Redi-Klad™ 1000° Pipe Insulation

Redi-Klad™ 1000° Pipe Insulation

Knauf Insulation Earthwool® Redi-Klad® 1000° Pipe Insulation is a multi-purpose, molded, heavy-density, one-piece glass mineral wool insulation bonded with ECOSE® Technology. Earthwool Redi-Klad comes with factory applied 5-ply weather and abuse resistant jacketing with self-sealing lap. Earthwool Redi-Klad is designed for indoor or outdoor installation on mechanical piping systems with operating temperatures ranging from 0°F to 1000°F (-18°C to 538°C). Properly installed, Redi-Klad jacket provides a zero permeability rating. Earthwool® Redi-Klad® is produced in convenient 3' lengths with a matching 4" butt strip furnished for each 3' section. The installed product offers a finished appearance comparable to embossed aluminum.

Earthwool® Insulation

Earthwool® Insulation is the new benchmark that stands apart for its genuine sustainability, unsurpassed performance and consistently high product quality.  To see Earthwool® Insulation in greater detail, visit our minisite here.

ECOSE® Technology

ECOSE Technology is a revolutionary binder chemistry that enhances the sustainability of our products. The “binder” is the bond that holds our glass mineral wool product together and gives the product its shape and brown color. ECOSE Technology is a plant-based, sustainable chemistry that replaces the phenol/formaldehyde (PF) binder traditionally used in glass mineral wool products. Products using ECOSE technology are formaldehyde-free and have reduced global warming potential when compared to our products of the past.


Knauf Insulation Earthwool® Redi-Klad® 1000° Pipe Insulation is designed for indoor and outdoor installation on industrial and commercial mechanical systems piping. Typical applications include, but are not limited to steam, condensate, process, chilled, and domestic water piping for new or retro-fit power generation, petrochemical, pulp and paper, institutional, and educational construction projects, operating at temperatures from 0°F to (-18°C) to 1000°F (538°C).

Features & Benefits

  • Offers excellent resistance to heat loss or gain, which saves energy and lowers operating costs
  • A low thermal conductivity of .23 at 75°F (24°C mean temperature)
  • Available with a self-closure tape, which eliminates need for banding, screws and caulk
  • Lightweight and easy to handle 
  • Low maintenance costs
  • No off-site fabrication required
  • Safe installation
  • Fast, easy installation reduces installed costs versus standard aluminum jacketing systems
  • Properly installed, Redi-Klad® jacket provides a zero perm vapor barrier


  • Carbon negative: Knauf insulation products used for thermal insulating purposes recover the energy that it took to make them in just hours or a few days, depending on the application. Once installed, the product continues to save energy and reduce carbon generation as long as it is in place.
  • Earthwool® glass mineral wool insulation contains three key ingredients:
  • Sand, one of the world’s most abundant resources
    • A minimum of 50% recycled glass content and UL Environment verification every 6 months
    • ECOSE® Technology which reduces binder embodied energy by up to 70%
    • It reduces its Global Warming Potential (GWP) by approximately 4%, a significant reduction in our carbon footprint

Specification Compliance

Glass Mineral Wool Pipe Insulation

In U.S.:

  • ASTM C 547; Type I, Type IV
  • ASTM C 585
  • ASTM C 795
  • HH-I-558C; Form D, Type III, Class 12; Class 13 (to 1000°F, 538°C): replaced by ASTM C 592
  • NFPA 90A and 90B
  • ASTM C 795
  • MIL-PRF-22344E (except pH requirements)
  • MIL-I-24244D
  • NRC 1.36 (Certification needs to be specified at time of order)

Venture Clad Jacket and Tape

In U.S.:

  • MEA 447-06-M (City of New York Department of Buildings)

Indoor Air Quality

  • UL Enivronment validated to be formaldehyde free
  • Tested and certified to meet all requirements of EUCEB

Technical Data

Glass Mineral Wool Pipe Insulation

Surface Burning Characteristics

  • Does not exceed 25 Flame Spread, 50 Smoke Developed when tested in accordance with ASTM E 84, CAN/ULC S102-M88, NFPA 90A and 90B, NFPA 255 and UL 723

Temperature Range

  • Pipe operating temperatures from 0°F to 1000°F (-18°C to 538°C) at a recommend maximum thickness of 6"

Resists Microbial Growth (ASTM C 1338, G21)

  • Does not promote microbial growth.

Corrosiveness (ASTM C 665)

  • Does not accelerate corrosion on steel, copper or aluminum

Corrosion (ASTM C 1617)

  • Corrosion rate in mils/yr will not exceed that of the 5 ppm chloride solution.

Water Vapor Sorption (ASTM C 1104)

  • Less than 0.2% by volume.

Linear Shrinkage (ASTM C 356)

  • Negligible.

Technical Data

Venture Clad Jacket and Tape

Surface Burning Characteristics

  • UL/ULC listed.
  • Does not exceed 25 Flame Spread, 50 Smoke Developed when tested in accordance with UL 723.

Surface Temperature Range

  • Maximum temperature continuous use 300°F (149°C).
  • Application temperature -10°F to 300°F (-23°C to 149°C).

Water Vapor Permeability (ASTM E 96-05)

  • Zero-perm.

Puncture Resistance (ASTM D 1000)

  • 35.4 kg, 189.3 N.

Tear Strength (ASTM D 624)

  • 4.3 lb., 19.4 N.


  • 14.5 mils (0.0145")

Tensile (PSTC-31)

  • 68 lb./inch width, 306 N (31 kg)/25 mm


  • Four convenient carton sizes for easy ordering, inventory tracking and storage
  • Reinforced carton handles for strength and easy lifting
  • Bar-coded cartons for accurate shipments and tracking
  • Color-coded labels


Hot Pipe

  • May be installed while the system is in operation, at all temperatures up to 1000°F (538°C).
  • Knauf Insulation recommends, for insulation thicknesses greater than 6" (152 mm), the temperature must be increased from 500°F (260°C) to maximum temperature at a rate not exceeding 100°F (56°C) per hour
  • During initial heat-up to operating temperatures above 350°F (177°C), a slight odor and some smoke may be given off as a portion of the bonding material used in the insulation begins to undergo a controlled decomposition
  • If natural convection is not adequate in confined areas, forced ventilation should be provided in order to protect against any harmful fumes and vapors that might be generated during initial start-up
  • Care must also be taken when using sealants, solvents or flammable adhesive during installation.
  • A maximum of 6" (152 mm) wall thickness is recommended

Cold Pipe

  • Redi-Klad® jacket acts as a continuous vapor barrier on piping operating below ambient temperatures
  • Seal all joints, surfaces, seams and fittings to prevent condensation
  • Exposed ends of insulation shall be sealed with vapor barrier mastic installed per the mastic manufacturer’s instructions
  • Vapor seals at the butt joint shall be applied at 12' to 21' intervals; at the Engineer's discretion on straight piping and at each fitting to isolate any water incursion
  • On chilled water systems operating in high humidity conditions, it is recommended that the same guidelines be followed as listed above for below freezing applications
  • Exterior hanger supports are recommended


  • Keep adhesive and contact surfaces free from dirt and water, and seal immediately once adhesive is exposed Earthwool® Redi-Klad® 1000° Pipe Insulation should be installed in dry conditions with no moisture present
  • Apply when ambient and insulation surface temperatures are between 0°F and 130°F (-18°C and 54°C)
  • If stored below 0°F or above 130°F, allow insulation cartons to stand within recommended temperature range for 24 hours prior to application
  • Do not store product below -20°F (-29°C) or above 150°F (66°C)
  • When using Knauf Insulation’s Redi-Klad® closure system, make sure the longitudinal and circumferential joints are properly sealed by rubbing the closure firmly with a squeegee
  • When using Knauf Earthwool® Redi-Klad® 1000° Pipe Insulation, the surface temperature of the insulation should be between -20°F and 150°F (-29°C and 66°C) during the life of the insulation

Fittings and Hangers

  • Use metal or PVC fitting covers. For below ambient piping systems, caution should be taken to prevent punctures, tears, or rips in Redi-Klad® vapor barrier. Additionally, all fitting insulation surfaces must have independent, field applied vapor barriers. Priorto installing fitting insulation, all exposed ends of pipe insulation sections must be vapor sealed
  • Fittings should be insulated to same thickness as the adjoining insulation
  • Apply fittings per manufacturer’s instructions
  • When required by specification, a hard insert of sufficient length should be used to avoid compression of the insulation

Additional Precautions

  • Glass mineral wool may cause temporary skin irritation. Wear longsleeved, loose-fitting clothing, head covering, gloves and eye protection when handling and applying material
  • Wash with soap and warm water after handling
  • Wash work clothes separately and rinse washer
  • Use a disposable mask/respirator designed for nuisance-type dusts where sensitivity to dust and airborne particles may cause irritation to the nose or throat

Application Guidelines


  • Protect insulation from water damage or other abuse, welding sparks and open flame
  • Cartons are not designed for outside storage


  • Apply only on clean, dry surfaces
  • Pipe or vessel should be tested and released before insulation is applied

General Guidelines

  • All sections should be firmly butted
  • Seal circumferential joint with a minimum 4" (102 mm) wide butt strip
  • All piping should have continuous insulation
  • Position longitudinal lap at top to minimize dirt and moisture accumulation
  • Do not expose pipe insulation to excessive vibration or physical abuse
  • Insulation thickness must be adequate to assure 300°F (149°C) exterior surface temperature maximum

Recommended Thicknesses ASHRAE 90.1-2013

The minimum thicknesses are based on ASHRAE 90.1-2013 standards and do not necessarily represent the Economic Thickness of Insulation or the thickness required for proper condensation control. Rather, they serve as minimum recommendations for commercial applications. For recommended Economic Thickness, install according to Knauf Insulation or NAIMA 3E Plus programs or as specified.

Glass Mineral Wool and Mold

Glass mineral wool insulation will not sustain mold growth. However, mold can grow on almost any material when it becomes wet and contaminated. Carefully inspect any insulation that has been exposed to water. If it shows any sign of mold it must be discarded. If the material is wet but shows no evidence of mold, it should be dried rapidly and thoroughly. If it shows signs of facing degradation from wetting, it should be replaced.


The chemical and physical properties of Knauf Insulation Earthwool® Redi-Klad® 1000° Pipe Insulation with ECOSE® Technology represent typical average values determined in accordance with accepted test methods. The data is subject to normal manufacturing variations. The data is supplied as a technical service and is subject to change without notice. References to numerical flame spread ratings are not intended to reflect hazards presented by these or any other materials under actual fire conditions. 

Check with your Knauf Insulation sales representative to assure information is current.