Any all purpose oil or water based stain blocking primer will work especially if you apply two or three coats.
Sealant for chipboard flooring.
If your floor passes the two fat men test proceed as follows.
Just getting wet from adhesive won t blow it.
Is the aim to handle bad aim or a potentially leaking toilet.
Apply a subfloor sealer.
Abrade sand the floor to remove wax dirt etc especially with green chipboard.
What you may.
Work from one end of the room to the other moving backward as you apply sealant.
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.
What is the best way to waterproof chipboard flooring.
Set pva is water soluble so that won t work.
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.
Fix your tiles using granfix ultimateflex adhesive.
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.
Lay the pieces in the room according to your sketch on graph paper.
Chipboard fails when it is wet and stays wet.
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.
Seal the floor using granfix acrylic bonding agent and allow it to dry.
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.