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Sun Life Financial – Wellesley Hills, MA

Repair & Waterproofing of Precast Concrete Façade Panels

Architect:: Wessling Architects    Property Manager:  Jones Lang Lasalle

The Challenge:  Replace failed joint sealant, rout and seal cracks in precast concrete façade panels and apply two coats of 100% solids clear water repellent penetrating sealer to the precast concrete façade panels -- all while not disturbing operations in two buildings at Sun Life’s U.S. Headquarters.

The Alpha Weatherproofing Solution:

  • Achieved access to work locations on the building facade using a combination of quiet-running swing staging, boom lifts and a tracked boom lift for the difficult-access main entrance
  • Rigged difficult-access atriums with engineered box beams capable of supporting the cantilevered swing staging
  • Coordinated each staging drop with the Sun Life Property Manager, to minimize or eliminate disruption to employees
  • Worked in high traffic areas and loading docks during off-hours, eliminating disruption to Sun Life employees.
  • Applied a two-component, non-sag, polyurethane elastomeric sealant capable of +/- 50% joint movement
  • &Applied a clear sealer consisting of 100% solids, breathable, penetrating water repellent, to provide maximum long-term protection against salt corrosion, mildew, water, wind driven rain, airborne contaminants, surface spalling from freeze/thaw cycles and other extreme weather conditions

The Process:

  • Power-washed building façade to remove dirt and surface contaminants
  • Replaced failed joint sealant at select locations
  • Routed and sealed cracks in precast concrete façade panels
  • Repaired any spalled/damaged concrete
  • &Applied two coats of clear water repellent penetrating sealer

The Successful Result:

This project was completed on time and under budget, providing a façade waterproofing system that can stand up to New England's harsh climate.

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