: 3634
Re: What is the best way to fill screw holes in PVC trim?
« Reply #6 on: August 17, 2014, 07:22 AM »
I use PVC plugs that come with the screws

- Willy -

 "Remember, a chip on the shoulder is a sure sign of wood higher up." - Brigham Young

Offline Brice Burrell

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #7 on: August 17, 2014, 07:31 AM »
I use PVC plugs that come with the screws



I've used these screws, I liked the idea but not really the product.  My problems are the screws are way too long at 2 3/4" and they are a ceramic coated screw, not stainless.  I don't use them anymore.
Check out my new blog, The Green and Dark Blue Blog.

Offline Brice Burrell

  • Posts: 7351
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    • The Green and Dark Blue blog
Re: What is the best way to fill screw holes in PVC trim?
« Reply #8 on: August 17, 2014, 07:35 AM »
a point of caution when sanding pvc.  if you sand agressively with something less than 80 the pvc can ball up leave alot of scrtch marks. being plastic it can melt so start slowly .

I've sanded all the big name brands of pvc trim and sheets aggressively- sure you'll have to sand out the scratches but I've never had it melt.  What brand have you had melting with?   
Check out my new blog, The Green and Dark Blue Blog.

Offline Sparktrician

  • Posts: 3634
Re: What is the best way to fill screw holes in PVC trim?
« Reply #9 on: August 17, 2014, 07:38 AM »
I use PVC plugs that come with the screws



I've used these screws, I liked the idea but not really the product.  My problems are the screws are way too long at 2 3/4" and they are a ceramic coated screw, not stainless.  I don't use them anymore.

Starborn Industries offers both coated and stainless screws. 

- Willy -

 "Remember, a chip on the shoulder is a sure sign of wood higher up." - Brigham Young

Offline roblg3

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #10 on: August 17, 2014, 05:34 PM »
veranda and azek both.  when sanding the grits get smashed together and make little plastic balls that have melted together.  if i slow my sander, i don't have the issue all that often.
Rob Gardner
Operator
RL3 Enterprises

Offline RonMiller

  • Posts: 318
Re: What is the best way to fill screw holes in PVC trim?
« Reply #11 on: August 17, 2014, 09:32 PM »
Thanks everyone for the helpful replies. Since I've got Bondo here for other work, I'll try that first with sanding. If I have some troubles, I'll report back.
Ron

Offline Curt Boyer

  • Posts: 192
Re: What is the best way to fill screw holes in PVC trim?
« Reply #12 on: August 20, 2014, 11:01 PM »
To remove scratches and small dents from PVC use a heat gun. It pops right out with the heat. If you sand with 320 grit it will remove the scratches and make the surface look factory. They make a putty stick similar to one you would use for hardwoods to fill nail holes. I'll take a picture of it tomorrow it's in my truck. Never use caulk to fill nail holes interior or exterior. We've had good luck using lite weight exterior putty for nail holes much easier to work with than Bondo. We use Cortex screws and plugs when the job allows.

Offline jmarkflesher

  • Posts: 248
  • Scoot
Re: What is the best way to fill screw holes in PVC trim?
« Reply #13 on: August 22, 2014, 10:36 AM »
Late post but I used Azek on my new porch. Used fairly large headed ss screws on 1x8's 16 foot long for the rakes. Used two part Azek adhesive then had to sand flat. The sun at a certian time of day showed every screw. Ended up priming and painting. Some say you don't paint the Azek and some say you do. No more plastic for me. Boral comes in 1X4,6,8 and 10". Also several molding profiles. I sit on my porch in the summer and hear ping, pop and crack as the Azek expands. Boral expands very little. Thanks, MARK
« Last Edit: August 22, 2014, 03:24 PM by jmarkflesher »
DEC 21st, 2012 TIC TIC TIC   WAS A DUD

Offline Curt Boyer

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #14 on: August 22, 2014, 06:12 PM »
Ron, here's what we use for nail holes.

Offline RonMiller

  • Posts: 318
Re: What is the best way to fill screw holes in PVC trim?
« Reply #15 on: August 22, 2014, 08:52 PM »
Thanks for the continuing help. I used Bondo and it worked fairly well but of course the operative word there is "work". It's always that. I'll try these other things when another opportunity arises. Thanks again, all.
Ron

Offline roblg3

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #16 on: August 22, 2014, 09:12 PM »
there is a 2 part epoxy that is available with a special caulk gun.  i think it's AZEK but can't remeber for sure.  If you want, I'll hit my supply house monday and get the exact particulars
Rob Gardner
Operator
RL3 Enterprises

Offline Curt Boyer

  • Posts: 192
Re: What is the best way to fill screw holes in PVC trim?
« Reply #17 on: August 22, 2014, 09:25 PM »
Trimwelder and Bondnfil make two part epoxy for laminating PVC as well as filling holes. You need a special caulk gun for them. The two parts mix in the replaceable tip. You need to have extra tips as you will go through them fast especially if it's hot. They have two kinds,a slow set and quick set. It's expensive and doesn't sand very well. Even when you over fill the hole it shrinks when setting and is tough to make the holes disappear. Azek makes a normal caulk gun epoxy that Home Depot sells, I haven't tried it yet.
Curt

Offline roblg3

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Re: What is the best way to fill screw holes in PVC trim?
« Reply #18 on: August 22, 2014, 09:30 PM »
come to think of it...it IS trimwelder i was speaking of.  Thanks for the heads up Curt.  I think i'll just keeping using bondo instead of it.
Rob Gardner
Operator
RL3 Enterprises