THis insulating foam is perfect for drafty NYC lofts. We used it in our office to seal the space between the wall and the floor. On gaps that were larger than one inch we would spray it, let it cure and go back for another round. It is very easy to trim with a razor or knife and can even be sanded for a more seamless finish. Just always remember to wear gloves when insulating as this stuff is sticky! It is possible to use it more than once, but the plastic straw it comes with much be thoroughly cleaned. I used paint brush cleaner on a bamboo stick with a little cloth (think giant Q-tip) to push it through a  few times cleaning out the insulation before it dried. It's a task, but worth it to have a second use.