Protection for 3-sided concrete structures.

High Performance Water-Proofing Membrane for Concrete Structures

SealWrap is a high performance water-proofing membrane that offers versatile protection for 3-sided concrete structures, arches/spans and other concrete structures. It is a triple layered heavy duty water-proofing membrane. SealWrap is reinforced with an internal layer of woven polypropylene for puncture and tear resistance, and has an outside backing of impervious polyethylene.

SealWrap is an external wrap that meets the dimensional and performance of the ASTM C 877 Type III standards and is used to wrap and seal joints of concrete structures.

SealWrap is available in roll form in standard widths of 9”, 12” and 14”. Custom widths and roll lengths available upon request.

MarMac SealWrap meets or exceeds the material requirements of ASTM C 877 and ASTM C 990. Its used for sealing the joints of reinforced concrete pipe, box culverts, manholes, 3-sided concrete structures (including detention and burials vaults and tornado shelters), arches, spans and other below ground concrete structures. It is not appropriate, however, for use in expansion joints or on joints that move.

Sealing Capabilities:

  • Aggressive Tack and initial adhesion to all concrete surfaces.
  • Continuous adhesion at ground temperatures after application.
  • Puncture and Tear Resistant
  • Infiltration and Exfiltration Proof
  • Resistant to drying, oxidation, hardening
  • Primer not typically needed
  • Economical and Effective
  • Available in a range of widths and lengths

Tell us about your application and let our experts help find the best solution for your situation—and send you a free quote!

Also ask about our SealWrap Repair Kit.

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*All statements and technical information are based on tests and/or data which MarMac Manufacturing deems reliable, however, MarMac does not warrant or guarantee the accuracy or completeness of such information. The end-user of MarMac products has sole knowledge and control of factors and variables which can affect the performance of the product in the user’s intended application. As such, it is the user’s responsibility to conduct tests to determine the compatibility of the product with the design, structure, and materials of the user’s end product and the suitability of the product for the user’s method of application and intended use. The user assumes all risk and liability arising out of such use.