Hello, We live in an old house from the 1920s with poor insulation. The basement in particular had several areas where cold air was pouring in. I am getting a proper assessment done of the whole house and will consider major efficiency upgrades, but in the meantime I read about expanding foam sealer and purchased a can. I filled in a hole around an exhaust pipe and a ledge. Now I really should have read more about it before going ahead as I have since learned I should likely have not used it for this kind of application, should have taken more health safety precautions, and shouldn't have disturbed any part of it while it was still curing. It did however make a big difference in reducing the cold air draft. But now that know more about risks and potential for off gassing I am concerned, especially as we have a baby in the house. Anyone know if the way it is used in these pictures might pose a significant concern? Any recommendations on what I should or should not do at this point? There are two spots where I did disturb the foam before it was cured. The professional assessment is only scheduled for next month so wanted to get some answers before then. Many thanks.

Not sure why photos are not displaying so linking to them here:

1) https://drive.google.com/file/d/1oYfd6qcdzZEQlB3Wqb6jiFnvitGuTW9X/view?usp=sharing
2) https://drive.google.com/file/d/1RxiGqryttMF5rifbU2XfuJFZGkkPTLkT/view?usp=sharing
3) https://drive.google.com/file/d/1077-P9NTbMba1rGJqJ3bI1ly1Cp4qYc-/view?usp=sharing
4) https://drive.google.com/file/d/1zAVMVAAfnivmNB4NV21YIAsSX-6wVHIs/view?usp=sharing

I don't see anything you did wrong.

The things you have to watch is if you pump it into closed cavities or around doors and windows it can put a lot of pressure and bow things out. Keep it away from really hot things.

Sealing things up will save you a lot of money.

Good Luck.

For the most part it looks fine.

Don't use it for cracks in masonry- it won't always adhere well or seal correctly, but for sealing the foundation sill to the foundation it's fine.

Avoid using it to seal gaps to potentially high-temp vents (dryer vents, exhuast vents to combustion appliances, etc), since it's operating temperature range on the high end is limited, and it burns quite nicely once it gets going.

Most of the offgassing is during the curing period, which can take a long time if installed on substrates that were below the specified application temperature range or if there wasn't sufficient water available. A pro-trick is to heat up the surfaced being sealed with space heater (or heat gun/hair dryer) ahead of time, and apply a shot of water with a mister just prior to installing the foam. The water improves adhesion, and increases the expansion volume too. It doesn't hurt to hit it with a mister after the fact either- even a day or two later can make a difference if it's really cold.