Radon Home Measurement and Mitigation in Colorado serving Ft. Collins, Loveland, Greeley and surrounding areas.

In the column with header "Building Type" we indicate whether the house is a one-story ranch, bi-level, tri-level etc. Tri-level homes have variations where the lowest and middle floors consists of either a concrete slab plus a crawlspace (Slab +Crawl), or of two slabs. We also show if basements are finished or unfinished where relevant. Some additional remarks can be found on special situations we encountered.
In some cases we go through 3 finished levels vertically up plus an attic, this is indicated as "3.5 levels".

Under the header "System Details" we distinguish when the system was Interior (fan in attic) versus Exterior (fan outside). Here we also show the number of branches that were installed on that system.

Finally under "System Type" we indicate whether the system reaches the entire footprint with the vacuum produced by the ventilator (also called the Pressure Field Extension, or PFE) as verified by the sub-slab de-pressurization communication (SSDC) test on the day we do the work. This completes with the caulking of all reachable areas an EPA system. Therefore this is called a "Complete System". If a small section of additional slab, or crawlspace exists that is not reached with the vacuum, such a system is called an Incomplete, or Phase I system. Incomplete systems are only installed if they have shown to work via the Clearance Test, and perpetual continued testing by the home owner is encouraged to test if they continue to work.

"Ideal Systems" are systems that have unfinished basements and all cracks, grooves and openings can be completely caulked and they have a an interior drain tile pipe on inside of the footer that can be reached. This is the same as an RRNC-system in new home construction. In addition we can step up the quality of a regular RRNC to take better care of energy losses by installing a double barrier under the concrete slab which are individually fully sealed to the foundation and footers in new home construction. The latter is called an "Ideal System" with additional energy efficiency features. These systems are recommended when the slab has in-floor heating.

The color designation in the background of each row is emphasizing the following characteristics of system and home styles:

1: Interior Radon Mitigation System
In the case of an Interior System the pipe can be shielded from the outside view and noise can be kept away from interior finished areas.
radon system in attic

In the first picture the ventilator is in the attic of this home. The vent pipe is here only visible as a small speck on the roof. The pipe routing went from unfinished basement into the kitchen pantry (backside wall) into the masterbedroom closet (along backside wall) into the attic and through the woodshake roof. The ventilator was placed in the attic immediately under the roof as shown in the next picture.

Interior System: Ventilator and pipe optimally shielded from the view, outside and inside.

In the case of a 4 foot high crawlspace in your home a conventional radon mitigation system (ASD) is installed (any one of the examples 1 through 3) in combination with a collector system under this white special radon barrier (black plastic is not a radon barrier) as is shown in various pictures (click photo for more pictures).

A fully certified person by the National Environmental Health Association (NEHA) will do the Radon Mitigation.

EPA standards and procedures will be followed.

We have mitigated all types of homes including:

Typically we obtain results below 1.5 pCi/L after our mitigation is done.

We work professionally and clean. After the mitigation work is over, apart from a system that is installed appropriately hidden in your home, there is hardly any tell tale signal that we worked in your home.

Our systems are always designed to incorporate your wants and needs in them: