Alkalinity and moisture-resistant pressure sensitive tape

Product description

KOVARA® MBX SEAM TAPE is a specially formulated, highly aggressive one-sided pressure-sensitive tape.

Product use

KOVARA® MBX SEAM TAPE is a 2.5 in. wide tape used to cover seams between cuts of KOVARA® MBX. It is also used to secure KOVARA® MBX seams in areas where the membrane has been spliced to fit around floor monuments, columns, or poles.

KOVARA® MBX SEAM TAPE can be used over concrete slabs with a maximum relative humidity of 99.5% and maximum pH of 12.


Prior to application of KOVARA® MBX SEAM TAPE, all slab RH testing, pre-installation requirements, concrete substrate preparation, application of KOVARA® DOUBLE-SIDED TAPE and laying of KOVARA® MBX (including removal of release film from KOVARA® DOUBLE-SIDED TAPE) should be completed in accordance with the KOVARA® MBX product page installation guidelines on gcpat.com. NEVER OVERLAP SEAMS as it will potentially telegraph through the finished flooring and NEVER USE COMRESSION METHOD at any seams.

Complete the installation by setting KOVARA® MBX SEAM TAPE across the top of all side seams and cross seams. Maintain adequate tension on the tape when setting to minimize bubbling and wrinkling. Roll the seams with a hand roller or 75-100 pound resilient roller.

When splicing KOVARA® MBX to fit around floor monuments, columns, or poles, tape with KOVARA® MBX SEAM TAPE to secure the seams. Complete by rolling all seams with a hand roller or 75-100 pound resilient roller.

Sweep the KOVARA® MBX membrane to remove any installation debris, dust or dirt that may have accumulated during the application. Complete the finished flooring installation in accordance with all manufacturer guidelines.


Roll Size 2.5 in. x 180 ft.
Roll Weight 1.0 lb
Packaging 12 rolls / carton

gcpat.com | North America Customer Service: 1 877-4AD-MIX1 (1 877-423-6491)

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

KOVARA is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 450, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6
This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.com. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2022-08-16