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Track/Roadbed Adhesives

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  • Track/Roadbed Adhesives

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ID:	1000344 Back in the early part of this year, when I started to lay my code 83 track with the Woodland Scenics foam road bed, I decided to do a test on adhesives to use. I had read several articles and wanted to prove to myself which product would deliver the best results.

    The two products I choose were Loctite Power Grab All Purpose interior construction adhesive and Dap Dynaflex 230, premium elastomeric interior/exterior sealant.
    I usually have had the best results with Loctite products and because it says"adhesive" on the tube I figured this would be my end choice over a "sealant" . However if you look at the photos, the Loctite product has peeled away from the foam roadbed and does not stick to the track ties all that well.

    On the other hand, the Dap product performed very very well in my opinion. The Dynaflex has stuck to the track ties and foam extremely well and the foam is stuck to the wood very well.
    I can remove the foam away from the wood with the Dynaflex, but I have to use a blade/putty knife and the foam comes up intact. I believe under normal use the track and roadbed are "stuck down" and should work with no problems. I used white Dynaflex for my test but have purchased several tubes in clear.

    The photos show pretty well the results.

    Hope this might be of use to someone.
    Attached Files


  • #2
    John, I've used the Loctite and have had zero peeling. We used a very thin coat of the Powergrab, and then put weights on the roadbed and let it set up/dry for at least an hour (overnight is better) then a thin coat over the roadbed, again setting the track and using a little weight overnight. How long has the Powergrab been in place before it is delaminating? I used cork roadbed, wonder if the foam flexes too much? It looks like it stuck to the track, but has peeled away from the foam?

    Last edited by BurleyJim; 07-02-2022, 05:26 AM.
    Take the red pill


    • #3
      That is strange John. I always used Loctite Power Grab and never had a problem like that. However, like Jim, I too used cork roadbed, and never used this stuff on foam. attached is a Product Overview from the company. So it should have worked just fine.
      Here is a Product Overview: Power Grab sets in 10 minutes and fully cures in 24 hours without fear of shrinkage or breaks. This versatile and durable formula is great for professional and amateur jobs alike and bonds to most common construction materials such as wood, plywood, OSB, MDF, concrete, glass, marble, granite, tile, porcelain, stone, masonry, brick, foam insulation of all sorts including EPS (expanded polystyrene foam), XPS (extruded polystyrene foam), metal, ceramic, drywall, rigid and cellular vinyl/PVC trim and molding, and some plastics. Loctite Power Grab Ultimate formula is solvent free and VOC compliant.

      Louis L&R Western Railroad
      Pacific Northwest Logging in the East Coast


      • #4
        Jim & Louis.........I can only guess the difference in results would be the use of cork roadbed instead of the foam.

        I will have to say before I did my test, there were more folks using the Loctite over the Dap product. But some were touting their best results with the Dap. So the basis for my "test".
        The track used is Atlas code 100, flex track. I placed a can of Van Camps "best" pork and beans on each of the track sections to try to get an equal comparison.
        The Loctite did stick pretty well to the track ties, but in my opinion the Dap did a better job. The samples are glued on the same piece of wood again to try and get an "apples to apples" kind of test.

        The photo of the Loctite product peeling away from the foam tells it all.
        It did not seem to be as flexible as the Dap. Some of the Loctite adhesive broke away between the ties.

        That test piece was done back in Jan or Feb and was kept "indoors" since then. It just so happened I took a few minutes to post this now before my next "real work" project begins. So the sample is about 5 months old.

        In the end, as is usually the case, stick (no pun intended) with what works best for you. For me, I'll be using the Dap product.

        Please note I do not work for, have stock in or in any way am I connected to the Dap or Loctite brands.

        Happy 4th of July to all...........John



        • #5
          I’ve always said:

          A little DAP will do you!
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          I’ve used this Dap Alex Plus clear latex caulkon cork roadbed, to put the cork itself down, I use “N” scale roadbed on my HO layout and as well as putting the Atlas C-100 flex track used. I use a small spreader with serration similar to a flooring tile installer uses to keep the amount used reasonable. THAT is something you have to work out.

          After I put the track down I use an old rubber ink brayer tool to press it in place then weigh it down with 2-3-4 weights.

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          Last edited by k9wrangler; 07-02-2022, 09:32 PM. Reason: Add info
          Karl Scribner-Curmudgeon

          Cedar Swamp
          SW of Manistique, MI

          Avatar image by Savannah Lyn Burgess 7-15-2022