220 Emulsion Roof Coating / 220 Fibered Emulsion Dampproofing
220 Emulsion Dampproofing (brush or spray)
KARNAK #220 Fibered Emulsion Dampproofing is a general purpose coating, manufactured with refined asphalt, clay emulsifiers, and selected non-asbestos fibers. The dried film cures to a tough, flexible, durable finish and will resist variations in temperature and weather. KARNAK #220 Fibered Emulsion Dampproofing will not burn or support combustion in a liquid state. This is a low odor coating that resists the absorption of exterior moisture. KARNAK #220 Fibered Emulsion Dampproofing may be applied to slightly damp surfaces.
- 4-6 Gallons per 100sf**
- 16 mils per gallon per 100 sq ft. (Brush Trowel Grade)
- 0.25" x 0.25" = 75' per 30 oz. Cartridge (Caulking Tube)
This is intended as a general guideline only, coverage can vary based on many factors.
KARNAK #220 Fibered Emulsion Dampproofing is a vapor retarder used as a protective coating against dampness on the exterior face of interior walls in cavity wall construction and exterior surfaces of concrete, metal and wood above or below grade. It may also be applied to interior surfaces in the absence of hydrostatic pressure. The emulsion may be utilized as an adhesive for polystyrene insulation prior to backfilling.
Weight per Gallon: 9.2
Solids by Weight: 52% Nominal
Solids by Volume: 49% Nominal
Permeance: 0.5 perms
Cure Time: 24 to 48 hours @ 77°F and 50% Relative Humidity
Service Temp. (Cured Film): -5°F to 180°F.
Preparation & Application
Surface should be free of oil, grease, dirt, laitance and loose material. Dry surfaces may be dampened with water before application. Repair all cracks and holes with KARNAK #220 Fibered Emulsion Dampproofing and KARNAK #31 Fiberglass Membrane or KARNAK #34 Asphalt Saturated Cotton Fabric, before applying the surface coating.
KARNAK #220 Fibered Emulsion Dampproofing is easily applied by brush, roller or spray equipment. Apply KARNAK #220 Fibered Emulsion Dampproofing in one coat. If applying two coats, allow the first coat to dry. Coating should be continuous and free of pinholes and holidays. Cover all slots, joints and grooves and apply into all chases and corners.
A) Above-grade dampproofing (interior and exterior):
Apply one coat of KARNAK #220 Fibered Emulsion Dampproofing at a rate of 4 to 6 gallons per 100 sq. ft. If applying two coats, each coat should be 2 to 3 gallons per 100 sq. ft. (First coat must be allowed to dry prior to the application of the second coat).
B) Below-grade dampproofing (interior, exterior and cavity walls):
Apply one coat of KARNAK #220 Fibered Emulsion Dampproofing at a rate of 4 to 6 gallons per 100 sq. ft. If applying two coats, each coat should be 2 to 3 gallons per 100 sq. ft. (First coat must be allowed to dry prior to the application of the second coat.)
C) Fabric re-enforced dampproofing:
Apply one coat of KARNAK #220 Fibered Emulsion Dampproofing at a rate of 2 to 3 gallons per 100 sq.ft. Apply KARNAK #31 Fiber Glass Membrane or KARNAK #34 Asphalt Saturated Cotton Fabric over the wet coating, overlapping all edges. Smooth out all wrinkles, making sure there is no trapped air underneath the fabric. Proceed with second coat at a rate of 2 to 3 gallons per 100 sq. ft.
D) Polystyrene insulation adhesive:
KARNAK #220 Fibered Emulsion Dampproofing is a water-based asphalt emulsion that is 100% compatible with polystyrene insulation or protection board. As an adhesive, KARNAK #220 Fibered Emulsion Dampproofing should be applied in 4” diameter dabs directly to the insulation and immediately pressed into place.
Note: When more than two courses are required, wall ties may be necessary. Allow the film to cure for a minimum of 24 to 48 hours prior to backfilling. Care should be taken during backfilling not to puncture or damage the coating. A protection board is highly recommended and backfilling should take place within 7 days.
Apply at 4 to 6 gallons per 100 square feet. Spray application should be at the same rate.
Caution/Care of Tools
Do not apply when rain is imminent. Protect from freezing. Coating must be dried before exposure to water. Store in a heated room and keep container covered when not in use. Do not thin. Avoid prolonged contact with skin. Dispose of in an environmentally safe manner.
CARE OF TOOLS:
Tools and other equipment should be cleaned with soapy cool water immediately after use. Dried coating may be cleaned with mineral spirits. Take necessary precautions when handling combustible material.
Recognized by professional roofing contractors as the best quality product in the market.