Doing it differently: Prosoco products as an example of contractors using products and techniques they've never used before
Working to LBC standards has raised the bar for the Margaret A. Cargill Lodge builder teams. They have stepped up and jumped over that bar every time. The use of new, unfamiliar products is one example.
The envelope of a building is absolutely critical to its energy performance. A commonplace technique is to use adhesive-backed rubber tapes and foams to seal the gaps between the window and the exterior wall, yet adhesive, tape, and foam products often contain toxic chemicals, as well as result in cut off waste.
At the MAC Lodge all window and exterior doors were sealed with LBC Declare labeled Prosoco products. This thick, liquid-applied product is painted on, filling even the tiniest gaps. It dries to become the flashing, the seal to the window, and the seal to the house wrap combined. Another benefit is that Prosoco’s R-Guard is breathable, helping to reduce moisture related problems in the future.
This was brand new technology for the contractors. They have found it a great product for accomplishing a very tight envelope – one that they will likely promote the use of on future jobs.
Once again, the Living Building process has challenged us to explore alternatives to the norm in our construction plans. Openness to change is helping us choose less toxic, better performing products for the Margaret A. Cargill Lodge, and growing the scope of alternatives for the building trades in our region.
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