Finished Basement Systems in Lennox, SD

Call (605) 210-7667 Lennox is 23 miles from Sioux Falls. You hear back from a person, not an autoresponder, within one business day. Call before 3pm on a weekday and it is usually the same afternoon.

Block foundations plus finished walls is the combination that most often needs a bigger fan than the square footage suggests. Block cores are an open air path, the finishing covers them, and the system ends up pulling conditioned air through the wall unless the sealing was done before the studs went up.

What we see in Lennox

Mid-century housing near the Lennox city park and along Main Street is where this shows up. Partial basements over crawl space, common here, add a second problem: the crawl portion needs a membrane and its own suction point, and reaching it through a finished area takes planning.

Practical notes for Lennox homeowners

If you are about to finish a Lennox basement, seal the block and the cold joint first and put the pipe in while the walls are open. It is a fraction of the cost and a better result.

Finished Basement Systems in Lennox: the technical part

Block foundations behind finished walls are the reason some Lennox systems need a bigger fan than the floor area suggests. Every block core is an open vertical path, the top course is usually uncapped, and the finishing has covered all of it. The system ends up drawing conditioned air through the wall cavity as well as soil gas from under the slab, which is inefficient and noisy if it is not designed for.

What the job looks like in Lennox

Where any part of the block wall top course is accessible, in the mechanical room or above a dropped ceiling, we cap and seal it, because that is the highest-value sealing on the whole job. The rest is fan sizing off measurement. On some of these houses a small dedicated pickup drawing from the block cavity itself is the right answer.

Lennox in short

Lincoln County farm town southwest of Sioux Falls with a stable, mostly older housing stock.

Lennox radon questions

What is block cavity depressurisation?

A suction point that draws from inside the hollow block wall rather than from under the slab. It is not needed on poured walls and it is occasionally the difference on an old block foundation.

Why does my system feel like it is pulling air from the room?

Usually an unsealed block wall or an unsealed cold joint. It is worth fixing rather than accepting, because you are paying to heat air that goes outside.

Need finished basement radon mitigation in Lennox? Call (605) 210-7667 or send the form. Full detail on how these systems work is on our finished basement radon mitigation page, and every radon service we offer in Lennox is listed on the Lennox page.