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- SECTION 15819
-
- AIR DUCT SEALANTS
-
- NOTE ** This section is based on air duct sealants produced
- by RCD Corporation, which is located at:
- NOTE **
- NOTE ** 2850 Dillard Road
- NOTE ** Eustis, FL 32726
- NOTE ** Tel: (352) 589-0099 or (800) 854-7494
- NOTE ** Fax: (352) 589-0863
- NOTE **
- NOTE ** Products include air duct sealants for permanently
- sealing fabricated joints and seams of HVAC air
- ducts and thermal insulation.
- NOTE **
- NOTE ** SECTION 15819 - AIR DUCT SEALANTS, Copyright 1998,
- The Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
-
- A. Air duct sealants for permanently sealing fabricated
- joints and seams of HVAC air ducts and thermal
- insulation.
- NOTE ** Delete paragraph below if not required.
-
- B. Reinforcing membrane for sealants.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 15080 - Mechanical Insulation.
-
- B. Section 15700 - Heating, Ventilating, and Air
- Conditioning Equipment.
-
- C. Section 15810 - Ducts.
-
- D. Section 15820 - Duct Accessories.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section.
-
- A. ASTM D 1668 - Glass Fabrics (Woven and Treated) for
- Roofing and Waterproofing.
-
- B. ASTM E 84 - Surface Burning Characteristics of Building
- Materials.
-
- C. ASTM E 96 - Water Vapor Transmission of Materials.
-
- D. UL 181 - Factory Made Air Ducts and Air Connectors.
-
- E. UL 181A - Closure Systems for Use with Rigid Air Ducts
- and Air Connectors.
-
- F. UL 181B - Closure Systems for Use with Flexible Air Ducts
- and Air Connectors.
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's product data, including
- physical properties and application instructions.
-
- 1.5 DELIVERY, STORAGE, AND HANDLING
-
- A. Deliver materials to site in manufacturer's original,
- unopened containers and packaging, with labels clearly
- indicating manufacturer and material.
-
- B. Storage:
- 1. Store materials in accordance with manufacturer's
- instructions.
- 2. Storage Temperature: 40 to 100 degrees F (4 to 38
- degrees C).
- 3. Protect from freezing.
-
- 1.6 ENVIRONMENTAL REQUIREMENTS
-
- A. Do not apply below 35 degree F (2 degrees C) or above 120
- degrees F (49 degrees C).
-
- B. Avoid high humidity which will retard drying.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Acceptable Manufacturer: RCD Corporation; 2850 Dillard
- Road; Eustis, FL 32726; ASD. Tel: (352) 589-0099 or (800)
- 854-7494; Fax: (352) 589-0863.
- NOTE ** Delete one of the two following paragraphs;
- coordinate with Division 1 requirements.
-
- B. Requests for substitutions will be considered in
- accordance with provisions of Section 01600.
-
- C. Substitutions: Not permitted.
-
- D. Supply all products specified in this section from a
- single manufacturer.
-
- 2.2 AIR DUCT SEALANTS
- NOTE ** Consult manufacturer to determine appropriate air
- duct sealant for this project. Select from the
- three paragraphs below.
-
- A. Low to High Velocity Air Duct Sealant: RCD "#6 Mastic"
- non-toxic, water-based, fiber-reinforced adhesive-
- sealant; for permanently sealing fabricated joints and
- seams of sheet metal air ducts, UL 181 listed rigid
- fiberglass air ducts, UL 181 listed flexible air ducts,
- and thermal insulation; for repairing damaged and leaking
- air ducts; for sealing conditioned spaces from air
- infiltration.
- 1. Type: Elastomeric terpolymer emulsion.
- 2. Applied Research Laboratories Listed: UL 181
- 3. Underwriters Laboratories Listed: UL 181A-M and UL
- 181B-M.
- 4. Solids by Weight: 67 percent, plus or minus 2
- percent.
- 5. Weight per Gallon: 10.5 pounds, plus or minus 0.20
- pounds (4.76 kg plus or minus 0.09 kg).
- 6. Wet Film Coverage: 100 linear feet per gallon at
- 1/16 inch by 3 inches wide (8.05 m/L at 1.58 x 75
- mm).
- 7. Consistency: Thixotropic, non-sagging.
- 8. Adhesive Cure: 72 hours at 50 percent humidity and
- 70 degrees F (21 degrees C).
- 9. Service Temperature Limits: Minus 10 degrees to 200
- degrees F (minus 23 to 93 degrees C).
- 10. Flame Spread: Not greater than 5 in accordance with
- ASTM E 84.
- 11. Smoke Developed: Not greater than 0 in accordance
- with ASTM E 84.
-
- B. Low to High Velocity Air Duct Sealant: RCD "#8 Mastic"
- non-toxic, water-based, adhesive-sealant; for permanently
- sealing fabricated joints and seams of sheet metal air
- ducts, UL 181 listed rigid fiberglass air ducts, UL 181
- listed flexible air ducts, and thermal insulation; for
- repairing damaged and leaking air ducts; for sealing
- conditioned spaces from air infiltration.
- 1. Type: Elastomeric terpolymer emulsion.
- 2. Underwriters Laboratories Listed: UL 181A-M and UL
- 181B-M.
- 3. Solids by Weight: 74 percent, plus or minus 2
- percent.
- 4. Weight per Gallon: 12.1 pounds, plus or minus 0.20
- pounds (5.48 kg plus or minus 0.09 kg).
- 5. Wet Film Coverage: 100 linear feet per gallon at
- 1/16 inch by 3 inches wide (8.05 m/L at 1.58 x 75
- mm).
- 6. Consistency: Thixotropic, non-sagging.
- 7. Adhesive Cure: 72 hours at 50 percent humidity and
- 70 degrees F (21 degrees C).
- 8. Service Temperature Limits: Minus 10 degrees to 200
- degrees F (minus 23 to 93 degrees C).
- 9. Water Vapor Transmission: Not greater than 0.2173
- perms per inch (8.555 perms/m) in accordance with
- ASTM E 96.
- 10. Flame Spread: Not greater than 5 in accordance with
- ASTM E 84.
- 11. Smoke Developed: Not greater than 0 in accordance
- with ASTM E 84.
-
- C. Low to High Velocity Air Duct Sealant: RCD "#9 Mastic"
- non-toxic, water-based, fiber-reinforced adhesive-
- sealant; for permanently sealing fabricated joints and
- seams of sheet metal air ducts, UL 181 listed rigid
- fiberglass air ducts, UL 181 listed flexible air ducts,
- and thermal insulation; for repairing damaged and leaking
- air ducts; for sealing conditioned spaces from air
- infiltration.
- 1. Type: Elastomeric terpolymer emulsion.
- 2. Underwriters Laboratories Listed: UL-181A-M and UL-
- 181B-M.
- 3. Solids by Weight: 70 percent, plus or minus 2
- percent.
- 4. Weight per Gallon: 12.0 pounds, plus or minus 0.20
- pounds (5.44 kg plus or minus 0.09 kg).
- 5. Wet Film Coverage: 100 linear feet per gallon at
- 1/16 inch by 3 inches wide (8.05 m/L at 1.58 x 75
- mm).
- 6. Consistency: Thixotropic, non-sagging.
- 7. Adhesive Cure: 72 hours at 50 percent humidity and
- 70 degrees F (21 degrees C).
- 8. Service Temperature Limits: Zero degrees to 200
- degrees F (minus 18 to 93 degrees C).
- 9. Water Vapor Transmission: Not greater than 0.6812
- perms per inch (26.819 perms/m) in accordance with
- ASTM E 96.
- 10. Flame Spread: Not greater than 5.8 in accordance
- with ASTM E 84.
- 11. Smoke Developed: Not greater than 14.3 in accordance
- with ASTM E 84.
- NOTE ** Delete paragraph below if not required.
-
- D. Reinforcing Membrane: RCD "Glasscoat" inorganic woven
- fiberglass reinforcing membrane; conforming to irregular
- surfaces for sealing and coating thermal insulation, air
- ducts, return air plenums, equipment, vessels, pipes, and
- fittings.
- 1. ASTM D 1668, Type III.
- 2. Nominal Dry Weight: 1.2 to 2.0 ounces per square
- yard (40.689 to 67.815 g/sq. m).
- 3. Saturated Weight: 1.6 to 2.6 ounces per square yard
- (54.252 to 88.160 g/sq. m).
- 4. Nominal Thread Count: 10 by 20.
- 5. Breaking Strength, Saturated: 75 warp, 75 fill
- minimum.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
-
- A. Examine surfaces to receive air duct sealants.
-
- B. Notify Architect of conditions that would adversely
- affect application of sealants. Do not proceed with
- application until unsatisfactory conditions are
- corrected.
-
- 3.2 SURFACE PREPARATION
-
- A. Prepare surfaces in accordance with manufacturer's
- instructions.
-
- B. Remove water, dirt, oil, grease, and corrosion from
- surfaces to receive air duct sealants.
-
- 3.3 APPLICATION
-
- A. Apply air duct sealants in accordance with manufacturer's
- instructions.
-
- B. Apply to sheet metal air ducts, UL 181 listed rigid
- fiberglass air ducts, UL 181 listed flexible air ducts,
- thermal insulation, and other surfaces where indicated.
-
- C. Do not thin or mix.
-
- D. Apply tack coat at rate of 2 gallons per 100 square feet
- (0.815 L/sq. m).
- NOTE ** Delete paragraph below if reinforcing membrane is
- not required.
-
- E. Embed reinforcing membrane into tack coat.
-
- F. Apply finish coat at rate of 2 gallons per 100 square
- feet (0.815 L/sq. m).
-
- G. Allow drying time as follows:
- 1. Minimum 6 hours when used outdoors if wet weather is
- imminent.
- 2. Minimum 24 hours before using air duct system.
- 3. Additional time as required by air temperature and
- humidity conditions.
-
-
- END OF SECTION
-