That is absolutely what Health Canada's looking at with the research we're doing, from two perspectives. From the perspective of the work that's being done to retrofit a home, is there an opportunity to build radon out in that situation? Secondly, with regard to what's being done to retrofit and seal up the home, is there a risk of increasing the radon level in the home? That research is still ongoing so we don't have all of the results.
On June 18th, 2015. See this statement in context.