Going with full frame replacement is always the smarter move if you have an older house. Contractors who just suggest inserts are often trying to win the job with a lower price, but inserts actually reduce your total glass viewing area and won’t fix any hidden wood rot inside the walls. Our old brick-to-brick frames were completely drafty, so cutting them out entirely was necessary. Having our Mississauga window replacement done before summer — great team made a massive difference in our cooling bills once the heatwaves hit.