About two weeks go we had a homeowner raise a very important concern that is pertinent to all homeowners, especially this time of year...mold and moisture issues.
Unfortunately it is a common occurrence, and in recognition of this, the Canadian Mortgage & Housing Corporation (CMHC) has published a very helpful booklet “Moisture & Air – Householder’s Guide – Problems and Remedies”. This guide addresses how to control humidity levels in homes based on the outside temperatures.
This guide advises that:
- In very cold weather, a level of 30% or lower may be needed to prevent window condensation.
- In the winter heating season, the relative humidity should not exceed 45%.
The guide is in PDF form and will need to be downloaded or a hard copy can be ordered and delivered free of charge. It is well worth the read.
Here is the link for reference to this booklet - https://www03.cmhc-schl.gc.ca/catalog/productDetail.cfm?lang=en&cat=5&itm=37&fr=1299247008022