Installation Instructions
These instructions based on ASTM E 1643 "Standard Practice for Installation of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs."INSTALLATION INSTRUCTIONS
Stego Wrap Vapor Barrier / Vapor Retarder
IMPORTANT: Please read these installation instructions completely prior to beginning any Stego Wrap installation to ensure suitable use of the product. (See detail, left.)
These instructions based on ASTM E 1643 "Standard Practice for Installation of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs"
UNDER SLAB INSTRUCTIONS:
1. Stego Wrap can be installed over an aggregate, sand or tamped earth base. It is not necessary to have a perfectly smooth 1 to 3 inch sand base, as Stego Wrap is tough enough to withstand rugged construction environments.
2. Unroll Stego Wrap over the area where the slab is to be poured. Stego Wrap should completely cover the pour area. All joints/seams both lateral and butt should be overlapped six inches and taped using Stego Tape. (See detail, left.)
NOTE: The area of adhesion should be free from dust, dirt and moisture to allow maximum adhesion of the pressure sensitive tape.
3. The most efficient installation methodology includes placing Stego Wrap on top of the footing and against the vertical wall. Stego Wrap will then be sandwiched between the footing, vertical wall and poured concrete floor. This placement will help protect the concrete slab from external moisture sources after the slab has been poured.
4. IMPORTANT: All penetrations must be sealed. All pipe, ducting, rebar and wire penetrations should be sealed using Stego Wrap, TAPE and/or Mastic. (See detail, left.)
5. In the event that Stego Wrap is damaged during or after installation, repairs must be made. Cut a piece of Stego Wrap large enough to cover any damage by a minimum overlap of six inches in all directions. Clean all adhesion areas of dust, dirt and moisture. Tape down all edges using Stego Tape.
6. Many vapor retarders recommend a 3-inch to 6-inch layer of fine washed gravel or sand on top of the barrier before the pour to guard against the possibility of damage due to the placement of reinforcement and concrete. This is permissible but not a necessity with Stego Wrap. Stego Wrap is strong enough to withstand normal construction traffic without a protective barrier. In fact, many flooring companies recommend placement of the concrete slab directly on the vapor barrier. This eliminates the potential for water to be trapped in a blotter layer and ultimately resurfacing through the slab and adversely affecting the flooring adhesive.
NOTE: There are well-publicized pros and cons regarding different approaches to vapor barrier placement. Consult local building codes and regulations along with the design or architectural firm's guidelines before proceeding.
REMEMBER: If damaged, Stego Wrap must be repaired using the techniques outlined above.
VERTICAL WALL INSTRUCTIONS:
1. Install an approved waterproofing membrane according to the manufacturer's installation instructions. This may include sheet goods, or liquid applied membranes by they roll, brush or spray.
2. While the membrane is still tacky, install Stego Wrap as a protective course over the applied waterproofing membrane. We recommend the use of a termination bar mechanically fastened to the wall at the top termination of the waterproofing membrane.
3. Supervised care must be taken during back filling against the material so that it is not damaged or punctured. If damage occurs, patch using the techniques outlined above.
WARNING: Any untreated punctures, tears or damage during back filling will greatly reduce the effectiveness of Stego Wrap as a protection course.