How to fix rotting floor boards?

Hello Emily, If it Is rented - call the Landlord! If you own it, call in a builder of trailer homes to come and inspect it and offer a solution that is affordable for you.

i would have them removed. If you have to use scatter rugs until you can replace the flooring.

Remove and replace with 3/4" plywood.

You need to find out why they are rotting and replace the underboard before putting in new flooring.

You need to get air moving around under the trailer. Moisture is rotting your floors.

I replaced my pipes with pex too. Love it. No worries about freezing.

Once pipes are fixed, you will need to rip out the rotted wood and put down new plywood, and then new flooring.

It may be more expensive, but using marine plywood that is made for damp and wet conditions would last longer if there are no leaks found.

You will need to pull the boards up and replace with new ones. Use a pry bar a the job will be easier.

Had this issue all through out our three bed/two bath manufactured home. In days past they used pressed wood, when exposed to water swelled and fell apart. Also, just heavy foot traffic will make them sag. We pulled out all the flooring in bathroom, big mess!! Finally layed 3/4 in plywood through out house, in stages, right over old flooring. No water leaks involved. Easiest solution and has lasted for years.