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Attaching White PVC Trim To CMU Block Wall.

 
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Old 06-18-2016, 04:45 PM   #1
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Attaching White PVC Trim To CMU Block Wall.


Looking for ideas on how to attach PVC sheets and other PVC trim details to a CMU wall.
Would like glue and fasten with Tapcons then use cortex plugs but not sure if Cortex makes a larger size plug?

Any advice would be great
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Old 06-18-2016, 05:26 PM   #2
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Re: Attaching White PVC Trim To CMU Block Wall.


i don't even think you can buy just plugs..large or otherwize

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Old 06-18-2016, 06:03 PM   #3
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Re: Attaching White PVC Trim To CMU Block Wall.


I'll end up making my own


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Old 06-18-2016, 06:24 PM   #4
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Re: Attaching White PVC Trim To CMU Block Wall.


That's what I'd do.Buy a plug cutter and make your own.Wish I knew where all my plug cutters went over the years .They seem to disappear quicker than anything else.
Plug cutters and countersinks.
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Old 06-18-2016, 10:16 PM   #5
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Re: Attaching White PVC Trim To CMU Block Wall.


Instead of tapcons, i like to drill a 3/16 hole, insert solder and use grk screws. Tapcons always seem to break at the worst time. Any one else use the solder trick?
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Old 06-18-2016, 11:20 PM   #6
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by Lettusbee View Post
Instead of tapcons, i like to drill a 3/16 hole, insert solder and use grk screws. Tapcons always seem to break at the worst time. Any one else use the solder trick?
No... But I like that idea
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Old 06-19-2016, 05:13 AM   #7
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by Lettusbee View Post
Instead of tapcons, i like to drill a 3/16 hole, insert solder and use grk screws. Tapcons always seem to break at the worst time. Any one else use the solder trick?
I gotta remember this. I will be fastening wood trim to a CMU wall in my house.
When you say solder are you talking just a short piece cut off a roll of solder?
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Old 06-19-2016, 09:10 AM   #8
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Re: Attaching White PVC Trim To CMU Block Wall.


Gorilla glue?
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Old 06-19-2016, 10:24 AM   #9
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Re: Attaching White PVC Trim To CMU Block Wall.


I agree, they always break at the worst tim . We switched to simpson Titan screws.

And they come in white.

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Old 06-19-2016, 10:32 AM   #10
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Re: Attaching White PVC Trim To CMU Block Wall.


whats the detail dave?Can you hide most of the fasteners under additional trim?
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Old 06-19-2016, 03:30 PM   #11
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Re: Attaching White PVC Trim To CMU Block Wall.


This is the one i use with gold deck screws, and some of the grks. It's in the welding aisle at home desperate. The solder from tge plumbing section never seemed to work. Gauge of wire, diameter of fastener, and hole diameter are all variable. I don't remember what i used for grk trim head screws, but usually have somewhere inconspicuous to experiment. Stranded copper works well also. Solid copper has never worked.
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Old 06-19-2016, 03:44 PM   #12
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by festerized View Post
Looking for ideas on how to attach ” PVC sheets and other PVC trim details to a CMU wall.
Would like glue and fasten with Tapcons then use cortex plugs but not sure if Cortex makes a larger size plug?

Any advice would be great
tapcon and plug but will have most likely make your own plug. make sure you use the phillips screw head tapcon that way your countersink does not have to be big enough to accommodate hex head. then scrape off excess wih chisel and 120 grit sandpaper. like it never happened.
also don't forget to back glue probab;y an overkill but you know your job and conditions. gorrilla is new structural 10oz tube is ridiculous.

measure the tap con screw head to determine bit size.

https://www.amazon.com/s/ref=nb_sb_n...ords=plug+bits

lowes and depot have them too. cheap.

Last edited by CITY DECKS INC; 06-19-2016 at 03:48 PM.
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Old 06-19-2016, 04:12 PM   #13
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Re: Attaching White PVC Trim To CMU Block Wall.


Not to insult your intelligence, just a friendly reminder that if there's a cap/coating on the boards/panels you're using and you're making plugs for it you have to do sort of a reverse plug from scrap stock because the plug cutters are widest at the bottom.

Some good tips in this thread about making plugs in composite materials
https://www.contractortalk.com/f50/su...x-like-138362/


Out of curiosity, does anyone use the Grex concrete T-nailer (http://www.grexusa.com/grexusa/products.php5?id=2564) for this kind of situation, or is hole filling too much work?
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Old 06-19-2016, 04:55 PM   #14
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by Philament View Post
Not to insult your intelligence, just a friendly reminder that if there's a cap/coating on the boards/panels you're using and you're making plugs for it you have to do sort of a reverse plug from scrap stock because the plug cutters are widest at the bottom.

Some good tips in this thread about making plugs in composite materials
https://www.contractortalk.com/f50/su...x-like-138362/


Out of curiosity, does anyone use the Grex concrete T-nailer (http://www.grexusa.com/grexusa/products.php5?id=2564) for this kind of situation, or is hole filling too much work?
no insult here. just one of those details that can be easily overlooked.
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Old 06-19-2016, 07:25 PM   #15
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by Tom Struble View Post
whats the detail dave?Can you hide most of the fasteners under additional trim?
Not much details, i can hide screws along the two sides. I planned on installing 3 1/2 stock along the side to match siding corners above.
I'll get a pic of the elevation plan and house this week.
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Old 06-19-2016, 08:25 PM   #16
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Re: Attaching White PVC Trim To CMU Block Wall.


I hate Tapcons...as was mentioned they seem to strip out or break at the worst times...GRK Caliburns are about the only way I go now, haven't had one strip out or break yet...I'm sure one will strip out eventually, but so far I'm a believer!
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Old 06-20-2016, 12:06 AM   #17
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Re: Attaching White PVC Trim To CMU Block Wall.


Quote:
Originally Posted by Lettusbee View Post
Instead of tapcons, i like to drill a 3/16 hole, insert solder and use grk screws. Tapcons always seem to break at the worst time. Any one else use the solder trick?
It's not really a trick is what you do when you don't have the correct fastener. You can also use a scrap piece of copper wire, zip tie tails, the handle of a lollypop, whatever ya got laying around.

The problem with concrete friction fasteners is that they require slightly different sizes of holes in block vs concrete. That's why they make specialty bits.

...But with a tapcon you will damn near never break them off in block, they work best in block with their specified drill size. Concrete is the problem.
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Old 06-20-2016, 01:31 AM   #18
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Re: Attaching White PVC Trim To CMU Block Wall.


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Originally Posted by Inner10 View Post
It's not really a trick is what you do when you don't have the correct fastener. You can also use a scrap piece of copper wire, zip tie tails, the handle of a lollypop, whatever ya got laying around.

The problem with concrete friction fasteners is that they require slightly different sizes of holes in block vs concrete. That's why they make specialty bits.

...But with a tapcon you will damn near never break them off in block, they work best in block with their specified drill size. Concrete is the problem.
With tapcons, it's all about, or aboot as Canadians say, proper hole size and depth, and blowing the dust out of the hole.
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Old 06-20-2016, 06:03 AM   #19
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Re: Attaching White PVC Trim To CMU Block Wall.


Run wood or metal furring strips along the wall in a vertical pattern every 16 inches like you're getting ready to sheetrock it. Use glue and cut nails to attach the furring strips to the cmu. Then you'll have a surface that can be nailed or screwed.

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