Combination foundations need combination systems
Where a house sits partly over basement and partly over slab or crawlspace, each area may need its own treatment. Ask how each will be handled.
York County, Pennsylvania
Radon guidance for Springettsbury Township, east of the city along the Route 30 corridor.
Call (717) 555-0143Springettsbury Township runs east of York and mixes established residential neighbourhoods with commercial development along the main corridors. Residential housing here is largely basement construction, which puts it squarely in the category where testing is worthwhile regardless of what the neighbours report.
One point specific to areas with a lot of mid-century housing: garages and additions built on slabs alongside a basement foundation create a combination building. Mitigating a combination foundation properly can mean treating more than one area, and it is a common place for an under-scoped quote to fall short. If part of your house is over a slab or crawlspace and part is over a basement, make sure any quote addresses both.

Where a house sits partly over basement and partly over slab or crawlspace, each area may need its own treatment. Ask how each will be handled.
Slab-on-grade additions are frequently overlooked in mitigation design. Point yours out explicitly when getting quotes.
Where a combination foundation means more than one area is treated, confirm the certified firm is covering all of it rather than subcontracting part out to someone you have not checked.
On a combination foundation, a post-mitigation test in the basement alone can miss an untreated slab area entirely. Ask where the retest will be placed.
Independent guidance on radon testing, mitigation costs and DEP-certified contractors for homeowners in Springettsbury Township and the surrounding parts of York County.
Ask about a test result, what a Springettsbury Township mitigation quote should include, or how to check a contractor’s DEP certification.