What is ArmaFlex used for
Christopher Lucas
Published Feb 17, 2026
Select closed-cell foam insulation: ArmaFlex is the closed-cell elastomeric insulation invented to prevent condensation, moisture intrusion and loss of thermal efficiency. Use the Armacell ArmWin™ program to calculate the insulation thickness needed to maintain the surface temperature above the dew-point temperature.
What material is ArmaFlex?
AP ArmaFlex®, the original elastomeric closed-cell foam insulation, has been the chosen fiber-free mechanical insulation since its introduction in 1954. Superior condensation control and consistent thermal performance have made ArmaFlex the preferred insulating material for pipes and ductwork.
Is ArmaFlex insulation waterproof?
Armaflex Tuffcoat Class O 1m Underground Waterproof Pipe Insulation-42mm-19mm-Wall – 42mm Pipe Insulation – Insulation by Pipe Size – Pipe Insulation.
Is ArmaFlex rubber?
ArmaFlex Class O is a highly flexible, closed-cell Nitrile rubber Insulation material with high water vapor diffusion resistance and low thermal conductivity. It prevents condensation, reduces energy losses and protects against frost on pipes, air ducts, and vessels.Is armaflex closed cell?
AP ArmaFlex Tubes AP Armaflex, the world’s most recognized brand of closed-cell foam insulation, provides superior protection against thermal losses, condensation and moisture accumulation that leads to mold. It is the ideal choice for insulating mechanical piping systems.
Where is armaflex made?
Armacell International S.A. Armacell is a manufacturer and supplier of industrial foams and flexible insulation materials, based in Luxembourg. It has over 3,135 employees and 25 production plants in 17 countries.
Who makes armaflex?
Armacell is the manufacturer of the industry-leading range of Armaflex Insulation Products.
Does armaflex absorb water?
Does ArmaFlex insulation need an additional vapor retarder? No, the nature of closed-cell foam is that it will not absorb or wick moisture. No vapor retarder is required on indoor applications.What type of insulation is armaflex?
AP Armaflex® Pipe Insulation is a closed cell, fiber-free elastomeric thermal insulation. It is manufactured without the use of CFC’s, HFC’s or HCFC’s. All AP Armaflex® products are made with Microban® antimicrobial product protection for added defense against mold on the insulation.
Can you paint ArmaFlex?ArmaFlex WB Finish may be tinted for indoor applications with selected pigment pastes recommended for shading or coloring latex paints at less than 4 ounces per gallon. When WB Finish is used for outdoor application, tinting is not recommended.
Article first time published onIs ArmaFlex combustible?
Many Armacell insulation products are rated at V0 and 5VA. Therefore, they are in the least flammable category in the UL 94 standard.
What temperature is ArmaFlex good for?
The recommended temperature usage range for AP Armaflex Sheet is -297°F to +220°F (-183°C to +105°C) according to method of application.
Is ArmaFlex insulation fire rated?
Sheet and Roll Insulation For applications requiring fire and smoke ratings of 25/50, AP ArmaFlex FS (Flame Spread)meets ASTM E 84 at 25/50 for 1-1/2” and 2” thicknesses.
Is ArmaFlex Tuffcoat?
ArmaFlex Tuffcoat is AF/ArmaFlex Class O tube and sheet pre-covered with a tough outer PVC layer for mechanical protection. Tuffcoat protects installations against impact and damage from UV, birds and rodents when used on outdoor pipework.
What is elastomeric foam?
Elastomeric insulation is a closed-cell foam insulation that provides moisture resistance and steady, long-term thermal performance. Closed cell elastomeric foam has strong water vapor permeability, eliminating the need for a vapor barrier to prevent moisture transfer.
What is elastomeric insulation?
Essentially, elastomeric foam insulation is a synthetic rubber composed of a closed-cell structure available in factory-made tubes, sheets, or rolls. The outside edge consists of a smooth surface or “skin” which serves as a built-in vapor retarder.
When was ArmaFlex invented?
It was in 1954, Armstrong World Industries Inc., engineers developed the first flexible closed-cell insulation product, known today as ArmaFlex.
What is ArmaFlex lagging?
Armaflex insulation is a flexible, closed-cell, elastomeric, nitrile rubber professional insulation system engineered to prevent condensation and effectively prevents energy loss.
What ArmaFlex 520 adhesive?
ArmaFlex® 520 Adhesive is an air-drying contact adhesive that is excellent for joining seams and butt joints of ArmaFlex pipe and sheet insulations for line temperatures up to 250°F (120°C). … ArmaFlex 520 Adhesive is the preferred contact adhesive for all ArmaFlex foam applications.
Is pipe insulation closed cell foam?
This flexible, closed-cell foam pipe insulation is designed to help protect pipes and keep them from freezing. The insulation can withstand temperatures between -70° to 220°F.
Where is armacell located?
Armacell LLC has five US manufacturing facilities located in Mebane, NC; Conover, NC; Dallas, GA; South Holland, IL and Spencer, WV. Armacell also operates a manufacturing plant in Pindamonhangaba, Brazil.
Is armaflex plenum rated?
AP Armaflex Insulation is acceptable in wall thicknesses through 1-1/2″ for use in air plenums. Conforms to NFPA 90A and NFPA 90B requirements.
What type of pipe insulation is best?
For many residential plumbing applications a PE pipe insulation product like Tubolit® and Tundra® is the perfect option. Economical and easy to install, PE foam insulation will prevent pipes from freezing and keep hot pipes hot and cold pipes cold.
Can armaflex be used outside?
The UV-resistant hT/Armaflex can be used for outdoor appli- cations without any additional UV-protection.
Can I paint pipe insulation?
You can paint foam pipe insulation, provided you use the right type of paint. Thermal barrier paint is well suited for the job because it holds up well to high temperatures. The paint has a plain white color, but most home improvement stores can tint it to a different color.
Is K Flex UV resistant?
The K-FLEX TITAN coated pipe insulation is a whole new level of durable. It’s tear resistant. UV resistant. You can push it, pull it, even yank it through walls.
Does ArmaFlex melt?
The product will not melt, drip or carry a progressive flame. HT Armaflex Insulation withstands incidental oil contact and performs on a broad range of metal pipes and tubing in refrigeration-hot gas piping; automotive (under hood), solar collectors and dual temperatures and low pressure steam lines.
Is armacell flammable?
The material has low viscosity for ease of application and quick drying characteristics. In its dry state, ArmaFlex 520 adhesive is not flammable.
What is flame spread rating of 25?
A numerical reference that measures how fast and far a flame spreads during a 10-minute test. Flame Spread Index of 25 or less; the best possible rating, awarded to fire-retardant building products, like concrete.
Is ArmaFlex an EPDM?
HT/ArmaFlex is an EPDM rubber insulation that meets the growing demand for a reliable and environmentally friendly flexible insulation material that can be used at higher temperatures for process industry and solar applications.
What is plenum rated insulation?
Plenum wrap is a blanket insulation that has a robust fire rating and is commonly used in plenum spaces. It is made from inorganic fibers that are encased in a scrim-reinforced foil, and it can withstand exposure to flames for 1-2 hours.