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WraptiteSA Tokyo

Wraptite-SA airtight membrane has demonstrated its outstanding flexibility to offer high performance protection to the building envelope, in the restoration of a historic church building, which was damaged by the giant earthquake, which hit Japan in 2011.

Almost one hundred years ago, the famous American architect, the late William Merrell Vories, designed the Tokyo Wakaba Christ Church. After the devastation of the earthquake, the church was closed by the order of the public authorities. In a bid to restore this historic piece of architecture to its original use, architect Kikumi Kusumoto was commissioned to lead the restoration project.

The arched windows are a key feature of the church, and presented a challenge when specifying a suitable water resistant membrane, which was fl exible, yet resilient to resist punctures and tears, and provide high performance protection for the building. Mr Kusumoto selected Wraptite- SA, which was perfectly suited to work around the window arches, achieving full water protection.

Wraptite-SA, is a self-adhering, airtight, yet vapor permeable barrier, which is fully water resistant and was applied externally to the walls, and the windows. The self-adhesive benefits of Wraptite-SA removed any risk of failure through leakage, as compared with membranes requiring mechanical fixing with staples. Wraptite Tape was used on the installation to complement Wraptite-SA in dealing with the more intricate detailing around areas such as the windows, doors and penetrations.

The use of Wraptite-SA in the building envelope provides a signifi cant contribution to a building’s thermal performance by preventing lateral air movement. It also provides high vapor permeability, which allows any water vapor to escape the wall construction efficiently thereby avoiding any interstitial condensation problems.

Wraptite-SA - Tokyo Church



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