Tough and Flexible Bituminous Board for the Protection of Self-Adhesive Membranes

Product Description

SERVIPAK® Flex is a tough but flexible protection board made of modified bituminous compound with a fiberglass core for dimensional stability. The boards are covered with polyethylene film on both sides. To aid identification and to avoid substitution, film is printed with SERVIPAK® Flex brand on one side. SERVIPAK® Flex is made to protect the waterproofing system during backfill operation.


Vertical Installation

  1. Start at bottom of wall and apply to height of first backfill layer.
  2. Wherever possible backfill and compact in layers to minimise risk of displacement of boards.
  3. To locate boards, apply nine 150 mm x 150 mm ‘patches’ (8 towards edges and 1 in the middle) of BITUSTIK 4000 150 mm double sided bituminous tapes.
  4. Remove release film from BITUSTIK™ tape patches and apply boards to clean, dry membrane and roll/press patches firmly.
  5. Alternatively a mastic or contact adhesive recommended by GCP Applied Technologies can be used to fix the boards.
  6. Once the protection board is fixed in place, subsequent boards shall be laid continuously by butt fitting the edges. Ensure boards stay close butt joints during backfilling and compaction.
  7. Provide temporary propping of protection boar

Product Advantages

  • Flexible - can be folded through chamfered edges without cutting or breaking
  • Fast, easy and cold applied
  • High resistance to impact and puncture
  • Rot resistant and durable
  • Recommended for use with BITUTHENE and backfilled PREPRUFE membranes
  • High heat resistance - allowing use at elevated temperature in hot climates
  • Provides protection to membrane against damage from backfill and site operations


Maximum UV exposure of protection boards is 30 days. On vertical walls due to the temporary fixing used, backfill is recommended as soon as installation is completed.

Health and Safety

There is no requirement for a SDS (Safety Data Sheet for protection boards or tapes).


Store in a shaded and ventilated area on flat pallet horizontally. Keep boards flat.


Thickness Coverage Length Width Weight Supply
3 mm 2 m2 2 m 1 m 8 kg/board 250 boards/pallet
4 mm 2 m2 2 m 1 m 10 kg/board 200 boards/pallet
6 mm 2 m2 2 m 1 m 15 kg/board 125 boards/pallet

Ancillary Products

BITUSTIK™ Standard 150 mm x 12 m rolls (6 rolls per carton)

* All dimensions and weights are nominal
All declared values shown in this data sheet are based on test results determined under laboratory conditions and with the product sample taken directly from stock in its original packing without any alteration or modification of its component parts. | United Arab Emirates customer service: +971 4 5139560

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.

SERVIPAK FLEX 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 2019 GCP Applied Technologies Inc. All rights reserved.


GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA
P. O. Box 5006, Office 2104, 21 Floor, The Exchange Tower, Opp. JW Marriott Marquis Hotel, Business Bay, Dubai – United Arab Emirates
This document is only current as of the last updated date stated below and is valid only for use in the UAE. 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 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: 2022-11-18