PAREX® WeatherDry Basecoat

Two (2) years, properly stored in original containers.

• Protect materials during transportation to avoid physical damage. Store in a cool, dry place protected from freezing, extreme heat and direct sun. Store at no less than 40°F (4°C).
• Do not stack pallets.

0 grams per liter less water and exempt solvents

To adhere expanded polystyrene insulation board to the following acceptable substrates:

• Parex WeatherSeal Spray and Roll On
• Expanded polystyrene insulation board (EPS) or Neopor® (GPS)
• Cement boards conforming with ASTM C1325 (Type A - exterior) including PB Cement Board
• Poured in place concrete/ concrete unit masonry
• ASTM C1177 type sheathings, including DensGlass™ or DensElement exterior sheathing (sheathing only)
• eXP™ sheathing
• GlasRoc® sheathing
• Securock™ glass-mat sheathing
• Weather Defense™ Platinum sheathing
• GreenGlass® sheathing
• Gypsum sheathing (ASTM C79/C1396)
• Exposure 1 Exterior Plywood wih 2 coats of Parex WeatherSeal Spray and Roll On

*Note: Not for use directly over wood-based sheathing, Parex WeatherSeal Spray and Roll On required over wood sheathing.

For Parex reinforcing mesh embedment as part of Parex wall systems and as a skim coat over masonry and concrete above grade substrates.

Typically, 8 to 10 hours. Protect from rain and from temperatures less than 40°F (4°C) for 24 hours after installation and until dry.

Adhesive
Notch Trowel: 160 ft² (14.8 m²)

Mesh Embedment
Parex 355 Mesh: 280 ft² (26 m²)
SikaWall Intermediate 12: 200 ft² (18.5 m²)
SikaWall  Hi-Impact 20 & Parex 355 Mesh: 120 ft² (11 m²)

Adhesive & Flexguard 4 Embedment:
120 ft² (11 m²)

* Coverage rates vary depending on porosity of substrates and application techniques.

In a clean container, mix the contents of the PAREX® WeatherDry Basecoat pail with a low speed drill and paddle mixer until thoroughly blended. Mix one-part (by weight) Portland cement with one-part base coat. Add Portland cement in small increments, thoroughly mixing to a homogeneous consistency after each additional increment. Allow base coat to set for 5-10 minutes, then remix/retemper before use. Small amount of
clean potable water can be added to adjust workability.

• Do not use a container which has contained or been cleaned with a petroleum-based product.
• Additives are not permitted.
• Close container when not in use.
• Clean tools with soap and water immediately after use. Dried material can only be removed mechanically.

ADHESIVE FOR NON-DRAINAGE EIFS

 
Notched trowel method: Apply base coat to entire surface of insulation board using a stainless steel trowel with 1/2” x 1/2” notches spaced 1/2” apart (13 mm x 13 mm x 13 mm) or 3/8” x 3/8” notches spaced 3/8” apart (10 mm x 10 mm x 10 mm).

ADHESIVE FOR PAREX DRAINAGE EIFS

 
Apply base coat to entire surface of insulation board using a stainless-steel trowel with 1/2”x 1/2” notches spaced 2” apart (13 mm x 13 mm x 50 mm). Ribbons of adhesive must be applied parallel to the 2’ dimension of the EPS insulation board to ensure they are vertical when the EPS insulation board is applied to the substrate. Immediately set board into place and apply pressure over entire surface of board to ensure positive uniform contact and high initial grab. Do not slide insulation board into place. 
Do not allow base coat to dry prior to appyling to back of EPS insulation. Allow application of EPS insulation board to dry (normally 8 to 10 hours) prior to application of Base Coat/Parex Reinforcing Mesh.

  
BASE COAT FOR REINFORCING MESH EMBEDMENT

 
Trowel apply base coat to the surface of the insulation board or approved substrate. Fully embed Parex/SikaWall® Reinforcing Mesh into wet base coat, ensure no mesh color is visible. Lap reinforcing mesh a minimum 2 ½” (64 mm) at edges and 8” (203 mm) around corners. Ensure reinforcing mesh is free of wrinkles. Allow reinforced base coat to dry hard (normally 8 to 10 hours) prior to application of Parex/Sika Finish or Primer.