ARLINGTON, TX (FEBRUARY 6) – Demilec® Inc. is excited to announce their Heatlok® HFO High Lift and Heatlok HFO Pro are now radon gas resistant and can be used in place of a conventional polyurethane membrane barrier to mitigate risk of radon incursion.

Most modern building regulations require all foundation seams and breaches to be sealed to prevent the incursion of radon, an invisible, odorless, radioactive gas and America’s second most common source of lung cancer.

Heatlok HFO is sprayed on substrate before a basement floor is poured. A single pass can seal wall and floor seams, as well as the space around utility fittings such as floor drains, sewer lines, and electrical passages. Heatlok HFO is an ICC compliant air barrier, sealing gas as well as, or better than, industry standard products.

According to Demilec, Heatlok HFO is also 11 times more efficient than the conventional polyurethane membrane used to seal against radon. In late 2018, that thermal efficiency earned Heatlok HFO the Center for the Polyurethane Industry’s (CPI) coveted Innovation Award. Heatlok HFO High Lift is rated at an R-value of 7.5/inch, while Heatlok HFO Pro, designed for commercial and industrial applications, has an R-value of 7.4/inch.

Demilec also cites Heatlok HFO’s environmentally responsible composition as a benefit, as it is composed of 12.5% post-consumer waste. To date, Demilec has recycled more than 400 million plastic bottles to manufacture their spray foam products. Heatlok HFO generates no jobsite trash and is sprayed from reusable containers.

“Spraying Heatlok HFO under slab in basement serves two distinct purposes in the building envelope. It provides thermal insulation in an area which can be the coldest part of the home, and it helps prevent carcinogenic radon gas from entering the living space. All done without having to tape down and seal polyethylene sheeting,” says Douglas Brady, Vice President of Product Management and Technology.

About Demilec, Inc.:
Demilec, Inc., a subsidiary of Huntsman Corp., has been recognized as an industry leader in using innovative technology and advanced science to create a line of open-cell and closed-cell spray foam insulation and coatings for more than 33 years. Demilec focuses on meeting market demands for more energy-efficient products and serves a range of industries, including industrial, residential, commercial, agricultural, original equipment manufacturer, education, water, oil and gas, energy, military, and civil. For more information, visit

Forward-Looking Statements: 
Certain information in this release constitutes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements are based on management’s current beliefs and expectations. The forward-looking statements in this release are subject to uncertainty and changes in circumstances and involve risks and uncertainties that may affect the company’s operations, markets, products, services, prices and other factors as discussed under the caption “Risk Factors” in the Huntsman companies’ filings with the U.S. Securities and Exchange Commission. Significant risks and uncertainties may relate to, but are not limited to, volatile global economic conditions, cyclical and volatile product markets, disruptions in production at manufacturing facilities, reorganization or restructuring of Huntsman’s operations, including any delay of, or other negative developments affecting the ability to implement cost reductions and manufacturing optimization improvements in Huntsman businesses and realize anticipated cost savings, and other financial, economic, competitive, environmental, political, legal, regulatory and technological factors. The company assumes no obligation to provide revisions to any forward-looking statements should circumstances change, except as otherwise required by applicable laws.