I have just sealed a piece of timber with Acrylic Satin Clear, will this be completely waterproof when dry?

Question

I have just sealed a piece of timber with Acrylic Satin Clear, will this be completely waterproof when dry?

Answer 1

It will take more than one coat of sealer and Also  the can should tell you weather or not it will be waterproof .

Answer 2

When you say "timber" do you mean like a branch or even bare piece of wood?  If so, generally anything with any residual moisture in it (even if you can't feel it) should be completely dried out before a sealer is used on it.

As for waterproofness, acrylic sealers (polyurethanes, etc) will be waterproof for all intents and purposes if the coverage is complete and reasonably thick (but many may use more than one coat to be sure there really is complete coverage, and to avoid any cracks that could happen later from changes in temperature, etc.).

If the item is completely submerged in water over a long time though, most sealers will absorb a bit of moisture, making them look a bit cloudy.  In that case you could try a "marine" sealer, or an epoxy resin, but don't know if even those could tolerate long term submersion without any effects.

P.S.  Sometimes it takes acrylics (sealers and paints) a week or so to fully "cure" as opposed to just drying.

HTH,

Diane B.