Childers® CP-129 Adhesive

1 of 37 products in this brand
Childers® CP-129 Adhesive is a high-performance adhesive formulated for duct liner and insulation applications. It is known for its aggressive and fast-tacking properties, making it ideal for use with brush or air-atomized spray equipment. When applied via spray, it creates a spatter or web-like pattern, enabling an efficient and high coverage rate during application.

Product Type: Adhesive

Application Area: AC Ducts, Duct Liner, Furnace

Features: Brushable, Cost Effective, Fire-Resistant, Good Bonding Strength, High Coverage, No Clogging

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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
  • Equipment is low cost & operates with minimum air
  • Sprays easily
  • Little or no clogging of equipment
  • High production rates and excellent coverage
  • Long bonding time
  • Fire-resistive dry film
  • Very economical
  • Bonds duct liner and duct wrap
  • Good brushability

Applications & Uses

Application Area
  • CP-129 adhesive is used to bond lightweight fibrous insulation materials (up to 3 lbs./cu. ft.) to duct work and in equipment such as air conditioners and furnaces.
  • CP-129 adhesive is also used to bond porous and lightweight materials such as cork, cardboard and paper.
Suggested Specifications

Duct Liner Insulation

  • All fibrous glass (or other) insulation shall be applied with CP- 129 adhesive.
  • The adhesive shall be evenly applied to the ductwork at a maximum coverage of 400 square feet per gallon (9.8 m2 /liter).

Notes to Specifying Engineer

  • There are considerable forces placed on the lining materials in lined ducts.
  • Since an adhesive has no better strength than the materials it is adhering and since most insulations such as fibrous glass tend to delaminate, it is usually desirable to also specify the use of welded pins or adhered clips and retaining washers as mechanical adjuncts to the adhesive.
  • These fasteners are usually spaced on 18-24” (45-60 cm) centers.
Preparation and Application Information

Use of Material 

  • CP-129 adhesive should be applied between 4°C and 38°C.
  • Lower temperatures will cause a temporary increase in viscosity and difficulty in spraying may be experienced.
  • Do not apply or use near open fire or flames and do not use near welding operations or where sparking is possible.
  • Keep the container tightly closed when not in use. Use only in well ventilated areas.
  • Avoid prolonged breathing of vapors or repeated contact with skin.

The Condition of the Surface to Be Coated 

  • CP-129 adhesive may be applied over almost any type of substrate.
  • It is advisable that metal surfaces be as free as possible from oil or grease.
  • No primer is required over galvanized steel or aluminum to gain maximum adhesion.
  • Do not apply over wet or damp surfaces, as the adhesion will be affected.
  • Stir well, Do Not Thin.
  • The solvents in this adhesive might attack certain plastic foams, films or laminates.
  • The user should determine by prior test that this adhesive may be used with specific materials and under the application conditions which exist.


  • CP-129 adhesive may be applied by brush or with spray equipment available from many different manufacturers.
  • The types and model numbers of units suggested herein do not imply endorsement of any one unit, nor assurance of their applicability under the user’s requirements.
  • When spraying, trigger the spray gun at the end of each pass.
  • This helps eliminate clogging or adhesive buildup at tip.
  • Hold gun perpendicular to and about 12” (30 cm) away from the surface to be sprayed.
  • A web pattern gives the most effective bond.
  • This is not a paint – do not try to completely cover the surface.
  • Place the insulation into the adhesive while it is still wet – do not allow it to dry too much or an insufficient bond will result.
  • If the adhesive is prematurely drying or excessive overspray occurs, the atomizing pressure is too high and should be cut back to a level that still achieves the desired spray pattern.
Spray Equipment Suggestions
Spray Gun Model 2001SS JGA-510
Fluid Nozzle 66SS E
Air Cap 66SD 777
Fluid Pressure Required 25 psi
Atomizing Air 40 – 50 psi

1:1 or 2:1 air pump or pressure pot

Hints for Spray Success

  • All material hoses should be nylon or PVC lined. Packings and glands in contact with the adhesive should be made of Teflon®.


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Wet Weight6.2lbs.ASTM D1475
Average Non-Volatile (by Weight)30.0% ASTM D2369
Average Non-Volatile (by Volume)23.0% ASTM D2369
Bonding Time Range1 - 15Minutes-
Coverage Range (For insulation attachment, applied on metal) 400sq. ft./U.S. gal
Application Properties
ValueUnitsTest Method / Conditions
Application Temperature Range4 - 38°C-
Service Temperature Limits (to which dry film is subjected)-20 to 200°F
Flame Characteristics
ValueUnitsTest Method / Conditions
Flame Spread ¹10
Smoke Developed ¹25

¹ - Applied to Inorganic Reinforced Cement Board. Tested as applied at a coverage rate of 200 ft2 /gal. Flash point of liquid adhesive (closed cup) less than 30°F.

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories
Quality Standards
  • CP-129 meets the requirements of NFPA Standard 90A & 90B.
  • Meets ASTM C916, Type IV.
  • This product has been tested according to ASTM E84 (Surface Burning Characteristics of Building Materials).

Storage & Handling

Shelf Life
12 months
Storage Condition
  • CP-129 adhesive should be stored and applied between 4°C and 38°C.
  • Higher temperatures will shorten the shelf life of this product. CP-129 adhesive is manufactured with volatile, flammable solvents.