Apply a subfloor sealer.
Sealant for chipboard flooring.
Bathroom flooring grade chipboard usuaully with a faint green stain will not rot when it gets wet but it will probably still soak up piss and smell.
Hardie doesn t add strength to the floor as hardie recommend via a formula a maximum allowable deflection to allow hardie to be used on the floor.
Set pva is water soluble so that won t work.
Seal the floor using granfix acrylic bonding agent and allow it to dry.
Let the sealer dry thoroughly.
Fix your tiles using granfix ultimateflex adhesive.
I would have ideally liked to have had proper ptg boards but as i only had 1 day i had to get the bathroom fitter to fit it with crappy chipboard flooring again.
What is the best way to waterproof chipboard flooring.
Chipboard fails when it is wet and stays wet.
Grout with granfix maxigrout flexible in your choice of colour.
Abrade sand the floor to remove wax dirt etc especially with green chipboard.
Lay the pieces in the room according to your sketch on graph paper.
Apply sealant with a paint brush to all sheets of the particle board on the floor making sure to have even coverage of the face on each sheet.
My bathroom has been completely refurbished and installed the chipboard floor extremely rotten so was replaced with chipboard.
The best floor sealer for pet urine is a stain blocking primer such as kilz 3 premium interior exterior primer which not only blocks stains and odors but also contains a mildewcide.
What you may.
Any all purpose oil or water based stain blocking primer will work especially if you apply two or three coats.
Is the aim to handle bad aim or a potentially leaking toilet.