Concrete Garage Floor Vapor Barrier

A vapor barrier should be used for all concrete floors and slabs that are going to receive an impermeable floor finish like epoxy laminate linoleum and wood or if the concrete floor will be used for any purpose where the passage of water vapor through the floor may create problems.

Concrete garage floor vapor barrier. There is little you can do to correct this problem other than removing the existing slab and pouring a new one with a vapor barrier under it or put a vapor barrier on top of the existing slab and. Check these three companies out for yourself and make your own decision as to which one is the best concrete floor vapor barrier for your project. Tape a 2 x 2 piece of clear plastic over the slab and leave for 24 hours. Ft 24 hours in 82 days with a vapor barrier compared to 144 days when exposed to vapor from below.

Do not apply a sealer or floor paint to a garage floor that doesn t have a vapor barrier since the finish will not adhere well to the surface. Lay vapor barrier. All three companies vapor barriers meet or exceeds all requirements of astm e 1745 09 class a b c. From garages utility buildings and other unheated accessory structures.

If your slab was originally poured with no underlying vapor barrier or you have high ground water it s possible for water vapor pressure to actually lift coatings off the surface. A 6 mil 0 006 inch. 152 µm polyethylene or approved vapor retarder with joints lapped not less than 6 inches 152 mm shall be placed between the concrete floor slab and the base course or the prepared subgrade where no base course exists. Run the polyethylene up the sides of the walls 3 to 4 inches and secure to the walls with.

Vapor barrier moisture issues in epoxy garage floors. Check for existing moisture issues. This is often so but things change when the concrete is on damp ground below the water table or in direct contact with moisture. Insulating concrete garage floors begins with covering the entire floor with 6 mil polyethylene which will serve as a vapor barrier.

It would seem that painting a concrete slab or wall should be a simple task with minimal problems. Aci 302 2r 06 guide for concrete floors that receive moisture sensitive flooring materials estimates that concrete with a w c of 0 5 will dry to an mver of 3 pounds 1000 sq. The vapor retarder may be omitted. Epoxy floor paint.