Best answer
But for a tile backsplash, if your wall is good and plumb, without any major ridges or problems, you don't always need to use a backer board, often you can just apply thinset to the walls and put your tiles in place.
Do I need to seal cement board before tiling?
Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if sealant is used. ... However, if you choose to use concrete backerboard, which is much stronger and more durable than gypsum board, a water vapor membrane must be placed underneath it or a sealant applied on top of it.
Do I need a vapor barrier behind cement board in shower?
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 to waterproof cement board before tiling?
So, if you're looking for durability and strength, concrete backer-board will probably be your choice. First, you should provide a waterproof/resistant membrane against the wood studs before installing the concrete backer-board to protect the wood studs from moisture absorbed through the backer-board.
Do you need to prime cement board before tiling?
Do I need to prime HardieBacker® board before I tile onto it? No. HardieBacker tile backerboard is ready to tile once installed, just wipe down with a damp sponge to remove any dust prior to tiling.
How many bags of cement do I need for a 2 bedroom house?
40 bags
How many bags of cement do I need for 1000 bricks?
3 bags cementTo lay 1000 bricks = 3 bags cement + 0.6 cu. m. sand.
How much sand and cement do I need for brickwork?
1:6 ratio of mortar for brickwork which means cement:sand = 1 part of cement and 6 parts of sand.
Do you need to waterproof cement board in a shower?
Cement board is not waterproof. Hardibacker is not waterproof. Tile and grout are not waterproof. Cement board will not fall apart when exposed to water.
What plaster do I use for skimming?
Multifinish is ideal for (indeed, is manufactured for) using as a finishing plaster when there are a variety of backing surfaces to be covered. Board Finish: Board finish plaster is used on surfaces with low – medium suction. Plasterboard and Dry-Coat plaster will accept Board Finish well.
How many bags of concrete do I need for a shed base?
Cement wise i would pour the base at 5-1 so you'll need maybe 7 bags of cement. If you still want to pay a fortune to buy your ballast in small bags get the 25kg ones and you will need approx 30 bags.
Related Question Answers

Adam Bellaire
ProfessorDo I need to waterproof cement board in shower?
Here's what the TCNA handbook has to say about the matter: “A waterproof membrane or vapor retarder membrane must be specified to prevent moisture intrusion and protect adjacent building materials.” ~B412 Bathtub or shower with prefabricated receptor. Cement board or Fiber-cement board.

desertnaut
ProfessorHow much cement do I need for a brick wall?
Quantity of cement, Sand or Mortar Required for Brickwork: 1:6 ratio of cement mortar is usually used for brickwork.

Kyle Delaney
ProfessorHow much sand and cement do I need for 100 blocks?
You will need 1000 lbs of sand for the mortar for those 100 blocks. The Recipe for Mortar sand mix will be 1 Part Mortar to 2-1/2 Parts Sand.

user3142695
ProfessorHow much sand and cement do I need for 1000 blocks?
For laying bricks and blocks in normal applications (SABS Class II) To lay 1000 bricks = 3 bags cement + 0.6 cu. m. sand.

Rob W
ProfessorDo you need plastic behind cement board?
Their online instructions/diagrams show no use of a vapor barrier. You should, so that any moisture that gets behind the cement board runs into the tub or shower instead of into your wall cavity (causing rot or mold/mildew).

Lundin
ProfessionalCan I use deck screws for cement board?
It's best to use the cement board screw, but a deck screw will do just fine. ... Use screws designed for cement board like Rock-On screws. They start easier than drywall screws in CBUs. They're easier to use, don't rust as easily and hold better.

David Browne - Microsoft
ProfessionalCan I use drywall mesh tape for cement board?
No. The Mold-X10 fiberglass mesh tape is made for drywall seams and intended to be coated with joint compound. FibaTape's Cement Board Tape is the product for cement board. The alkali-resistant coating protects the fiberglass from degradation that can occur with thin-set mortar.

Eugene Yarmash
ProfessionalDo you need a vapor barrier behind cement board?
You still need a vapor barrier with cement board, although in this case the barrier can go behind the board. Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall.

Billy ONeal
ProfessionalDo you need green board behind cement board?
Because cement board can be used either for floors or walls, the surface below the cement board will vary: ... In such wet areas, never install cement board directly over drywall or green board. Instead, first, remove the existing surface material, then install the cement board over the studs and membrane, as applicable.

Jacques René Mesrine
ProfessionalDo you need to put a vapor barrier behind cement board?
You should NOT place a vapor barrier BEHIND the backer board. Where, pray tell, would any such collected vapor/water go? Answer:There's nowhere proper for such moisture to egress. The current best practice is to place waterproofing OVER the backetboard and just UNDER the tile.

prasad_
UserCan I use 1/4 cement board on floors?
Both 1/4- and1/2-inch cement board are appropriate for floors. To install cement board on floors, cement board manufacturers mandate a 5/8-inch plywood subfloor or OSB underlayment.

humazed
UserCan you glue stone veneer to cement board?
What can I put stone veneer on for an interior application? For interior applications, stone veneer can be installed over cement board, drywall, and all of the above.

CL.
UserCan you put cement over silicone?
Yes, silicone will stick to cement board.
In fact I highly recommend that you use cement board such as 'Durock' as your backer board.
Use proper screws.
Such as the specific cement board screw..

nemo
UserCan you use cement board as a subfloor instead of plywood?
No. You will need actual subfloor (3/4 osb or ply) below the cement board to support it. And you'll only need cement board if you're laying tile. Cement board alone will be far to soft, among other problems.

Paul Hodges
UserDo I have to use cement board under Wall Tile?
In short, tile and grout are not inherently waterproof. ... Cement backer board is often used as a tile base on plywood or OSB subfloor. Cement backer board on concrete as a subfloor or underlayment is usually not recommended or needed. In most cases, you can apply tile directly to the concrete.

maytham-ɯɐɥʇʎɐɯ
GuestDo I need cement board for stone veneer?
Natural stone veneer is heavy and should not be installed over drywall; cement backerboard or masonry applications are recommended.

Sinatr
GuestDo I need to prime cement board before tiling?
Do I need to prime HardieBacker® board before I tile onto it? No. HardieBacker tile backerboard is ready to tile once installed, just wipe down with a damp sponge to remove any dust prior to tiling.

Renshaw
GuestDo you have to replace cement board under tile?
Undamaged cement backer board does not need to be replaced.
...
It is difficult to remove tile from a cement backer board, and even more difficult to avoid damaging the board in the process.
Since backer board is relatively inexpensive, it's not normally worth the time and labor it would take to remove the tile to save it..

chief7
GuestDo you need plywood under cement board?
The Surface Below the Cement Board Flooring: For ceramic tile floors, the cement board usually rests on a plywood subfloor (minimum 5/8-inch-thick exterior-grade plywood or OSB). ... In such wet areas, never install cement board directly over drywall or green board.

Sky
GuestDo you need Thinset under cement board?
Not only is thinset a critical component underneath cement board but the other critical component is the fasteners.
And you won't have the fasteners if you are trying to install it over concrete..

pythonic833
GuestDo you need vapor barrier 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.

Mitch Wheat
GuestDoes cement backer board burn?
The backer board will burn out eventually. You also need to build an insulated heat riser for best performance. A bell around/over the heat riser cannot be cement board as the heat in parts of that will be much too intense.

DJanssens
GuestDoes cement board need to be sealed?
While you don't always need to seal backer board, it sometimes make sense to do so. If you are installing backer board in an area that will be subject to a great amount of moisture, like in a shower, then it makes sense to put a waterproofing sealer on it.

Keith Thompson
GuestDoes silicone stick to cement board?
Yes, silicone will stick to cement board. In fact I highly recommend that you use cement board such as 'Durock' as your backer board. Use proper screws. Such as the specific cement board screw.30 Sep 2015

Muhammad Numan
GuestCan I use cement board for shower floor?
Do not use cement board on its own. Your shower will leak and you will be tearing it out within a year.

Mickael Maison
GuestWhat do I need to make cement pots?
DIY Cement PlanterPortland Cement.5 Gallon Bucket (for mixing)Canola Oil.Plastic Containers or Paper Cartons.Polyethylene Sheet.Disposable Gloves.Stir Sticks.Potted Plants.Jan 12, 2016

Lekensteyn
GuestWhat thickness cement board should I use?
Half-inch cement backer board is ideal for most tiling jobs, including walls, floors, countertops, and ceilings.
For flooring, the backer board should be installed over a 5/8-inch thick OSB or plywood base..

Pablo Fernandez
GuestWhat Thinset do I use for cement board?
Use thin-set mortar when installing cement backerboard. Thin-set dries slowly, allowing you to fix and readjust backerboard sheets as needed. With the smooth side of a 1/4-inch notched trowel, spread enough mortar for one sheet.

Walker
GuestWill silicone adhere to cement board?
Yes, silicone will stick to cement board. In fact I highly recommend that you use cement board such as 'Durock' as your backer board. Use proper screws.

blue112
GuestShould I plaster before fitting kitchen?
Its easier in the long run to plaster before the kitchen goes in, even though some areas might be covered with the units. But if this is not possible,it can be plastered afterwards, but you would need to take great care not to damage the units.

Tapas Bose
GuestDo I need cement board for tile floor?
If you're working over a wood subfloor, cement board is the right choice for your tile base. No matter what you're told at a home center, it's not a good idea to install tile directly over plywood, especially in a damp area like a bathroom.

Alex Koshelev
GuestDo you put cement board under bathtub?
You don't need any cement board under the tub. It is far more important to have a sturdy layer of ply under the tub.

Eduardo Maroto Campos
GuestHow do you anchor a kitchen island to a concrete floor?
How do you attach a kitchen island to a concrete floor?Mark off the cabinet installation area on the floor with a pencil.Cut two 2-by-4 boards to 2/3 the width of the base cabinets, using a table saw.Place one of the boards you cut 3/4 inch inside the marks you made.Drill three pilot holes into the board, and then set it back in place along the line with the X.Mar 6, 2020

Havenard
GuestShould I put plastic behind cement board?
No plastic sheeting goes behind the cement board. A liquid waterproofing membrane, such as RedGard or Hydro Ban, is applied to the cement board and allowed to cure. Then, tile is installed over the membrane.

SuperNova
GuestDoes cement board in shower need waterproofing?
“A waterproof membrane or vapor retarder membrane must be specified to prevent moisture intrusion and protect adjacent building materials.” ~B412 Bathtub or shower with prefabricated receptor. Cement board or Fiber-cement board. Ceramic Tile. ... Consult local building code for moisture barrier requirements.”

Dax Feliz
GuestCan I reuse cement backer board?
Undamaged cement backer board does not need to be replaced. If tile has not been attached directly to the backer board, and it has not been dented or punctured, it can be reused without any special preparation.

Maheshvirus
GuestDo I need plywood under cement board?
Because cement board can be used either for floors or walls, the surface below the cement board will vary: Flooring: For ceramic tile floors, the cement board usually rests on a plywood subfloor (minimum 5/8-inch-thick exterior-grade plywood or OSB).

jfaccioni
GuestShould I put cement board under tub?
You don't need any cement board under the tub. It is far more important to have a sturdy layer of ply under the tub.

Manuelest
GuestShould I put Thinset under cement board?
Embed the cement board in latex-modified thin-set mortar The main reason for using thin-set between the cement board and the subfloor isn't as much for bonding as it is for even, void-free cement board support throughout the floor. ... Then spread thinset mortar with the flat side of a 1/4-in.

rajashekar
GuestShould you put a vapor barrier behind cement board?
You still need a vapor barrier with cement board, although in this case the barrier can go behind the board. Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall.

itsaboutcode
GuestHow thin can I make a concrete countertop?
Glass Fiber Reinforced Concrete can go as thin as 3/4″ for the same kitchen countertop slabs that would need to be 1.5″ thick for precast.
This instantly cuts the weight in half..

Bassam Alugili
GuestCan I use Kerdi band on cement board?
First Kerdi can be installed on drywall or cement board. However if installed on drywall it is only protecting one side.

weston
GuestDo I need cement board for shower ceiling?
It can be, but it's not really necessary. You can tile directly to drywall in any dry area. If your doors go all the way to the ceiling, you might consider cbu verses any kind of drywall on the ceiling, otherwise, it is considered a dry area.

Prasanth Bendra
GuestHow much cement and sand do I need for floor tiles?
Mortar calculation for tile flooring We need 1.5 m3 volume of wet cement mortar that means, we need this much volume after adding water to cement and sand mix. Dry volume of mortar is considered as 25% of more of wet volume.

Steef
GuestDo I need cement board under floor tile?
If you're working over a wood subfloor, cement board is the right choice for your tile base. ... Because plywood expands and contracts beneath the ceramic tile, grout and tile failure (loose tiles and cracked, crumbling grout) is just a matter of time.

temporary_user_name
GuestDo you need to waterproof cement board in shower?
Cement board is not waterproof. Hardibacker is not waterproof. Tile and grout are not waterproof. Cement board will not fall apart when exposed to water.

Ronak Shah
GuestDo you need to use thinset under cement board?
Not only is thinset a critical component underneath cement board but the other critical component is the fasteners. And you won't have the fasteners if you are trying to install it over concrete.

Metroids
GuestHow many bags of cement do I need for a shower pan?
Building a mud shower is really hard work. This one required 300 lbs (dry) of cement and sand. Another 300 lbs of cement board for the walls. More hundreds of lbs of tile, thinset and grout.

Yevhen Laichenkov
GuestHow many bags of plaster do I need for a room?
Well if you go by the spec a bag of Multi and Board finish will cover 10.25-75 m2 at a coverage of 2mm on Plaster board. As the manufacturer will tell you this is, of course, just a guide.

Marco
GuestHow much sand and cement do I need for 1000 bricks?
To lay 1000 bricks = 3 bags cement + 0.6 cu. m. sand. 1 Bag of cement to 3 wheelbarrows of building sand.