Vapor Barrier

Manufacturer:

Concure Systems
E. Briarwood Terrace
Phoenix, AZ 85048
Ph: (480) 820-7171
Fax: (480) 820-7787

Product Description:

CONCURE SYSTEMS Vapor Barrier is a three-step topical system, designed to stop floor coverings from de-bonding due to moisture. Each step works independently of the other to waterproof a concrete slab. The system is water based and designed for fast track installations.

This 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 1 is a silicate sealer that penetrates into the concrete slab. A reaction occurs between the lime and excess Portland cement, which is always present, and forms Calcium Silicate Hydrate (CSH). This process will encapsulate the moisture to create a permanent break in the capillaries of the concrete, stopping all moisture related problems.

Step 2 is an acrylic polymer that is designed to seal and prime the surface of the concrete.

Step 3 of the system is a waterproof cementitious coating that is applied to the concrete in a thin layer, using a broom or brush. Step 3 is applied 7-12 mils. thickness. This cementitious membrane will enhance adhesion and stop excess vapor molecules from migrating throughout the slab.

This system is designed to stop moisture problems measured at all levels intolerant to the installation of flooring as recommended by flooring manufacturers as indicated by the results 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 Systems Vapor Barrier is a topically applied system designed to prevent floor coverings from de-bonding due to excessive moisture.

Vapor Barrier is a topical system that is especially useful in new construction when excessive moisture is detected before the original flooring is installed.

** 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 coverings

Test - Results:

Adhesion ASTM C952            155psi
Tensile                               280psi

Flexural Strength
ASTM C580                   472psi

Permeability 
CRD-48-73                 2.63x10-10 cm/sec

Composition:

Step 1 is a formulated blend of silicates and reactive ingredients.

Step 2 is an acrylic polymer designed to act as a surface sealer and primer.

Step 3 is a polymer enhanced, cementitious based coasting that provides excellent waterproofing and bonding characteristics.

Surface Preparation:

A brush blast to an ICRI ( International Concrete Repair Institute) profile 4, using 330 shot, is required. The surface, after shot blasting is completed, should be white in color with no signs of curing agents or other types of concrete finished surface.  After brush blasting, make sure the surface is clean, with no signs of dirt, oil, curing agents, sealers or adhesive residues. All loose material and dirt must be removed from cracks in order to allow proper bonding.

APPLICATION:

Step 1: Using a low-pressure sprayer, apply one generous coat. Step 1 covers 200-300 square feet per gallon. Do not let the material pond on the surface. Broom material evenly to cover all areas. Dry time is usually about one hour, depending upon the temperature and jobsite conditions. When Step 1 is dry to the touch, Step 2 can be applied.

Step 2: Is applied with a soft bristle broom or paint roller at a rate of 200-250 square feet per gallon. Step 3 can be applied when Step 2 is dry to the touch.

Step 3: Using a broom or brush apply a thin coat of Step . Step 3 will yield 175 square feet per bag. Step 3 must be applied to the entire surface being treated, including: all cracks, saw-cuts and control joints.

INSTALLATION OF FLOOR COVERING

Adhesives and floor coverings may be installed when Step 3 (cementitious coating) has hardened and is dry. Dry time may vary depending on air temperature, but treated areas should dry by the next day. A Calcium Chloride test must be preformed when step 3 is dry and before flooring is installed.

Mixing:

Step 1: Stir before application.

Step 2: Apply product as supplied.
Step 3: Mix powder, water, polymer as required by instructions.

FIELD SERVICE:

Installation by a floor-covering contractor can be done under the supervision of a Concure Systems representative or by a corporate installation team.