A.Rob Corbo, a general contractor in Elizabeth, N.J., responds: After you've double-checked the dimensions of your window to verify that it meets egress window code, I'd recommend that you also double-check the conditions around the proposed opening in the foundation.
If excavation will be required to accommodate the new window, be aware that making grade changes could introduce complications. You don't want water running toward the house, so you may need to add money to the budget to address that issue. You'll also need to temporarily support loads over the opening with a 4-by-8-inch header that's long...
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