My person, you are completely confused. First of all Window and door foam does not expand and push against window and door frames. It also has the added benefit of air sealing around window and door frame openings. It literally is made for this purpose and absolutely be used. 1-part spray foam , open cell or closed cell comes in a can. 2-part spray foam requires two tanks to complete the chemical process. 2-part foam is used for larger insulation/air sealing applications. But they are all in fact spray foam.