Radon Professionals Working
Together To Save Lives
INDOOR SUB-SLAB RADON MITIGATION
APPLICABILITY: Any house with a concrete slab floor on the lowest level (basement or first floor) where the primary radon source is below the house (virtually all houses with elevated radon levels).
PRINCIPLE OF OPERATION: A negative pressure field is created below the slab preventing the entry of radon gas into the house.
SYSTEM DESCRIPTION: One or more penetrations are made in the slab and a small pit is created beneath each penetration. PVC duct pipe is connected to the slab penetration(s) and routed unobtrusively (through closets, plumbing chases or other unexposed areas) to the suction side of the fan. PVC pipe is then connected to the pressure of side of the fan and routed through the roof using a standard roof flange and waterproof sealants. The radon gas is discharged safely above the roof. The PVC vent pipe protrudes slightly above the roof and has the same appearance as a standard plumbing vent pipe. A screen is attached to the top of the pipe to keep out animals and foreign objects.
There are several other approaches to reducing radon levels. This is the approach we take for most of our installations. The interior system is aesthetically pleasing and the fan is not exposed to the elements. In colder climates freezing is not an issue. We have over 30 years of experience in finish carpentry and building construction. You simply cannot get a better system installation.
OUTDOOR SUB-SLAB RADON MITIGATION
APPLICABILITY: Any house with a concrete slab floor on the lowest level (basement or first floor) where the primary radon source is below the house (virtually all houses with elevated radon levels).
PRINCIPLE OF OPERATION: A negative pressure field is created below the slab preventing the entry of radon gas into the house.
SYSTEM DESCRIPTION: One or more penetrations are made in the slab and a small pit is created beneath each penetration. PVC duct pipe is connected to the slab penetration(s) and routed to the suction side of the fan. PVC pipe is then connected to the pressure side of the fan and routed up the sidewall of the house to discharge the radon gas safely above the roof. Downspout may be used above the fan to give a better appearance to the system. Downspout may not be used in certain climates. A screen to keep out animals or other objects attached to the top of the pipe. A weatherproof electrical connection is provided for the fan.
It is important to note the while sealing cracks and other foundation openings is a basic part of most approaches to radon reduction the EPA does NOT recomend the use of sealing alone to reduce radon because, by itself, sealing has not been shown to lower radon levels significantly or consistently and would be at best a very temporary fix. Sealing of joints and cracks is done to stop the removal of conditioned air in the home not to keep the radon from coming in. We have found that sealing alone often increases radon levels.
There are several other approaches to reducing radon levels. Homes with crawl spaces or other unusual configurations will have a different type of system. Each system is designed individually not only to reduce radon levels but to be visually pleasing. If there are several design possibilities the home owner or buyer is able to make the decision. All of our work is top quality. We have no second best.
RADON SAFE INC guarantees to reduce the radon levels to below 4 pCi/L for 5 years as long as the exhaust fan is in working order. If a long term radon post-remediation radon test is greater than 4 pCi/L RADON SAFE INC perform further work at no expense to the homeowner. This warranty transfers to any subsequent owner. Please ask for a copy of our full warranty.
Radon Safe Inc
3622 Winding Way Road
Roanoke, VA 24015
540-265-0101 office 540 520 2391 cell
Toll Free 866-292-5208 (outside Roanoke local calling area)
I will praise the name of God with a song;
I will magnify him with thanksgiving.
Psalms 69:30
