Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Highlights
- In the wet state, CP-9 is non-flammable for worker safety.
- Being water-based, it contains no harmful solvents that will attack insulations or facings.
Applications & Uses
- Markets
- Application Method
- Suggested Specifications
Mastic Finish
- Over insulation shall be AK-Cryl™ CP-9 Weather Barrier Coating weather barrier coating.
- It shall be applied in two coats.
- For interior applications, a tack coat is to be applied at a rate of 2 gal. per 100 sq. ft. (0.8 l/m2 ).
- While the tack coat is still wet, a layer of CHIL-GLAS® #10 open weave glass fiber reinforcing mesh shall be embedded with all fabric seams overlapped a minimum of 2” (5.08 cm).
- A finish coat at a coverage of 2 gal. per 100 sq. ft. (0.8 l/m2 ) shall be applied, fully covering the glass fiber reinforcing mesh, so that the minimum dry film thickness is 1/32” (0.032”) (0.8 mm).
- For exterior applications, increase finish coat to 4 gal. per 100 sq. ft. (1.6 l/m2 ) for a dry film thickness of 0.048” (1.2 mm).
- There shall be no voids or holidays and the mastic shall be trowelled, sprayed or wet-brushed to a smooth even finish.
- All adjoining insulated or uninsulated surfaces must be completely waterproofed and flashed.
- To effectively seal those locations where the AK-Cryl™ CP-9 Weather Barrier Coating coating meets adjoining insulated or uninsulated surfaces, or dissimilar weather-proofing materials, CHIL-JOINT® CP-70 sealant shall be applied as the sealing/flashing material.
- CHIL-JOINT® CP-70 sealant shall be trowelled at 1/8” thickness a minimum of 1” in both directions back onto and over the complete joint interface of the AK- CRYLTM CP-9 coating and the adjoining surface.
- CHIL-GLAS® #10 glass fiber reinforcing mesh is recommended to provide thickness control and strength at the joint interface.
Notes to Specifying Engineer
- Open weave synthetic fabric may be substituted for open weave glass cloth without affecting the application. For large areas or areas subject to severe mechanical abuse, use CHIL- GLAS® #5 glass fiber reinforcing mesh. Do not use with canvas or other closed weave fabrics.
- The above specification is for weather proofing and protection of insulation in HOT SERVICE or for COLD or DUAL TEMPERATURE SERVICE where the insulation and/or the insulation system forms an adequate vapor barrier prior to the application of the AK-CRYLTM CP-9 coating.
- Preparation and Application Information
Use of Material
- AK-CRYLTM CP-9 weather barrier coating appears much heavier than it actually is.
- Do not thin this product – it is thixotropic.
- Keep from freezing.
- Best stored over long periods of time in a heated area.
- For spray application, AK-CRYLTM CP-9 coating must be kept at minimum 50°F (10°C) just prior to spraying to achieve optimum results.
Condition of Insulation to Be Coated
- AK-CRYLTM CP-9 is a “breather coating”, which means that it will allow reasonable amounts of water (in the form of vapor – a gas) to pass through it in a reasonable period of time.
- However, excessively wet insulation on equipment operating at elevated temperatures will cause excessive water vapor pressure, and therefore blistering of the finish.
- Make certain the insulation is dry prior to the application of any coating.
- To obtain proper bonding, dusty surfaces shall first be primed with Chil-Seal® CP-52 diluted 50% with water.
- When applying AK- CRYLTM CP-9 coating over hygroscopic alkaline cements, first prime the surface of the cement with Chil-Seal® CP-52 diluted 50% with water and allow to dry completely before applying the finish coat.
- The presence of moisture in systems operating in cold service can completely destroy the effectiveness of not only the finish, but the entire insulation system. It must be dry.
- All exterior horizontal surfaces must be sloped at least 1/2 inch per foot (4 cm/m) to prevent ponding water.
Hand Application
- Large flat areas are best covered by application with trowel or stiff brush.
- Smaller, irregular surfaces such as fittings are more readily covered by brushing or ‘palming’.
- A smooth finish may be obtained by ‘wet-brushing’.
Spray Application
- AK-CRYLTM CP-9 weather barrier coating is readily applied with mastic pumps and airless spraying equipment.
- For best results, we suggest at a minimum the following airless spray equipment (see spray equipment dealer for available packages):
- Pump : Graco Checkmate pump, 40:1 on 100cc lower, NXT2200 motor mounted on ram plate, Graco S20C – 5 gallon cart mounted ram
- Compressor : Capable of 75 CFM and maintaining 100 PSIG
- Fluid Hose : High pressure capable of 4,000 PSI 1⁄2” inch up to 50 feet. 3/4 inch over 50 feet. Use 8’ x 1/2” I.D. hose for coupling to the gun. A higher ratio pump set-up will allow for longer hose runs up to 150’
- Gun : Graco mastic or textured coating spray guns with Reverse-A-Clean tips
- Tip Sizes : 635 to 655
- Most manufacturers of mastic spray equipment maintain nearby service facilities to aid in the solution of any technical problems that arise with their equipment.
Drying and Recoating
- A finish coat of AK-CRYLTM CP-9 should be applied immediately after the tack coat and membrane for maximum bond.
- Recommended Applications
- AK-Cryl™ CP-9 Weather Barrier Coating provides weatherproofing and mechanical protection of thermal insulation both outdoors and indoors in hot, cold and dual-temperature service.
- Because it is a ‘breather’ coating (vapors under pressure will pass through it), it should only be used over insulations in low temperature, or dual-temperature service when the insulations themselves are vapor retarders, or where a complete vapor retarder system is applied to the insulated surface either before or after the coating is applied.
- Industry experience has demonstrated that all weather barrier coatings may blister when applied over polystyrene board.
- This effect may be limited by the use of white colored coatings.
- AK-Cryl™ CP-9 Weather Barrier Coating is easy to apply by trowel, glove, brush or heavy- duty airless spray.
- Its thixotropic consistency yields a smooth, attractive finish even over rough substrates; it readily fills gaps and imperfections, and is normally applied with a glass fabric or synthetic reinforcing mesh.
Properties
- Color
- Physical Form
- Typical Properties
- Application Properties
- Flame Characteristics
- Note
¹ - Applied to ¼” Inorganic Reinforced Cement Board, Rate per Coat (sq. ft./gal.): 25, Number of Coats: 1
| Value | Units | Test Method / Conditions | |
| Average Wet Weight | 11.3 | lbs. | ASTM D1475 |
| Average Non-Volatile (by Volume) | 53.0 | % | ASTM D2369 |
| Average Non-Volatile (by Weight) | 65.0 | % | ASTM D2369 |
| Drying Time (Set to Touch) | 2 - 4 | Hours | — |
| Drying Time (Dry Through) | 24 - 36 | Hours | — |
| Coverage Range | 4 - 6 | U.S. gal./100 sq. ft. | — |
| Wet Flammability | 100.0 | °C | — |
| Value | Units | Test Method / Conditions | |
| Service Temperature Range | -40 to 83 | °C | — |
| Application Temperature Range | 4 - 38 | °C | — |
| Value | Units | Test Method / Conditions | |
| Surface Flame Spread¹ | 10.0 | — | ASTM E84 |
| Smoke Developed¹ | 45.0 | — | ASTM E84 |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Certifications
Certified :
- 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
- Collaborative for High Performance Schools EQ 7.1
- Meets NFPA Standard 90-A and 90-B 25/50 requirements.
Storage & Handling
- Shelf Life
- 12 months