Poured concrete basements are usually the most straightforward homes to mitigate. A single well placed suction point often reaches the whole slab. We connect York homeowners with a local contractor who handles the install step by step, from core drilling to sealing the slab and checking suction before leaving. Here is what York homeowners should know before calling.
Step by Step on Install Day
Install day follows a clear sequence. First, the contractor protects the work area and confirms the suction point location you agreed on. A core drill cuts a round hole through the slab, and a small pit is dug out underneath to give the soil gas room to collect and flow into the pipe.
Next, the PVC pipe is set into the hole and sealed to the concrete. The pipe runs either up through the house to an attic fan or out through the rim joist to a fan on the exterior wall. Pipe supports keep it straight and secure.
The fan is mounted outside the living space and wired. Larger cracks, the floor to wall joint where accessible, and other openings are sealed. Finally, the manometer is installed and the system is switched on.
Restoring the Slab
The slab around the suction point is sealed tightly where the pipe enters the floor. This seal keeps basement air from leaking into the pit and weakening suction, and it keeps the area clean and finished looking.
Any test holes drilled during the estimate or install to check air movement are patched as well. The concrete dust from drilling is vacuumed up, and the work area is cleaned before the contractor leaves.
If the suction point is in a space you plan to finish later, talk about it now. The pipe can be placed close to a wall or in a corner where it is easier to box in. Knowing your plans ahead of time keeps the pipe from ending up in an awkward spot.
Commissioning the System
Before the contractor leaves, the system is checked. The manometer reading confirms the fan is creating suction in the pipe. In many installs, the contractor also checks suction at a small test hole away from the main pit to make sure the effect reaches across the slab.
The contractor marks the starting level on the gauge, shows you how to read it, and explains what a change would mean. You should also know where the fan's power switch or breaker is.
Then it is time to retest. Wait at least a full day after the fan starts, place a short-term kit in the lowest lived in level, and keep the house closed during the test. Save the result with the written scope and the gauge reading.
A Clean Install From Start to Finish
A poured basement sub-slab install is the classic radon fix, and done carefully it leaves a tidy, quiet system. Having the plan in writing makes the decision easier and the follow-up simpler. With the right information, the next step is usually simpler than it first seems. Every home is a little different, and a short visit is the fastest way to learn what yours needs. Call us and we will connect you with a local contractor for a free estimate at your York home, with every step of the install listed in writing.
Frequently Asked Questions
How is sub-slab radon mitigation installed in a poured York basement?
The contractor core drills a hole through the slab, forms a small suction pit underneath, seals a PVC pipe into the hole, and runs it to a fan outside the living space that vents above the roof. Cracks and openings are sealed, a gauge is added, and suction is checked.
How is the slab restored after cutting a suction point?
The pipe is sealed tightly to the concrete where it enters the floor, and any test holes are patched. Concrete dust is vacuumed up during and after drilling. The finished area should look neat, with the pipe supported close to a wall where possible.
What checks confirm the system is working before the contractor leaves?
The contractor reads the manometer to confirm suction in the pipe and often checks suction at a test hole away from the main pit. The starting level is marked on the gauge. A short-term radon retest after at least a full day confirms the result inside the home.