Radon In Nova Scotia | Building A New Home | Radon Atlantic
Building A New Home? What You Should Know About Radon In Nova Scotia
Building a home from the ground up gives you the opportunity to address important details before they become difficult or expensive to change. That includes planning for radon in Nova Scotia, particularly when the foundation and below-slab components are still being planned. Rather than treating radon as something to consider after construction, homeowners can discuss radon-resistant measures with their builder before work begins.
Why Address Radon During New Construction?
A newly built home is not automatically protected from radon. Radon comes from uranium naturally present in soil and rock, so its presence is not determined simply by the age of a property. Even newer homes can have elevated indoor radon levels.
The advantage of new construction is that protective measures can be incorporated while the foundation is being built. Health Canada recommends passive soil depressurization systems for new homes because they can help manage soil gas before it enters the living space. These systems can also be upgraded with a fan if additional reduction is needed after testing.
What Makes A Home Radon-Ready?
A radon-ready approach involves more than installing a single pipe. The foundation and soil beneath the home need to be considered as part of a system designed to manage soil gas.
Depending on the construction method and home design, measures may include:
- A gas-permeable layer beneath the concrete slab
- A soil gas barrier or membrane
- Sealing around foundation openings, joints and penetrations
- A pipe extending from beneath the foundation to the exterior
- Appropriate placement of the system termination
- Provisions for converting a passive system to an active system
These details should be considered during the planning and foundation stages, when they can be incorporated into the construction process more easily.
What Should You Discuss With Your Builder?
Radon protection should be part of the building conversation before the foundation is finished. Homeowners can ask questions such as:
- What radon-resistant measures are included in the design?
- How will soil gas be managed beneath the foundation?
- Where will the radon system pipe be located?
- How will openings and penetrations be sealed?
- Can the system be activated later if testing shows higher levels?
- Who will oversee the radon-related installation?
- What information will be provided about the completed system?
Discussing these points early gives the builder, designer and radon professional an opportunity to coordinate the work with the rest of the home’s foundation and mechanical systems.
Does Radon-Resistant Construction Eliminate The Need For Testing?
No. Radon-resistant construction is designed to reduce the potential for radon entry, but it does not establish the actual radon concentration inside a completed home.
That is why testing remains important. Health Canada recommends long-term testing in new homes, with a test lasting at least 91 days during the heating season. A long-term test can provide a more useful picture of the home’s indoor radon level over an extended period.
Testing is also important for understanding radon in Nova Scotia homes because two properties in the same area can have different radon levels based on soil conditions, foundation characteristics and building features.
Why Testing Still Matters After Construction
Once construction is complete and the home is occupied, testing can show whether the measures incorporated into the building are achieving the intended result.
Health Canada recommends taking action when a long-term test shows a radon concentration above the Canadian guideline of 200 Bq/m³. If further reduction is needed, a passive system incorporated during construction may provide a starting point for conversion to an active system.
This makes the process straightforward: construction measures help address potential radon entry, while testing tells homeowners what is actually happening inside the finished property.
Plan Before The Foundation Is Finished
For homeowners building in Nova Scotia, understanding radon in Nova Scotia before construction begins can help them discuss radon-resistant measures with their builder.
After construction, a long-term test can provide the property-specific information needed to determine whether additional action is appropriate. Planning ahead puts the right questions on the table before the foundation is complete.
