WeatherStop Tapes are a peel and stick type flashing with self-sealing properties and a polyester scrim facing designed for use with Master Wall® Systems. The tapes feature low initial grab for repositioning that gradually increases over time.

Tape Sizes

WeatherStop Tapes are available in the following size rolls:

4 inch x 100 feet (10.2cm x 30.5m)

6 inch x 100 feet (15.2cm x 30.5m)

12 inch x 100 feet (30.5cm x 30.5m)

Weight & Packaging

WeatherStop Flashing Tape is packaged in cases weighing 82 lbs (37.2kg).

4 inch (10.2cm) Wide:

12 rolls/case

18 cases/pallet

6 inch (15.2 cm) Wide:

8 rolls/case

18 cases/pallet

12 inch (30.5 cm) Wide:

4 rolls/case

18 cases/pallet

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Window Flashing Application

1. Starting at sill, install sill piece first and run onto framing and up the sides of the jambs a minimum of 12″ (305 mm). Flashing should lap about 9″ (220 mm) onto the water barrier below.

2. Install jamb flashing onto framing and over the water barrier on the sides.

3. Install head flashing in a similar fashion with the head flashing and water barrier going over this flashing.

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Sheathing Application

1. Apply tape shingle fashion starting at the bottom of the wall.

2. Lap vertical applications over the horizontal one below.

3. Lap horizontal applications over vertical ones below.

Application Procedure

General – The substrate must be clean, dry, structurally sound and free of efflorescence, oil, grease, form release agents and curing compounds. Painted surfaces are not acceptable and the paint must be removed.

Job Conditions – Air and substrate temperature for application of WeatherStop Tapes must be 40°F (5°C) or higher.

Temporary Protection – Do not expose to direct sunlight for more than six weeks after installation.

Surface Preparation – Surface temperature must be above 40°F (5°C). Surface must be Cured, clean, dry, structurally sound and free of efflorescence, oil, grease, form release agents, and curing compounds. On previously painted surfaces, all loose, peeling and chalking paint must be removed.

Approved Substrates

  • Exterior gypsum sheathing (ASTM C79)
  • Dens Glass Gold®
  • GlasRoc®
  • FiberBond®
  • Durock®
  • PermaBase®
  • Concrete
  • Brick
  • Masonry
  • Metal Lath
  • Others approved in writing

Priming – Prime all surfaces except metal with Primer 57 and allow to dry to the touch.

Installation – Plan the work from the bottom up in a shingle-fashion installation. Size the piece of flashing so that it is easy to handle. Start by removing about 12 inches (305 mm) of the release paper and placing it over the area being sealed. Firmly press WeatherStop Flashing Tape into place, rolling out any bubbles and smoothing it into the surface. Continue pulling off the release paper and smoothing the tape into place.

Limitations – WeatherStop Flashing Tape is a vapor barrier. The dew point must be engineered if it is used as a continuous air/water barrier.

Information contained in this product data sheet conforms to the standard detail recommendations and specifications for the installation of Master Wall® Inc. products and is presented in good faith. Master Wall® Inc. assumes no liability, expressed or implied as to the architecture, engineering, or workmanship of any project. This information may be concurrent with, or superseded by other applicable documents, such as specifications and details. Contact Master Wall® Inc. for the most current product information.