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