Product Description

Dymeric® 240FC is a gun grade, multi-component, chemically curing, polyurethane sealant that includes a tintable base, curative packet, and a choice of 70 standard colors. A Limestone Pretinted version is available.

Basic Uses

Dymeric 240FC applications range from pre-cast tilt-up concrete, masonry, and exterior insulating and finishing systems (EIFS), to metal curtain walls, and perimeter joints around doors and windows. It can also be used in certain water immersion applications.

Features and Benefits

Dymeric 240FC is an all around general-purpose sealant that provides flexible, long life and durable waterproofing for both new construction and restoration projects in a fast curing formulation. Dymeric 240FC is formulated to be a lightweight material designed for extremely easy mixing, even in cold temperatures. Dymeric 240FC is a solvent-free product that is compliant with all existing VOC regulations. Please contact your local Sales Representative or Tremco’s Technical Service Department for information regarding immersed conditions.


Dymeric 240FC is available as a base and curative that can be tinted to your choice of 70 standard colors, or we can match a special color for you. A color pak is not required for the pretint version.


1.5 ga (5.7 L) and 3 gal (11.4 L) kits with pre-measured pouches of curing agent. Pretint in 1.5 gallons (5.7 L) only. 

Coverage Rates

308 feet of joint per gal for a 1/4” x 1/4” joint. For specific

coverage rates that include joint size, and usage efficiencies, visit our website usage calculator at

Fire-Rated Systems

FF-D-1061, FF-S-1030, FW-D-1057, FW-S-1014, HW-D-1052, HW-S-1011, WW-D-1052, WW-S-1033

Applicable Standards

Dymeric 240FC meets or exceeds the requirements of the following specifications:

• ASTM C920-02 Type M, Grade NS, Class 50, Use I (Class 2), T, NT, M, A and O (granite)

• U.S. Federal Specification TT-S-00227E Class A, Type II • CAN/CGSB 19.24-M90 Class B, Type II

Joint Design

Dymeric 240FC may be used in any vertical or horizontal joint designed in accordance with accepted architectural/engineering practices. Joint width should be 4 times anticipated movement, but not less than 1/4” (6.4 mm).

Joint Backing

Closed cell or reticulated polyethylene backer rod is recommended as joint backing to control sealant depth and
to ensure intimate contact of sealant with joint walls when tooling. Where depth of joint will prevent the use of backer rod, an adhesive backed polyethylene tape (bond breaker tape) should be used to prevent three-sided adhesion. All backing should be dry at time of sealant application.

Pot Life (after curative packet added)

3.0-3.5 hr at 77 °F (25 °C) 1.5-2.0 hr at 95 °F (35 °C) 1.0-1.5 hr at 120 °F (48.9 °C)