Mosaic door header

[Wayne]

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Oh...Go for it, De!!  I use alot of plywood for mosaics but recently I've started using a lot of MDF.  Plywood warps and MDF doesn't if you seal it in the beginning.
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When using any type of wood, you must seal it first with a real sealer not a paint.  One such sealer commonly used is Kiltz which is sold everywhere.  When using plywood, do not use the thin stuff.  You will find the 3/4" works fine.  All wood should be kept to inside mosaics only.  Another really popular and very light substrate is the Wedi board.  It is usually sold through tile shops in 3 x 5 sheets and smaller pieces via online mosaic shops.

Also, sealing the grout when done keeps the grout lines from becoming discolored due to dust and grime as the years progress.

[meaco]

That's a good point, Wayne.  I use Kiltz...and it's gr-8!

[nansea121]

  what's MDF board?

mmmm...Kiltz...now where's my pen?

[Wayne]

what's MDF board?

mmmm...Kiltz...now where's my pen?

Medium Density Fiberboard which is used for furniture and as a substrate for veneers.

[nansea121]

Thanks Wayne!!! I wrote that down:)