Waterproofing the master shower

Steven today learned how the master shower is waterproofed.

A team from Armored Star Waterproofing parked the truck, uncoiled a hose, donned protective gear, and sprayed a seamless, flexible waterproofing membrane of Polyurea. John applied the first layer to the lightweight concrete base and vertical masonite walls that he installed last week, giving the concrete time enough to cure.

 

John from Armored Star Water Proofing sprays the first layer of membrane.
John from Armored Star Water Proofing sprays the first layer of membrane. Above, John explains how the system works as he distributes lathing staples for the tilesetters around the shower pan.

In the time it took for John to explain to Steven that the membrane is flexible and never cracks, the polyurea dried — and John stepped onto the membrane, dropped a supply of lathing staples for the tilesetters to use when laying tile, and sprayed a second layer of polyurea.

John sprays the second layer of membrane, checking all corners as he works his way around the shower pan.
John sprays the second layer of membrane, checking all corners as he works his way around the shower pan. The polyurea dries nearly instantly; John is standing on membrane that he just sprayed into place.

It will be ready for water testing tomorrow. The plumbers will seal the drain with an inflatable ball, fill the shower basin with water, and let it sit. If it leaks, it gets fixed. If it doesn’t leak, the inspector will pass it.

 

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