Freddy wrote:Well.. well... yes, it has to come up, but after that, let's talk.
You are preparing the surface to install ceramic tile? You mentioned tile so I assume it's ceramic, but if it's vinyl or wood, you can ignore what I have to say. Ceramic tile should have a minimum of 1 1/4" of underlayment. (usually 3/4" plywood, followed with 1/2" plywood) If durarock is used on the floor, it would go on top of that. Any less than 1 1/4" of subfloor and the ceramic will eventually loose it's mortar from flex. Durarock has no sheer value (no structural strength, it is for waterproofing and/or for making a flat surface.) Also, on a floor Durarock calls for either an absolutely flat surface to adhere to, or a skim coat of your favorite filler before it goes down. Even a small air space will allow the durarock to crack and the tile along with it.
If the total thickness is an issue, before I used durarock on the floor, I'd use 1/2" plywood.
Nevercold wrote:Would a boroscope inspection be of any help???
They are available relatively cheap, or numerous trades have them. Pest control, sewer service etc. One small hole between joists is all you need to see all. Easy patch after inspection. You may be able to rent one also!
Just remember that durarock is not counted in the thickness. I'd think being an eighth shy would be OK... better than being 1/4 or 1/2 shy.Flyer5 wrote:Will an 1/8 " matter ?
billw wrote:If the rock is already in thinset why not just make him pull all of the nails and replace them with screws? That seems to be the simplest solution. Pulling the rock up is going to leave thinset on the floor or pull up the first ply of the plywood. You're looking at making a real mess. He should be able to get the nails out without to much damage. I'm sure he's going to crater around some of the nails. He can patch that with thinset just like you cover screws in sheetrock. That should eliminate the possibility of rubbing through your pex and it gives him a viable way out of his screw up. He may have a man pulling nails most of the day but he won't be out material and you'll have what you ordered.