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This crawlspace a damaged vapor barrier that covered the dirt floor only and did not seal against foundation wall. We installed a new vapor barrier and sealed against the foundation wall. Note: the after photo shows the new vapor barrier installation prior to installing the radon riser and returning the insulation to foundation wall.
Basement sub-slab installation.
A sub-slab mitigation system was installed in this Colorado Springs home against back wall of basement behind HVA system.
Before and after photos of crawlspace encapsulation.