Most builders and contractors are professional and will take responsibility for their workmanship, others are quick to point the finger at somebody else, usually any other trade will do as long as it is not them. Tarion allows your house to settle for one year before they will look at or discuss any drywall cracking issues.
First problem is, your load of lumber used to build your home. Un-like myself when buying lumber, choosing the straight lumber takes up most of that time. On the other hand, your home package is dumped off in one large skid at the construction site. So your framer has just the right amount of lumber to build your home. Most framers won’t bother checking moisture content and straightness of the lumber, he will make do with what he has. A good framer will use most of the warped pieces as fillers etc where they won’t matter as much.
Most homes in the Barrie, Alliston, Orillia area have 2X8 floor joists. If it is raining when your package is delivered these joists will be exposed to extreme moisture until the roof is completed. This is a recipe for high moisture content and eventual shrinkage and possible warping etc.
As the lumber gives up this moisture, the change in size can be dramatic. But it is important to know that a standard piece of lumber does not shrink the same amount along all of its dimensions. The greatest amount of shrinkage occurs across the face of the grain.
Let us assume that a standard 2×4 that is 8 feet long will be exactly 96 inches long, 1.5 inches thick and 3.5 inches wide. Once this 2×4 has been in your house for 6 months and had a chance to acclimate and dry out if it was wet, it will still be nearly 96 inches long. There is very little shrinkage along the length of the lumber.
The thickness of the 2×4 will change slightly, but not by much. But the width of the 2×4 will experience the greatest shrinkage. It may only measure 3 and 3/8 inches in width. Imagine how much shrinkage might happen with a large 2 x 12


