The BC Building Code now requires new homes and commercial buildings to have a radon system roughed-in. The rough-in consists of a porous layer and a polyethylene barrier beneath the slab and radon piping that extends from below the slab, through the home and out to the exterior. A properly installed radon rough-in along with thorough slab sealing at the time of building construction can make future radon mitigation, if necessary, a much easier and less costly process.
Radon rough-in systems that have not been installed to meet the BC Building Code often have issues such as improper sub slab material and excessive air leakage around the slab / wall joins. Even those installed to code will often have inaccessible piping or no suitable room to place the radon fan which will affect the system's usability.
If a radon rough-in system has not been installed properly, it may require significant additional work to make it functional or, in some cases, may not be usable at all. These scenarios lead to increased costs and unhappy building owners.
It is much easier and cost-effective to properly install a radon rough-in the first time! A builder has to juggle many details during construction and the radon rough-in may not get the attention it needs. Little Bear Engineering can help with the design, planning and construction of radon rough-in systems. This can save time, future headaches and potentially a future lawsuit.
Little Bear Engineering offers the following radon-related services for new buildings:
Radon Rough-In Drawing Review
We will review your building plans to ensure the radon rough-in will be usable as designed. We will look for common mistakes that may limit the usability of the rough-in for a future radon mitigation system. Following review, we will make recommendations to ensure the rough-in meets the BC Building Code and to improve its functionality.
Radon Rough-In Design
We will design the complete radon rough-in for your building. The design will include selecting an appropriate location for the sub-slab and interior radon piping, taking into account house-finishing details. The design will provide detailed specifications for the porous sub-slab layer and polyethylene barrier installation. Recommendations for sealing wall / slab cold joins will also be provided to minimize the chance of failure as the slab pulls back. The radon rough-in design will be provided as a complete set of engineer-sealed drawings and specifications.
Radon Rough-In Inspection
Regular inspections during the construction process can help ensure a radon rough-in is installed properly. Mistakes are much easier to fix early in the construction process, before the concrete slab is poured and drywall is installed. We provide rough-in inspections for systems we have designed and also those designed by others.
Radon Rough-In Installation
Why not leave the radon rough-in installation to the professionals? We can install both the sub-slab and above-ground radon piping during building construction. We can also seal the foundation wall / slab joins using approved sealants and methods. Sealing the slab properly will account for concrete shrinkage and will minimize air leakage thus reducing the chance of invasive work in the future to access leaking cold joints.
Please contact Little Bear Engineering for details and pricing for any of the above services.