Watermill Place Condominiums Location: Arlington, MA

Project Overview:

Challenge:
The upper level carport at Watermill Place Condominiums had originally been waterproofed with a single-ply membrane that had failed and was allowing water to penetrate down through the topping slab and precast plank system onto vehicles parked on the lower level.

Solution:
The Alpha Weatherproofing team was called upon to install a waterproofing system.

Preparation

• Reinforced plastic was erected under the slab to prevent leaking or damage to cars
• The topping slab was removed
• The failed membrane was removed and the surface was prepped using hydrodemolition

Membrane Waterproofing

• Cracks were saw cut, sealed and detailed
• Waterproofing was applied with gage rakes to ensure the proper mil thickness

Testing

• Numerous moisture tests were performed to ensure positive application
• Drains were plugged and a 24-hour water test was conducted

Concrete Pour

• A special protection course/drainage mat was installed
• 5-inch macro fiber reinforcement was added to the concrete to prevent cracking
• Line stripes and brick walkways were installed to complete the project
• Facility owners and residents were pleased that the parking area was successfully restored to a waterproof and worry-free condition.