You should install the backer board over the tub flange for better water drainage. The backer board or cement board
Cement board
A cement board is a combination of cement and reinforcing fibers formed into 4 foot by 8 foot sheets (or 3 foot by 5 foot sheets), 1/4 to 1/2 inch thick that are typically used as a tile backing board. Cement board can be nailed or screwed to wood or steel studs to create a substrate for vert…
How to install cement board around a tub?
Tools Required For The Installation
- Determine The Location Of The Cement Board. The very first thing you need to do is identify the location of the installation. ...
- Choose The Correct Joint Tape And Screws. The cement board requires the same supplies for installation as drywall. ...
- Install The Cement Board. You need to install the cement board now. ...
- Final Installation. ...
How to install hardibacker around tub?
Step by Step Guide on How to Install HardieBacker Board Around Bathtub
- Measure the Board. Measure the circumference of your bathtub accurately and cut a piece of HardieBacker board with a Carbide-tipped blades/knife; you can use a sharp utility knife ...
- Apply Adhesive for Placed. Apply temporary adhesive around the perimeter of your bathtub wall. ...
- Drill Screws Into the Board. ...
- Apply Mortar and Glass Fiber Tape. ...
How to cut cement board around a toilet flange?
How to Cut Cement Board Around a Toilet Flange Measure the size and location of the toilet flange. Create a homemade cutter by inserting one of the screws close to the end of the piece of wood and screw it all the way through the center point on the cement board .
What size backer board for installing tile around a tub?
What Size Backer Board for Installing Tile Around a Tub?
- Length and Width. While tub sizes vary, the vast majority are approximately 5 feet long and less than 3 feet wide. ...
- Cement Board Thickness. Cement backer board comes in two standard thicknesses, 1/2 inch and 1/4 inch. ...
- Fiber Cement Board Thickness. Fiber cement board is the other common type of cementitious backer board. ...
- Transitioning to Drywall. ...
Does cement board go over the tub lip?
The best approach when installing cement board or other tile backer around a tub is to keep the cement board out of the lip area. Apply it to the wall with the bottom edge about 1/4 in. above the lip of the tub. Then apply a generous amount of thin-set to the bottom bathtub tile and position it 1/8 in.
Do you tile over the tub flange?
By using the right kind of materials and tools, it is possible for you to tile over the tub flange with ease and efficiency.
How do you fill the gap between tub flange and cement board?
How to waterproof the tub flange?Caulk the gap. Probably the simplest way is to caulk the gap with 100% silicone or a urethane sealant. ... Band the flange. Another option is to use some of the waterproof banding material that's available with some of the sheet membrane systems. ... Seal and (mesh) tape the seam.
Do you put cement board behind a tub surround?
Install cement board or an equivalent moisture-resistant backing material on walls behind tub and shower enclosures composed of tile or panel assemblies with caulked joints. Don't use paper-faced backer board, i.e., paper-faced drywall, behind seamed tub and shower enclosures.
Does Backerboard go over tub flange?
The backer board should overlap the tub flange so the tile has a stable backing to attach to. This requires shimming the backer board out from the studs so the wall is plumb. There should be a 1/4" gap between the tub ledge and the backer board.
Does drywall go over tub flange?
You can bring sheetrock right down to the flange just like in the picture as long as you aren't going to tile over it. I would suggest using sheetrock over backer board on surfaces which you intend to paint.
Do you leave gaps between cement board?
Stagger all HardieBacker cement board joints. Do not align with subfloor joints. Never allow all four corners of boards to meet at one point. We recommend an 1/8 in gap between board edges.
How do you cover a shower flange?
You could fill the gap between the flange and the drywall with hot mud and hope it adheres to the caulk well enough for years' worth of showers and baths, then cover it with mesh tape. You could go through the labor-intensive, time-consuming process of furring your studs before hanging the drywall.
Does cement board need an expansion gap?
Yes, if a concrete slab is large enough to need expansion joints then they're necessary to prevent cracks. As concrete expands and contracts it needs room to move.
How do you drywall a tub flange?
1:035:44How to install drywall over a tub or shower flange - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd then as the tub flange can flares out away from the wall. I'm going to change it down to aMoreAnd then as the tub flange can flares out away from the wall. I'm going to change it down to a quarter inch piece of sheetrock. I've inserted these little shims. So that it's closer to a quarter inch.
Does a tub surround need a vapor barrier?
Moisture barriers stop that water or vapor from getting any farther and potentially rotting your studs, the drywall or greenboard installed behind the enclosure. They are required beneath your shower pan and behind your shower walls.
Do you need a membrane behind cement board?
If it's a cement board, you need a vapor barrier, because cement retains moisture, which means the wood next to it is always damp.
Does toilet flange need to be flush with tile?
Installing A Toilet Flange. To be flush with the floor means to be even with the tile. There has been a lot of debate about the proper installation of a toilet flange, but it comes down to this - toilet flanges need to be above tile to prevent leaking and rocking of the toilet.
How do you cover a shower flange?
You could fill the gap between the flange and the drywall with hot mud and hope it adheres to the caulk well enough for years' worth of showers and baths, then cover it with mesh tape. You could go through the labor-intensive, time-consuming process of furring your studs before hanging the drywall.
Can you tile above a tub surround?
For a tub surround only, install the backerboard and tile at least 12 inches above the tub. For a high-end look, take the tile all the way to the ceiling. When tiling around a tub, mark the first layout line at the vertical edge of the tile next to the tub.
Do you grout where the tub meets the tile?
Since you are joining two different materials together, you should use caulk in the space where the floor tile and tub meet. Grout is not flexible, so it's not the best material for the job, while caulk allows for movement and also provides a better sealant.
What is a shim as required for a prefabricated shower?
Every tile detail for a prefabricated tub / shower receptor states " shim as required " to allow wallboard to pass flange. B430-18, B425-18, B419-18, B412-18. Stop the board above and you now have 2 options. 1) Adhere tile to wallboard and do not adhere to the tub flange. Leaving lower portion of tile floating.
Can cement board touch tub?
The only thing everyone seems to finally agree on, is to never allow the cement board to touch the main part of the tub, where water can get wicked up into it.
Can you disguise tile trim?
It will if you notch the studs. Or use the right tile trim to disguise it. It's simple, really.
How many screws do I need to backer a board?
Screw in backer board using roofing nails and approved screws. First every piece should have 6-8 screws. They are a pain to get flush so use roofing nails for the rest (need at least 1 1/4 inch). Put up your alkali resistant mesh tape on all backer to backer seams (gray mesh sold near backer boards at the big box).
Is cement board the same as flange?
You cement board is on the same plane as the flange. It is thicker so it ends up hanging over. Tip - If you are using cement board by itself I would strongly suggest using 1/2 inch. Also I am a strong supporter of hardibacker since it doesn't allow water through or hold water.
Cement Board Detail
The best approach when installing cement board or other tile backer around a tub is to keep the cement board out of the lip area. Apply it to the wall with the bottom edge about 1/4 in. above the lip of the tub. Then apply a generous amount of thin-set to the bottom bathtub tile and position it 1/8 in. above the tub.
What is Backer Board?
Cement backer board is used as a sub-surface for tiling, usually for showers or bathtubs. Backer boars are generally placed against plywood or OSB board. This treatment is unnecessary if there is already cement backing.
How big is the gap between a tub and apron?
The gap between the taller plywood and the tub is 1/4″ to 1/8″ at the edges of the apron but as big as 1/2″ in the middle. So that gap is 1/2″ wide and 1/4″ deep throughout the center portion, not including the 1/8″ gap between the 2 plywood sheets, which seems too big to fill with sealant to keep the ditra supported.
How to spread sealant smooth across mesh tape?
Using a small putty knife spread the sealant smooth across the mesh tape. The mesh tape makes me feel a little better about bridging that seam.
Why don't you use mesh tape with silicone?
The reason that I don’t recommend the mesh tape with step one (silicone) is that the silicone will act as a bond breaker to thinset if it’s smeared over the surface.
Can you use urethane to waterproof a gap?
I find that it works best to apply the liquid waterproofing membrane first, let it dry, and then use the urethane across the gap. The urethane will stick to the waterproofing but the waterproofing won’t stick as well to the urethane. You could just waterproof all the way down and use fabric like you mentioned.