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Composite Trim

Doc | Posted in Construction Techniques on January 30, 2006 02:06am

I have two questions in regards to installing some base/floor trim in my bathroom.  First, I bought composite trim.  I thought it would be better in a damp environment like the bathroom.  First, can I use a finish gun with composite trim or will it crack or split.  Secondly, the walls are plaster and I’m worried they will crack from a finish gun, or that the finish nails won’t even penetrate the plaster.  Should I pre-drill and use nails instead?  Don’t have a lot of experience with plaster.  I just finished remodelling most of the bathroom, but most of the wall surface was left undisturbed.  The plaster that I did remove had very coarse aggregate in it, and it’s about and inch think over 1/2 inch think drywall strips.  As always, thanks in advance for any help.

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  1. DonCanDo | Jan 30, 2006 03:24pm | #1

    I've used an 18 gauge finish nailer on composite (plastic) trim.  It worked just fine, but I'm not a fan of plastic trim.  It was supplied, so I worked with what I was given.  I doubt if it would've worked on shoe molding without cracking.  The stuff is so cheap, why not experiment?

    I think you'll be fine with the paster too.  Finish nailers probably cause less vibration to the walls than hammering, even with a pilot hole.

    -Don

  2. FastEddie | Jan 30, 2006 04:56pm | #2

    Glue to trim in place.  Get a small tub of the adhesive that's used for rubber base.

     

     

    "When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it."  T. Roosevelt

    1. Doc | Jan 31, 2006 01:29pm | #3

      Thanks for the tips.  Both of those ideas are things I was considering.  I may cut a small piece and test the use of a finish gun inside the closet where it won't matter if something doesn't work out.  Also, I had thought of glueing it as well.  Hopefully the combination works out.  I'll give it all a try this weekend.  Thanks again.

      1. User avater
        Matt | Jan 31, 2006 02:11pm | #4

        Just out of curiosity, when you say "composite trim" exactly what do you mean?  Plastic, wood/plastic combination, MDF, or what?  Composite is kind of an ambiguous word...

        1. Doc | Jan 31, 2006 03:53pm | #5

          I'm sorry, I thought I specified that in my original post.  It's plastic.  I bought it at Home Depot.  I've seen the trim that feels like styrofoam, but this is a fairly heavy and dense plastic.  Hope that helps. 

          1. csnow | Jan 31, 2006 05:32pm | #6

            It's, probably the "Marley Mouldings" stuff, or "Royal Mouldings" is their new name.

            Good stuff. It will not split or crack.  It can sometime leave a bit of distorted plastic proud of the face, which can be cut off flush with a razor blade or utility knife.

            If you are not painting it, consider using glue so you do not have to patch the holes.

            View Image

  3. rasconc | Jan 31, 2006 06:38pm | #7

    I use the Loctite "Powergrab" adhesive.  Then caulk the top with "White Lightning" on base, top and bottom on cove, etc.  A couple of 18 ga nails usually helps.



    Edited 1/31/2006 10:40 am ET by rasconc

    1. Doc | Feb 06, 2006 05:17am | #9

      Thanks for all the tips.  I used Loctite, and everything went perfectly.  One more step closer to finishing this project that I've been dragging my feet on.  Thanks again.

  4. mike4244 | Jan 31, 2006 09:19pm | #8

    Locate the studs on the wall and nail the trim with any nail gun.I use a 15ga for base,18ga for smaller stuff,exactly like it was wood. Some plastic trim the joints can be glued together with a special cement.Azec is one brand. If  there is a particular glue that is specified,use it, don't substitute.Finish nails for pneumatics are 2 1/2" maximum length.If the plaster and gyp board behind it are 1 1/2" or so thick and your trim is 3/4" thick,then hand nail with 16d casing nails. I use a nail spinner for this. The spinner will turn the nail about 3/4 of the way in, hammer and set the nail the rest of the way .

    mike

  5. Cash | Feb 06, 2006 05:53am | #10

    When we install solid surface material, and paneling sheets that cannot have any holes, we use a good adhesive, and hot melt glue to hold it until the adhesive sets. Might try it on scrap first to avoid melting your trim.

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