Hi Miamigal, the Acrylic Primer SealerTM is specially formulated to penetrate and seal internal cracks and porous surfaces such as concrete. Also recommended to seal and protect exposed architectural concrete exposed aggregate sidewalks, ornamental stone and precast concrete. Unfortunately it is no suitable for wood. What we highly recommend is the Aqua-Proof Primer which can be used as a waterproofing system in planters or below grade applications. Always have to be protected from UV radiation, but in your case you don't have that problem. May be used as a protection under tiles in wet areas such as bathrooms, food processing areas, balconies. Hope you are still on time to do it with this Aqua Proof Primer.
Hi Joe, the AS-210™ is a 100% acrylic polymer elastomeric roof & wall primer specially designed to penetrate and waterproof concrete and other surfaces to prevent water infiltration. AS-210™ is also recommended for a variety of properly prepared, previously painted surfaces to bind light to moderate chalk (oxidation) and increase adhesion of the finish coat. To be used in residential, architectural, commercial and light industrial applications. It is clear and it does not have a gloss finish to it as it penetrates the substrate which ever it was used.
The Lanco 100% Acrylic Roof and Wall Primer Sealer, covers 350 sqft per Gallon