I am planning on putting down some ground cover on my layout to give it a more realistic look. My question is can I put it down on an existing grass mat? Would glue work? What kind? Any suggestions would be much appreciated.
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I have used a spray adhesive on grass mat just before putting down the ground cover, This will cause it to stick somewhat to allow you to spray over the top of the ground cover without the spray causing it to blow away. Then I finish-off with a matt spray sealer. although that may not really be necessary in most cases.
Since I often want to target specific areas (as when putting down grass here and gravel there, etc.) and a spray can can't target that well, I brush on a 50/50 mixture of white glue and water to just the areas I want and then sprinkle on the 'grass" heavily the ground cover I want. Wait 24 hours and brush off/vaccuum the rest to re-use again. Then do it again for the gravel, etc.
eric's trains (Videos>Tutorials<Building o scale mountains part 5 of 6 and part 4 of 6 from 5:54)and woodland scenics (Ready Grass Landscape kit)have some nice how-to video's. 50/50 white glue and water is what you use. Now, if you have a paper backed grass mat, that may be an issue. Test an out of the way section with either brush or spray method.
