Use our guide on strengthening a wooden floor for tiling to do this.
Chipboard sealer before floor glue.
You can do this either by covering with a 10mm layer of weberfloor flex 6mm tile backer board or 15mm plywood.
Fix your tiles using granfix ultimateflex adhesive.
Diy advice please sealing a chipboard floor.
Seal the particleboard well with a shellac sealer.
Apply the adhesive directly to the groove and shoulder of the profile joint.
If your floor passes the two fat men test proceed as follows.
We have a chipboard particle board floor i e.
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Abrade sand the floor to remove wax dirt etc especially with green chipboard.
Let the sealer dry according to the manufacturer s instructions.
I want to seal it before laying down self adhesive vinyl tiles.
Grout with granfix maxigrout flexible in your choice of colour.
What you may need for the job.
Seal the floor using granfix acrylic bonding agent and allow it to dry.
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.
Just be careful when the boards are butted tightly together as the adhesive is likely to foam out of the board joint.
Roll it on with a paint roller and make sure you cover all areas of the board.
Depending on the amount of movement and deflection you may need to strengthen the substrate before tiling.
Ensure the entire joint is bonded and then move on to the next row of joists.