Your floor is probably way too thick (must be) with the backer screw to truly penetrate into your floor joist. Otherwise, or merely to be safe, never spot screws into the area over the floor joists. The plywood or chipboard which makes up your floor will increase and agreement at a distinct rate and, more than most likely, in numerous directions than your joists.
A few variables to think about - Hearths or extensions are commonly Little - Consequently deflection is much less of a difficulty. There is a deflection calculator about the Johnbridge tile web page pointed out before Within this thread, If I punch in my floor's specs for the entire place, there's no WAY I could place down tiles without totally tearing the present floor out, sistering the many joists, upgrading the subfloor etc.
Hence the help below my venture is quite exceptional to what might normally be. There is a concrete block stem wall around the skin wall on the bay alcove. Then about 3 feet inward is the first exterior stem wall that supports the joists just like a fulcrum in the middle.
Roger Screw in which the joists are usually not. It might go through the plywood, just not screwed in the joists them selves.
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You need to trowel thinset on to your floor. I simply cannot overemphasize this (perfectly, I could however, you’d get sick of hearing it). This move is very important for a suitable tile installation. The thinset isn't intended to ‘stick down’, adhere, or if not connect your backerboard on your subfloor.
Identical to taping and mudding drywall. This could make your floor a person massive monolithic composition and lock all of it together. You desire alkali resistant tape so it is not going to stop working because of chemical compounds existing in many thinsets. I do not need photos of the for the reason that I do it as I established tile.
If almost everything is butted restricted along with your wall expands in the place guess what transpires. That’s right, your dog may burst into flames and nobody wants that! It may also trigger your floor to pop loose and possibly ‘tent’ or peak at the seams.
It is essential to to start with unfold slender set on the floor ahead of placing the cement board on the floor. Then you definitely connect the cement board with screws.
Perpendicular for the joists There is certainly dimensional lumber at no less than sixteen” on Middle so There is certainly assist working the two Instructions just like a checkerboard beneath your entire spot that can be tiled.
I did cut out the old ½” subfloor and five/eight” flooring to interchange it with ¾” tongue and groove nailed directly to the joists Hence the hearth could well be below carpet level once tiled so I am not stumping my toes.... LOL
Maury P Vargas Hello Roger, Once i fall a coin or screw on top of the hardibacker in between the screw heads (vacant region) I listen to a hollow seem. Is the fact that for the reason that 130 screws for each board is simply too couple of? I are unable to thinset more than the 1/4” trowel.
2nd, there is an write-up from the HearthWiki on developing a hearth extension - I wrote a superb check here little bit of it myself as the results of study on what I required to do to increase my own hearth...
Previous concern assure: can I put some thing NOT Tar paper amongst the plywood and thinset,, in advance of screwing the hardi back on? Just in order that Later on I by some means ought to take a peek or clear away solely, I received’t rip levels of plywood subfloor: like rolls of the plastic bag design quality form? I am aware you Make points to never rip them off, but just curious if that would create a situation where by the thinset solidified beneath would “float” between screws. Sorry for dumb issues it’s my household just want to be sure I’m carrying out factors the “Elf” way. Not an engineer, but merely a dad who likes to read lots. I’m an illustrator so when you’d similar to a a token of my appreciation I'm able to draw a cartoon of your Elf or by yourself or what ever you would like! Allow me to know, You may have my e-mail from “get information subscription”