If your floor passes the two fat men test proceed as follows.
Chipboard sealer before floor glue.
I want to seal it before laying down self adhesive vinyl tiles.
Depending on the amount of movement and deflection you may need to strengthen the substrate before tiling.
Continuous double bead on each joist where a board spans over it then you glue the groove and top edge of the tongue before knocking together.
This is normal just leave it to dry for a while as this will help enhance the protection of the joint.
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Diy advice please sealing a chipboard floor.
You can do this either by covering with a 10mm layer of weberfloor flex 6mm tile backer board or 15mm plywood.
What you may need for the job.
Strengthening the substrate will decrease the amount of movement associated with timber and non tongue and groove floorboards and chipboard.
Grout with granfix maxigrout flexible in your choice of colour.
We have a chipboard particle board floor i e.
Apply the adhesive directly to the groove and shoulder of the profile joint.
Use our guide on strengthening a wooden floor for tiling to do this.
Seal the particleboard well with a shellac sealer.
Seal the floor using granfix acrylic bonding agent and allow it to dry.
Ensure the entire joint is bonded and then move on to the next row of joists.
Abrade sand the floor to remove wax dirt etc especially with green chipboard.
Check out our range of floor sealing waterproofing products at your local bunnings warehouse.
Fix your tiles using granfix ultimateflex adhesive.