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Sealing of foamboard.......

StrogeyStrogeyOGR Forum Member

Question for those of you that are expeienced with using Elmers foamboard. If the edges of the board get wet will the internal foam absord the water and in tuen distort thr surface? If so is it possible to seal the edges with anything in order to prvent this from hapeening? I ask because I have edges that will be eventually have scenic materials up against them and am worried that the foam will absord the water from the materials or the glue and swell. In most cases this will be Bill's Scenery Fiber which has quite a bit of water absorbed into it. How about the surface of the Foamboard. The same scenario exists. Fiber may be applied to the surface. Will it absorb the water? And if so can it just be sealed with clearcoat of some sort?

 

Thanks in advance folks!

Ken

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StrogeyStrogeyOGR Forum Member

Since I do not have access to the equipment nor is it feasible for me to cut Masonite I was using it for roads and parking lot areas. It is much easier for me to have a large piece of material that I can somewhat detail on a desk and then get help to place it on the center of the layout. Being in a wheelchair really limits the amount of reach I have. Basically the building outlines could be drawn on the foamboard and then details added around said outlines. I thought it was a good idea to help me get around a problem that I had been struggleing with for awhile. See I cannot stand up to detail the center area. I will take picture and post when I get home from work.

 

Guess nothing is as easy as it seems.........

D DennisBOGR Forum Member DIGITAL SUBSCRIBER

Strogey,

 

I always glue down foamcore then paint it with latex paint before applying any scenery. I believe you have my book. I've detailed it's use throughout. Sealing the foam edge with white glue is a great idea if you ever need to glue something to it using any type of glue that will attack the foam like Super Glue.

 

Dennis

wsdimennawsdimennaOGR Forum Member
Ken:
 
Think there may be an easier way to make the scene movable rather then using foamcore.  What I have done is apply the modeling fiber to construction foam over an adhesive drywall mesh. Once dry you can lift off the fiber sheet by using a putty knife or spatula. It lifts off very well once you get it started, and don't worry about whether the drywall tape stays attached.  You can cut the sheet with heavy scissors.   Wet the surface you are going to apply it to on layout and press it down.. Maybe use a touch of dilute glue around edges.
 
I did a plowed field that way and recently have done a number of dirt roads.
 
Here is photo link
 
 
The largest sheet I have done is 2 by 3 ft
 
In this case a razor knife was used to cut dirt road out of a demo I did at show. I put it in inventory for future use.
 
Thanks for using and trying product
 
Bill D
Last edited by wsdimenna
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