Discover the transformation in a 1966 Stamford home, where we installed a two-pipe radon mitigation system in a semi-finished basement with a high radon level of 11.6. The before and after images illustrate the significant reduction in radon levels achieved despite the absence of a moisture guard and major structural modifications. The project also involved careful coordination with the homeowner regarding pet safety and potential adjustments.

The radon level measured 5.1 pCi/L, which is slightly above EPA action level.

A single-pipe system will be installed to mitigate radon to safe levels. The system will use standard 3” Schedule 40 PVC routed from the foundation slab up through the side of the home or attic, depending on structural layout and power access.

Before photos will capture the foundation area prior to drilling, and external areas for pipe exit, while after photos will show the sealed suction point, fan placement, and final exterior vent termination. Due to the Cape style and small footprint, routing is expected to be direct and clean.

Before: Two-pipe radon system poorly located at the front of the house with one extraction point covered in plastic.
After: Extraction repaired, third pipe added, and system relocated to the back of the house—away from bedrooms, per homeowner request. Crawl space encapsulated (12x42 area) for long-term control.

This property is not yet at the installation stage, so there is no "after" yet—but this is a perfect case where pre-planning is key. The contractor, Adrian Dognin, explained that part of the house has been gutted to the studs, while another section (with a crawlspace underneath) remains intact. Radon levels have reportedly tested high, though exact numbers are not available, and Adrian suspects that testing may not have included the crawlspace.

The home is currently being renovated as part of a sale process, though the homeowner, Lynne, has not yet set a closing date. She is working closely with Adrian to prepare the property for safe occupancy or transfer. This consultation is meant to assess the entire property thoroughly and plan a future system that accounts for both slab and crawlspace areas.

Before:
The radon mitigation system was operating with a basic exterior discharge configuration and lacked additional weather protection at the exhaust termination.

After:
The exterior system was upgraded with professionally installed vent components, providing a clean appearance, improved durability, and long-term protection from the elements while maintaining proper radon system performance.