What is the final radon level that will be achieved? Below are our statistics and they speak for themselves.
The most cost effective solution is a slab fan system. The technical term is a sub-slab depressurization system.
First, a hole is bored into the concrete floor. Next, 20-30 gallons of dirt are removed to create a radon collector pit. Then, four-inch PVC plastic piping is sealed to the hole and runs up through the garage and into the attic where the fan is located. The fan (which consumes as much energy as does an 80-watt light bulb) then blows the radon out of the house via the roof on the back side of the house. An alternative method is to put the fan on the outside of the house and run the pipe through the soffit or around the gutter.
The cost of mitigation ranges from $1,200 to $1,800. The cost to install a radon mitigation system in a house with a crawl space starts at an additional $1,000.
We do not take any shortcuts. We take pride in our work and do whatever it takes to make the system blend into the house.
When the exhaust pipe is installed up through the roof, our “jack-flashings” are installed with the precision and professionalism of a licensed roofing contractor. We weave the flashing into the shingles. A properly installed roof flashing does not require roof cement. Poorly installed roof flashings use roof cement to cover up poor workmanship. Knock on wood, to date we have not had to go back to a house to repair a leaking roof flashing.