AboutChris Expertise 20+ years flooring installation ...carpet,wood,tile and vinyl. Residential and commercial. I do not sell the products , just install what ever the shop / customer has purchased. I actually love seeing the finished project completed and it gives me great satisfaction to help others acheive that goal. If I don't know the answer I will say so, and then I will recommend another expert for you. I may even research the subject and answer to the best of my ability ...including links to my sources.
I wish you all success
Chris
Experience 20 years as an independant contractor
Education/Credentials H.S. diploma
A.S. agriculture Mt San Antonio JR. College
Past/Present Clients Gene Bonas and Kevin Churnock Inc.
Sheward&Son&Sons
Century 21
Forte Const.
Famous Footwear
BOSE Corporation
Homebodies General Contractor
Perry Floors, Tri Cord Flooring
T.J.'S Supplies
I asked a while ago about refinishing hardwood which had been badly damaged by an improper install of tile over it. My wife has decided she wants tile in place of the hardwood and I am getting the stuff together to do the job.
I ran into a question, though, because I have only ever put tile down over concrete and this will be over a wooden subfloor. I want to make sure I get a strong enough and flat enough floor to allow for the tile to work.
Could you take a quick look at what my plan is for the floor and let me know if you think it would be enough...?
Top layer - 12" square porcelain tile
1/4" Hardibacker (set in thinset)
1/2" CDX ply (added new)
1/2" CDX ply
The area is about 9 feet deep by around 10 feet wide. The joists below are 2x8's which were 16" on center. As part of the floor leveling and strengthening, they will be sistered with equivalent 2x8 stock making them about 14.5" OC.
Could you just tell me if this sounds like a decent floor to put the tile down on?
I hope I've provided enough detail, but if not, please let me know.
Thanks again!
Mark
Answer Hello Mark,
Welcome back. that truly sounds good. More than adequate !
When you mention the 2 layers of 1/2" ply, why two? And what is your reasoning to add sister joists. Is the floor really going to be leveled by adding that extra lumber? Let me steer you to a deflection calculator that I use for tile...to determine if the underlying floor is strong enough.
This handy calculator will take into consideration the joists ... the length and span and type of material ... so far it doesn't look like it considers double plywood.
Even without the joist sistering your floor is strong enough for ceramic tile.
