Product Name:
Vapor Barrier

Manufacturer:
CONCURE PRODUCTS INC
710 Trainor Road
Chester PA 19013
Phone 610-497-0198
Toll Free 800-925-7746
Fax 610-497 -3918

Product Description:
Concure Vapor Barrier is a two-step system, designed to stop floor coverings from de-bonding due to moisture. Each step works independently of the other to waterproof a concrete structure.  The system is water-based and is designed for fast track installations. The Concure Vapor Barrier system stops hydrostatic pressure, capillary action, and moisture migration. It also creates a negative and positive side barrier. This product is compatible with all adhesives and floor coverings.

Step A is a water-based sealer that penetrates into the concrete slab. This reaction occurs between the lime and excess Portland cement deposit in the concrete, called Calcium Silicate Hydrate (C-S-H); which is always present in concrete substrates. This process will encapsulate the moisture to create a permanent break in the capillaries of the concrete, stopping all moisture-related problems.

Step B of the Concure Vapor Barrier system is a waterproof cementitious coating that is applied to the concrete in a thin layer, using a broom or brush. Step B should be applied 5 mils in maximum thickness.  Step B is the cementitious membrane will increase adhesion of adhesives, and stop excess vapor molecules from migrating through out the slab. This system is designed to
stop moisture problems measuring up to 10lbs, as indicated by the result of a calcium chloride test.

Testing:
Prior to shot blasting, a calcium chloride test is required. The results of this test must be registered with Concure Corporation.

Uses:
Concure Vapor Barrier is used to stop below, on, or above grade floor coverings from de-bonding due to moisture related problems.

**NOTE: Vapor Barrier is not a patch or leveling product. A skim coat or a leveling product may be needed to make the concrete slab suitable for floor covering.

Test Results:

Composition:
Step A is a formulated blend of water based acrylic resins and reactive active ingredients.
Step B is a polymer enhanced, cementitious based coating that provides both excellent waterproofing, and bonding adhesion.

Surface Preparation:
A brush blast, using 330 shot, is required. The surface after the shot blasting has been completed should be white in color with no signs of curing agents or other types of concrete finished surfaces. After brush blasting, make sure that the surface is clean of all dirt, oil, curing agents, waxes

sealers, and adhesive residues. All loose material and dirt must be removed from cracks in order to allow proper bonding.

Application:
STEP A:
Using a low-pressure sprayer, apply one generous coat. Step A covers 250 square feet per gallon. Do not let the material pond on the surface. Always broom material evenly to cover all areas. Dry time is usually about one hour, depending upon temperature and job site conditions. When Step A is dry to the touch, then Step B can be applied.

Step B:
Using a broom or brush apply a thin coat of Step B. Step B will yield 250 square feet per bag. Do not over-water. This material is gray in color when dry. Step B must be applied to the entire surface that is being treated including all cracks, saw cuts, and control joints.

Installation of Floor Covering: Adhesives and floor coverings may be installed when Step B (cementitious coating) is hardened and dry. Dry time may vary, depending on air temperature, but the treated areas should be dry by the next day. A mat and/or mat bond test must be performed once Step B has dried.

Mixing:
STEP A: Stir before application.

Step B:
Mix two parts powder into one parts water, by volume (25 lbs. of powder to 6 quarts water.) Do not over-water; ma terial should be gray in color when dry.

Field Service: Installation by a floor contractor can be done under the supervision of a Concure representative or a corporate installation team.