How to trim underlayment


Old 03-23-08, 09:27 PM
Thread Starter
Join Date: Jan 2008
Location: liberty hill, tx
Posts: 13
How to trim underlayment

I'm installing a click 'n lock floor. I put the recommended plastic foam underlayment/vapor barrier in and per instructions let it extend up about 2 inches around where the baseboards were removed and taped the underlayment that's sticking up with painters tape to the sheet rock before installing the floor.

I'm done now and am ready to reinstall the baseboards.

The question is: are you supposed to leave the underlayment sticking up and install the baseboards over the underlayment that's sticking up and then trim any of the remaining underlayment sticking out over the top of the baseboards ? Or are you supposed to trim off the underlayment that is sticking up all along where the floor meets the walls ?

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Old 03-26-08, 09:05 AM
srickard's Avatar
Join Date: Jul 2007
Location: Dallas, Texas area
Posts: 22
Use a box cutter or similar tool to cut the excess underlayment close to the floor and tuck under the wallboard. You do not want the underlayment between the base board and the wall.

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