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(Please note that some colors might be special order, please call our help desk at 604-291-6101 for availability)

Product Description

Dymonic® is a high-performance, low-modulus, one-component, moisture-curing, polyurethane joint sealant.

Features and Benefits

Dymonic has a movement capability of ±25% of the original joint width, making it ideal for dynamically moving joints. Dymonic is available in 16 standard colors with several additional made-to-order colors.


Dymonic is specifically designed for sealing expansion and control joints in pre-cast tilt-up concrete, curtain wall joints and perimeter caulking around windows and doors. It can also be used for radon mitigation and bedding of mullions and frames. Dymonic exhibits tenacious adhesion, which will not diminish over product life.


Aluminum Stone, Anodized Aluminum, Beige, Black, Bronze, Buff, Hartford Green, Ivory, Light Bronze, Limestone, Off White, Precast White, Redwood Tan, Sandalwood, Gray Stone and White. 


10.1 oz (300 mL) cartridges, 20 oz. (600 mL) sausages, and 3 gallon (11.3 L) pails.

Coverage Rate

308 linear feet of joint per gallon for a 1/4” x 1/4” joint.
For specific coverage rates that include other joint sizes and usage efficiencies, visit our website usage calculator at www. tremcosealants.com.

Applicable Standards

Dymonic meets or exceeds the requirements of the following specifications:

ASTM C 920 Type S, Grade NS, Class 25, Use NT, M, A and O

U.S. Federal Specification TT-S-00230C Class A, Type II CAN/CGSB 19.13-M87
CFIA approved
ULC registered

Joint Design

Dymonic 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” (6.4mm).

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.