Thermal Movement

Daily and seasonal expansion and contraction of masonry materials due to Ontario's extreme temperature swings from -30°C to +35°C. Different materials expand at different rates, creating stress that cracks mortar joints and damages masonry if not properly accommodated. Thermal movement is particularly destructive in Ontario due to rapid temperature changes during spring and fall transitions. Professional design includes expansion joints, flexible connections, and proper material selection to accommodate movement. Ignoring thermal movement leads to recurring cracks, water infiltration, and expensive ongoing repairs that could be prevented with proper initial construction.