Proper ventilation is one of the most important parts of a new construction roof because it affects moisture control, attic performance, and the long-term life of the roofing system. In Hamilton, roofs have to deal with humid summers, winter frost, and repeated freeze-thaw cycles, so poor airflow can lead to condensation issues and premature wear over time. Aucoin Roofing plans intake and exhaust ventilation carefully so the roof system is built to perform properly in real Southern Ontario conditions.