Childers® CP-137 HF-AF Protective Coating

• CP-137 HF-AF coating is specially formulated with additional antimicrobials built into the coating to protect it from fungus or odor- producing bacteria on its surface.
• It is specially formulated with fungistatic agents to provide long-term resistance to mold or mildew growth on its surface.
• CP-137 HF-AF Protective Coating is used for adhering fabrics such as glass cloth, canvas and brattice cloth to many insulated surfaces such as round and rectangular duct work and equipment.
• It is also used for adhering the laps of these fabrics as well as some woven glass cloths on pipe insulation.
• CP-137 HF-AF is used as a protective coating over all of the above-mentioned fabrics and also finds use as a coating over plastic foam materials such as polystyrene.
• CP-137 HF-AF coating can be brushed on the joints and edges of duct liner insulation to help prevent air erosion of the glass fiber.
• CP-137 HF-AF is normally applied by brush; the bridging properties of this coating give a smooth finish even over relatively rough fabrics such as 8 oz. canvas and brattice cloth.
• May also be applied by airless spray.
• Meets NFPA Standard 90A & 90B 25/50 requirements.
• Meets the performance requirements of MIL-DTL-3316D, Class 1, Grade A. 
• CP-137 HF-AF coating is non-flammable in the wet state and fire resistive when dry. 
• It contains no solvents to attack insulations or facings. 
• The viscosity permits overhead and vertical applications that do not sag or run for additional ease of application. 
• The combination of properties afforded by this material gives it great versatility both as an adhesive and a coating. 
• The polymeric resins make this an adhesive of high bond strength. 
• The tough film is washable and is abrasion resistant.

Certified 

• MAS Certified Green®
• California Dept. of Public Health Standard Method v1.2
• VOC Emissions and Content requirements to contribute to LEED v4 EQ Credit: Low Emitting Materials – Paints and Coatings - Classroom
• Collaborative for High Performance Schools EQ 7.1

Pipe Insulation, Duct Insulation and Equipment

• All insulation finished with canvas (or other fabric finishes) shall be bonded with and have their laps adhered with CP-137 HF-AF coating.
• Apply only to clean, dry, oil-free surfaces.
• Apply a tack coat at 60 – 70 sq. ft. per gal. (1.5 – 1.7 m2/l).
• Immediately embed the selected lagging fabric into the wet coating.
• Smooth to avoid wrinkles and overlap seams by at least 2 inches (5 cm).
• Immediately apply a finish coat at 60 – 70 sq. ft. per gal. (1.5 – 1.7 m2 /l).
• The dry film thickness of this application will vary with the fabric selected.
• For air conditioning ducts, increase the coverage rate to 40 – 50 sq. ft. per gal. (1.0 – 1.2 m2/l) for each coat.

Notes to Specifying Engineer 

• The above suggested specification is for hot piping and equipment.
• It may be used for equipment operating below ambient temperatures where it is used as protection over foil faced insulations where the foil facing is taped and sealed and has a perm rating of <0.02 perms.
• If CP-137 HF-AF is to be top coated with anything other than an alkyd enamel conforming to DOD-E-24607 as specified in MIL-DTL-3316D, the user must confirm by his/her own tests that the products are compatible and that the final results are satisfactory.

Use of Material

• CP-137 HF-AF coating brushes easily despite its somewhat heavy appearance.
• It should be stored indoors and above freezing temperatures, and should not be applied below 40°F (4°C) nor above 100°F (38°C) for best results.
• Stir well, do not thin. 

The Condition of the Surface to Be Adhered or Coated 

• Certain surfaces which are dusty or porous such as calcium silicate or certain mineral fiber materials should first be primed with a light coat of CP-137 HF-AF adhesive diluted 50% with water for proper bonding.
• A coating or adhesive will adhere no better than the integrity of the surface to which it is applied.
• Not suggested for outdoor use.

Application 

• CP-137 HF-AF coating is extremely easy to apply by brush and the same procedure would be used as applying latex paints or similar brush-on coatings.
• Brushes or other tools should be kept in water and cleaned with hot, soapy water.
• CP-137 HF-AF coating may be sprayed with many types of equipment, including airless spray. Average viscosity range: 70,000 – 90,000 cps. For best results, we suggested the following airless spray

Hints for Success 

• CP-137 HF-AF coating is an excellent adhesive and also has good resistance to many chemicals and solvents. Spillage of this material should be cleaned immediately.