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Certified Radon
Mitigation Services
in the Okanagan

We install radon mitigation systems to dramatically lower radon levels. Whether you live in a home, a townhouse, a condominium, or other building, we have a professional solution for your unique situation.

Active Sub-Slab Depressurization (Concrete Floor)

We mitigate in accordance with Canada’s National Standard for Radon Mitigation Options in Low Rise Residential Buildings.

With active sub-slab depressurization systems, we seal all readily accessible cracks, gaps, and penetrations with approved materials while using HEPA filtration. Utilizing calibrated devices, we measure sub-slab air pressure and flow to determine feasibility and placement of the system (Diagnostics Phase). After diagnostics, a 5-inch hole is drilled through the concrete floor (usually in a closet or utility room) and a radon system installed. 

In short, the radon system will depressurize the air beneath the home, pull the radon into a pipe, and exhaust it safely outside.

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Active Sub-Membrane Depressurization (Exposed Soil/Sand/Gravel crawlspace or basement)

For this unique type of mitigation, we use a highly specialized and industry leading radon membrane called Radon Block.

The Radon Block is systematically installed above perforated pipe. The membrane is double sealed at all lap joints and then fastened to the perimeter foundation wall. Above the membrane, a radon fan is connected to the perforated pipe located below the membrane; this reverses the air pressure differential between the house and the soil to greatly reduce the amount of radon entering in the home. The radon gas is then piped outdoors to a safe discharge location, where it dissipates quickly (as proven by Health Canada).

These mitigations are often the most labor intensive, physically demanding, and costly; however, they often provide the lowest post mitigation radon results, with levels consistently falling below 15-30 Bq/m3, year round.

Sealant Work

A surprising amount of radon can enter the home through cracks, wall joints, floor drains, bathtub installations, and floor to wall joints. Careful and detailed sealing and caulking of these deficiencies will increase the effectiveness of all radon system and can even improve radon levels in a non-mitigated home. However, sealing is not recommended as a stand-alone procedure for radon mitigation (unless radon levels are already extremely low) because radon continues to flow through vapor barriers and concrete until the pressure beneath the building is reversed. Sealant work is a powerful way to improve the performance of all radon mitigation systems.

Our Process And What To Expect:

Step
01

Testing

First, find out what your radon levels are by using an accurate testing device. We do not recommend purchasing a radon test device from a big box store because: they are not C-NRPP listed, they lack a quality control program, and their accuracy is unreliable. See our Radon Testing page for details on where to find the right device to measure your radon.

Step
02

Diagnostics (sub-slab air communication testing)

In order to install an effective radon mitigation system, we must first quantify the sub-slab pressures in various locations by drilling small testing holes and measuring the pressure differentials below the slab. Once that data is collected, a larger suction point is drilled and a hole excavated to create a suction pit beneath the slab. A diagnostic radon fan is then connected to the suction point and static head (pressure, aka suction) and flow is measured. If an adequate pressure drop is achieved at each test hole, the system design is now complete, and we can determine the correct fan size and/or fan speed. Of note, if the results show inadequate sub-slab depressurization at this stage, additional work will be required to improve air communication before system design can be finalized and the system installed.

Step
03

System Installation

Based on diagnostics results, an appropriate system design is selected and installed, in accordance with Canada’s Standard for Radon Mitigation (new residential buildings: CAN/CGSB-149.11, or existing residential buildings: CAN/CGSB-149.12).

Step
04

System Verification

  • Final sub-slab air pressure diagnostics are completed to verify system design and efficacy.
  • Next, a short term radon test is conducted by Synergy Radon to verify that radon levels have been substantially reduced.
  • Documentation is emailed to the client upon job completion.
  • The client is responsible for conducting a long term post mitigation radon test during the upcoming winter (ideally using a 3 month alpha track detector, such as the Radonova Radtrak3 or the Accustar detector).
Step
05

Monitoring (Mitigation Maintenance)

After installation, the radon mitigation system will operate without any influence from the homeowner or occupant. There is a visual indicator (a utube manometer pressure gauge) installed on the system that allows occupants to verify system operation.

We do recommend an annual system review for fan inspection and cleaning. This will keep your system in top-notch condition and help prevent unexpected issues from arising.

FAQ

Health Canada recommends mitigating your home within two years if the levels are between 200-600 Bq/m3. If the levels are over 600 Bq/m3, then mitigate within 12 months. That being said, no amount of radon in the lungs is safe, so it is best to mitigate as soon as possible.

It largely depends on the building layout, structural design, and sub-slab fill porosity. A two person crew, for example, Cody and one of his employees, can complete most jobs within a couple days. However, the more complex the structure, the larger its size, and the more fine and tighter the compacted fill is below the slab, the longer the mitigation will take and the more expensive the job becomes.

Thank-you for asking! Please remove stored items from the areas we will be working, such as the corners of the basement, the mechanical room, under stairs or where the system is planned to be installed. If possible, allowing us use of an attached garage or carport will expedite our work. If we are mitigating in a crawlspace, please ensure there is a clear path to the crawlspace hatch, that the hatch is operational, and all items stored in the crawlspace are removed. If you are having a system installed on your ground floor or basement, remove items from the area where the system is going so that the installer has room to work. Make sure there is a clear path for workers to walk back and forth with their equipment. If you are sensitive to loud noises (concrete coring, drilling, sawing, vacuuming) we suggest wearing ear protection or heading outside. If you are very sensitive to chemical smells (people with COPD or asthma, infants) then ask your mitigator when he will be using sealants and request low VOC and low odor sealabt options.

There are many variables: square footage of the building footprint, how bearing walls and their strip footings/grade beams divide the building into sections beneath the concrete slab, type of sub-slab fill & its compaction level, porosity of the sub-slab fill air, compaction of soil beneath the home, exhaust routes available, rising costs of materials, number of fans required… Due to these factors and many more, the costs of mitigations are highly variable. This is why our company only provides estimates and not quotes. Think of a radon mitigation as a small renovation; exact pricing at the start of the project is impossible. That being said, we will communicate closely with our clients if we expect the job to exceed the estimate.

We typically book 4 to 8 weeks out. However, clients occasionally postpone jobs, which can create openings sooner. Let us know if you have a special circumstance that requires immediate attention (lung cancer patient, children/infants exposed to extremely high radon levels…)

No, however, we do require 50% of the estimated cost by the end of first day. The balance is due upon job completion and the client’s receipt of the final invoice.

5 years on the fans. The overall system is 5 years with scheduled yearly maintenance.

Yes. The earth’s crust is constantly moving and shifting, and therefore the radon gas that filters up through the earth is moving along with it. It is advisable to re-test your house every two to five years or after any significant renovations or changes and upgrades to the systems or components of the building.

enjoy peace of mind
knowing your space is safe from radon.
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