remove expanding form
Contact the MFGR. of the foam. If the hardwood floor is finished, you'll need to find out if the finish is polyurethane, water-based, or wax. If you can't find out from the MFGR. of the floor, then tell that to the MFGR. of the foam. The more you know about the floor, the better the answer will be from the MFGR. of the foam.
The MFGR. of the foam may suggest you ctc. the MFGR. of the floor for removal instructions too. My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless America!