AD1
TF
Hi,
I've been doing alot of research prior to tiling the ground floor of my home, approx 40m2. The structural floor is 18mm Ply and after reading all the horror stories of failed floors I am getting nervous on whether I am looking at failure before I start! I can't find anywhere online a successful tile on ply job, So ... Can it be done?
The floor construction is 4x2 joists, spaced at 400mm centres, levelled and fixed. I have already installed underloor heating, 70mm celotex between joists and 30mm anhydrite screed level with the top of the joists. Then overboarded with 18mm Ply. Ply has been sealed on the underside and edges with SBR and glued and screwed every 150mm with joints finishing on the joists. The biggest room span is 3m and is supported halfway by a small supporting wall, So joists only span 1.5m.
The floor is flat (no more than 3mm over 2m) and very solid. There is no deflection in the floor except 1 board edge about 2ft will move down 2mm if pressed hard (Screed must not of been perfectly level and so left a 2mm void between the screed and ply), I plan to fix this but unsure how? The rest of the floor is very stable with no movement.
I have bought Ditra and Ardex Af200 to bond to ply (3mm V notch trowel) .. then tile 600 x 600 rectified porcelain tile with Ultimate S2 adhesive, 20mm x 10mm round notch trowel, 3mm grout line, Lash levelling clips, and grout with BAL Superflex wide joint with GT1 Admix.
The underfloor heating has been in 1 year already, screed was left 1 month before ply, commissioned correctly and is the heating is working perfectly. I plan to turn it off 48 hours before starting anything.
So my question is, is there anything else I could possibly do to prevent failure? After reading online I'm almost at the point of putting down engineered oak onstead of tiles.
Has anyone successfully tiled on Ply with ufh that has lasted?
Thanks, Adam.
I've been doing alot of research prior to tiling the ground floor of my home, approx 40m2. The structural floor is 18mm Ply and after reading all the horror stories of failed floors I am getting nervous on whether I am looking at failure before I start! I can't find anywhere online a successful tile on ply job, So ... Can it be done?
The floor construction is 4x2 joists, spaced at 400mm centres, levelled and fixed. I have already installed underloor heating, 70mm celotex between joists and 30mm anhydrite screed level with the top of the joists. Then overboarded with 18mm Ply. Ply has been sealed on the underside and edges with SBR and glued and screwed every 150mm with joints finishing on the joists. The biggest room span is 3m and is supported halfway by a small supporting wall, So joists only span 1.5m.
The floor is flat (no more than 3mm over 2m) and very solid. There is no deflection in the floor except 1 board edge about 2ft will move down 2mm if pressed hard (Screed must not of been perfectly level and so left a 2mm void between the screed and ply), I plan to fix this but unsure how? The rest of the floor is very stable with no movement.
I have bought Ditra and Ardex Af200 to bond to ply (3mm V notch trowel) .. then tile 600 x 600 rectified porcelain tile with Ultimate S2 adhesive, 20mm x 10mm round notch trowel, 3mm grout line, Lash levelling clips, and grout with BAL Superflex wide joint with GT1 Admix.
The underfloor heating has been in 1 year already, screed was left 1 month before ply, commissioned correctly and is the heating is working perfectly. I plan to turn it off 48 hours before starting anything.
So my question is, is there anything else I could possibly do to prevent failure? After reading online I'm almost at the point of putting down engineered oak onstead of tiles.
Has anyone successfully tiled on Ply with ufh that has lasted?
Thanks, Adam.
