It s not a problem everywhere but the bedrock in some regions produces enough radon for it to concentrate on basements enough to raise the risk of lung cancer.
Radon gas exhaust fan.
Radon test kits are readily available online and in home centers.
Radon exhaust stacks placement to avoid freezing in cold climates.
The critter and the fan rarely survives.
When installing an asd system for radon reduction any openings major cracks and penetrations in the building slab or membrane must be sealed.
Radon suction pipes are installed in the collection chamber and continue to the radon vent fan.
The pvc duct system is through where the radon fan exhausts the harmful radon gas from your basement.
The rn4 4 is equiped with a speed controler that can be used to dial in the fan as required.
Quality radon exhaust fan.
Radon is a radioactive gas and known to be a carcinogen.
Fantechs rn4 4 is the most powerful model in the radon family the the rn4 can create 4 3 of vacumm while moving 20 cfm of air or move 490 cfm air at 0 5 of suction.
Meet the fan curve.
Schedule 40 pvc vent pipe using 3 in.
The radonaway rp145c radon fan is built to resist moisture and can be mounted inside or outside on a 3 in.
Fan curves tell you how much cfm you re moving at a given resistance or suction measured in inches of water column pressure.
Think of it as the core of your complete radon risk control strategy since it s the only way to remove the gas from your home actively.
Don t forget a cap for the pipe.
A varmint guard or critter guard will keep acorns hail stones and yes small animals out of the fan.
This duct is in most cases 4 in diameter.
Steps for installing radon mitigation.
Radon stacks are often brought up through the walls and vented out through the roof like a plumbing stack.
When planning your radon exhaust location be sure that windows on a 2nd or 3rd story that over look the vent are at least 10 feet away.
One end of this pvc duct is connected directly into a hole drilled in your basement s concrete floor or it can be connected to your sump pump pit.
It happens all the time.
Its potentially life saving roles.
Draintile depressurization is the means of pulling the radon gas and other soil gas by creating a vacuum within the existing draintile network of a sump or drainage system.
The intention of that design is to keep it far enough from open windows to prevent the radon gas from re entering the home but that is unnecessary and can work against you.
However with radon fans you re at the mercy of soil conditions sub slab fill suction pit sizing and much more.