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Exterior retrofit before/after:
This Prospect Lake home had a mould problem on the interior due to the poorly insulated walls. Every winter, condensation would form on the cold walls, leading to a pretty nasty mould issue. In 2009, the owner had enough and the house was retrofitted. To repair the home, the walls were retrofitted by removing the batt insulation from inside and adding R13 of open cell foam. Then we added an exterior layer of R18 closed cell foam, along with a rain screen system and new Hardie Plank siding. Now the walls are R31 rated are completely air tight! The roof was re-insulated as well with an exterior layer of closed cell foam, and new sheathing and shingles to complete the package. A true deep retrofit that also score 84 on the EnerGuide rating.
For this project, we started with the foundation repairs, and eventually solved the entire homes energy efficiency issues.
This crawlspace was conditioned by removing the old batt insulation and installing CleanSpace two layer encapsulation liner across the entire crawlspace, sealing and anchoring the foundation walls and interior strip footing. Any exterior vents were closed off with membrane prior to being sealed with spray foam. R20 Closed cell spray foam was used on the exterior walls of the main crawlspace to insulate 100% of those walls.
CleanSpace provides a permanent ground seal & encapsulation system across the entire crawlspace floor. Adding spray foam to insulate and air seal the exterior crawlspace walls will stop the cold drafts and keep the heat in the home. Conditioning this space will help save energy and heating costs, whilst making the living space more comfortable.
Crawl spaces are highly susceptible to mold, pests, and rot due to the high humidity and exposure to moist soils. Island Basement Systems installed a CleanSpace encapsulation system to trap out the excess humidity in the crawl space, resulting in a more efficient energy system and ventilation for the home.
Check out this Saltspring Island crawlspace! From rodent-infested, musty and just plain nasty to clean, energy efficient, dry and even pleasant to look at!