On August 28th, 2013 on the 11th China Roofing & Waterproofing Expo 2013, Sika signed strategic partnership agreement with Golden Umbrella Waterproofing Co., Ltd (GUW) to work together for concrete sealing and waterproofing solution.

The cooperation will further enhance the competitiveness of both sides in the global waterproofing market. GUW is a leading company specialized in concrete waterproofing products, it has built a biggest CPS self-adhered & reaction waterproofing membrane plant with annual capacity of 90 million m2. The cooperation with Sika will greatly promote GUW’s position in concrete sealing and waterproofing technology.

Sika, a global leader in high polymer thermoplastic waterproofing membrane

Founded in 1910 with headquarter in Switzerland, Sika is a global company supplying specialty chemicals to construction and industry markets.


In the roofing field, Sika is a leader for thermoplastic membrane, and is an expert in joint and connections for underground waterproofing. SikaSwell, the swellable sealants and profiles which are widely used in the developed markets, provide professional solutions for construction joints.

Visits laid foundation for the cooperation

Mr. Lu Guicai, Chairman of Golden Umbrella told reporters: “The cooperation comes from the sincere willingness from both sides, based on in-depth understanding, win-win terms and mutual attraction. Before we signed the contract, we had several visits and talks to each other. Both of us think that we will be the best partner for the market.”

Back to March this year, led by Alexander Bleibler, Head of Sika AG BU Contractors, Kelvin Chew, Vice President of Sika China and Mark Lo, Vice President of Sika Asia Pacific, a Sika team visited GUW Industry Park. They had an in-depth communication with GUW Mr. Lu on different aspects in the waterproofing technology in Europe and China.

GUW’s continuous efforts on systematic research of concrete sealing and bonding left good impression to Sika team. The communication laid a sound foundation for the following visits from both sides. Afterwards GUW Mr. Lu together with his management team arranged a visit to Sika (China) Co., Ltd. and Sika Sarnafil (Shanghai) Co., Ltd. GUW team was convinced by Sika management concept, production equipment and advance lab facilities.

In July 2013, Kelvin Chew, together with Sika roofing product management and technical service team, paid a three-day visit to GUW Waterproofing Technology School. During the visit, Philipp Irniger had hands-on CPS application to have an in-depth understanding for the membrane properties and application technique. It’s also very beneficial for a possible cooperation on CPS membrane in regional markets in future.

Cooperation will lead the concrete waterproofing technology development

Sika is very experienced in the technology development and real application for concrete waterproofing joints. SikaSwell products are widely used for joints and connections in tunnels; the CPS membrane from GUW had advantage for concrete waterproofing area. The strategic cooperation of Sika and GUW will provide more professional waterproofing technology and service to Chinese clients, solving the problems in concrete structure waterproofing.

Mr. Zhu Dongqing, President of China Waterproof Association, said that the partnership is a milestone in waterproofing industry and will promote the development of waterproofing technology in China.

According to the agreement, GUW will sell SikaSwell products through its 200 Experience Centers to promote Sika brand, and will introduce high-quality products & technology to Chinese clients for underground waterproofing. At the same time, both sides will work together to develop waterproof membrane suitable for underground concrete structure in Asia Pacific region and further worldwide. 

At the signing ceremony, both sides believed that the joint effort will build a global pioneer in concrete waterproofing, and will further improve the underground waterproofing technology.