In British Columbia we have the unfortunate pleasure of living in a rainforest. This fact is both a blessing and a curse; it’s the reason we have beautiful greenery all year round, but is also one of the reasons we have such high occurrences of mould growth inside our houses. One of the reasons for this is when our houses are being built in the rainy season (Sep-May), the moisture content in the wood framing and OSB is often too high before putting up the drywall. Moisture content needs to be checked before closing drywall and should never be higher than 19%. If this doesn’t happen, mould has the potential to grow inside the walls.