Laying Foam Roadbed

[Flash53]

I am about to start laying track and have 2 questions that I would like help on. The track will be on 1" extruded foam sub roadbed which is laying on 1/4" plywood.

- I plan on using WS foam as the roadbed and I'm not sure that best way to attach the WS foam to the extruded foam? I'm guessing liquid nails or some other type of glue.

- Should I be putting plaster cloth or a skim coat of plaster over the extruded foam before gluing or whatever the foam roadbed?

Sorry if this is covered in another thread.

Steve

[tjcruiser]

Steve,

Fuzzy partial answer (thought, really) on my part ...

Home center stores (Home Depot, etc.) sell an adhesive (in a caulk-gun style tube) specifically formulated for pink-stuff rigid foam insulation. You might experiment with that, before you go the Liquid Nails, route. That said, Liq Nails actually offers several products, some of which might be formulated for use with insulation foam.

You might consider quick-tacking the WS foam down with a few dabs of hot glue (for a quick grab), in addition to the base adhesive.

Best to check adhesion / material compatibility on some scraps before jumping into the real job.

Cheers,

TJ

[swiggy]

i used low temp hot glue - you have to be somewhat quick, but it works well.

[tkruger]

Standard Liquid Nails will not adhere to foam. You need to get Liquid Nails for foam. Liquid Nails is just a brand name. There are other companies that also make adhesives for foam.