Radon Mitigation System Installation in Saint Augustine, FL

Radon mitigation installs a sealed pipe and an inline fan that pull radon out from under your foundation and vent it above the roofline, before it can enter your living space. The method is called active sub-slab depressurization. Most Saint Augustine homes are finished in one day, and levels typically land well below 4.0 pCi/L.

How does sub-slab depressurization work?

Under your slab sits a layer of soil or fill holding radon-laden air at slightly higher pressure than the inside of your house. That pressure difference is what drives the gas indoors. Mitigation simply reverses it.

We core a hole through the slab, hollow out a small pit in the material beneath, and seal a PVC pipe into the opening. The pipe runs up and out to an inline fan, which runs continuously and pulls a mild vacuum on the space under the slab. Instead of drifting up into your kitchen, the radon takes the easier path: up the pipe and out above the roofline, where it disperses harmlessly.

What does installation day look like?

The crew walks the house first, looking at foundation type, slab penetrations, and where a pipe can be routed cleanly. Then, roughly in order:

• Core the suction point through the slab and excavate a small pit underneath.
• Seal visible slab cracks, expansion joints, and the gaps around plumbing penetrations.
• Run the vent pipe, either through an interior chase to the attic or up an exterior wall.
• Mount the fan in the attic or outside, never inside the living space, and wire it to its own circuit.
• Install a manometer, the small U-shaped gauge that shows the system is pulling suction.
• Clean up, walk you through the system, and schedule the post-mitigation test.

Most single-family homes need one suction point. Larger footprints, additions poured on a separate slab, or homes with poor sub-slab communication may need two.

How much does radon mitigation cost in Saint Augustine?

Most residential systems land between roughly $900 and $2,500. The variables are foundation type, how far the pipe must travel to reach a legal discharge point, whether the routing is interior or exterior, and how many suction points the house needs. Slab-on-grade homes with a straightforward attic route sit at the lower end. We quote after a walkthrough, itemized, and the number does not move unless you change the scope.

Will it be loud, or ugly?

The fan produces a low hum, roughly comparable to a bathroom exhaust fan heard from another room, and it gets mounted away from bedrooms. Interior routing hides the pipe almost entirely. Exterior routing leaves a white PVC pipe on the wall, which can be painted to match the house. If appearance matters to you, say so during the walkthrough, because routing is usually negotiable.

What does the fan cost to run?

The fan runs continuously, because radon accumulates continuously. A typical radon fan draws about as much power as a couple of old incandescent bulbs, so expect a modest addition to your electric bill rather than a noticeable one. There is also a small amount of conditioned air lost through the system, which is one more reason sealing the slab properly during installation actually matters.

How do you know it actually worked?

Two ways. The manometer gives you an at-a-glance answer forever: if the liquid columns sit at different heights, the system is pulling suction. And we run a post-mitigation test after installation, typically within thirty days, to measure the real result in the air. If the number is not below 4.0 pCi/L, we come back and adjust the system. That is what the guarantee is for.

How long does a system last?

The pipe and the sealing last essentially indefinitely. The fan is the wear item, and most are rated for roughly ten years of continuous operation, though many run longer. Glance at your manometer now and then. If the columns level out, the fan has failed and the house is no longer protected.

Why choose Saint Augustine Radon Pros?

We focus on one thing: radon mitigation for homeowners in Saint Augustineand the surrounding area. Call (904) 395-5498 and we will walk you through your options, what it costs, and how soon we can get to you.