To correct, Hardi-backer is NOT just for moisture areas, it is used as a fire retardant covering also, instead of plasterboard. Hence the enquiry as to whether it can be skimmed. Just checked Hardi-backer website and yes, it can be skimmed.


Is Hardie backer waterproof? cement backer board is not waterproof,but water cant hurt it,even when soaked in water for months or even years

can you skim over Hardibacker board?

Yes, HardieBacker cement backerboard is suitable for a wide range of paint coatings. We do however recommend that you plaster the board first, to ensure the best possible finish.

Can you tile straight onto Hardibacker? The Hardibacker will be fine to tile straight onto.

can you texture over Hardibacker?

Texture can be applied to HardieBacker board in the same way as drywall.

Do you need to seal Hardie board? To Seal or Not To Seal Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if sealant is used. If you decide to go this route, no sealant will need to be applied on top of the backerboard, as this could trap moisture between the two layers of waterproofing.

can you skim over cement board?

You can't skim finish plaster to a depth of 10mm, the average skim coat is 2-3mm thick you can go slightly thicker but I wouldn't advise more than 5mm. Hardi say you can skim their cement boards but Aquapanel say you must use their own special & probably expensive plaster.

What side of Hardie board faces out? Cement board has a smooth side and a rough side. Face the rough side out if you will be using thin-set mortar adhesive to install the tile but the smooth side out if you will be using latex mastic.

What thickness backer board should I use?

Cement backer board comes in two standard thicknesses, 1/2 inch and 1/4 inch. The industry standard is to use 1/2-inch-thick backer board on wall tile installations, such as a tub surround.

What is Hardie backer board made of? HardieBacker cement board is a tile underlayment made for wet areas like kitchens and bathrooms. This cement-based backer board, made of 90% Portland cement and sand, resists damage from moisture, provides excellent tile adhesion, and is formulated with MoldBlock Technology to protect the board from mold growth.

Can Aquapanel be plastered?

Yes you can plaster straight onto Knauf Aquapanel Interior.. I would suggest that you tape the joint between Knauf Aquapanel and a gypsum board, the suction between the 2 will be different.

Should I tank HardieBacker?

Your backer boards are cement based, your adhesive - powdered one - will be cement based. No need to tank that.

Can Hardie backer board be used in a shower?

But when it comes to getting wet these fiber cement tile backer boards hold up well. They will soak up water but will dry out without losing their form. Because they will absorb moisture there should always be some sort of a moisture barrier when using these tile backer boards in a shower or other wet area.

What is WonderBoard?

WonderBoard is a cement-based backer board mainly used for tiling in wet places. The wet places are mostly bathrooms—specifically, showers and tub surrounds—and the applications tend to be tiling. It is also used for decks, floors, countertops, pools, and hot tubs.

Can you texture and paint cement board?

Not likely. but Hardie backer board's official installation tutorial says it can be finish with paint. Use the backer board on the tiled part, and use the moisture resistant drywall on the rest. It's used in bathrooms everywhere.

How do you finish cement board for painting?

Step 1 - Clean the Area. First, clean the cement surface thoroughly that you want to paint. Step 2 - Let the Area Dry. Before you paint the surface of the board, make sure it's completely dry. Step 3 - Prime the Board. Step 4 - Apply the Paint. Step 5 - Apply Sealant.

Can you plaster over durock?

Note that only two-coat veneer plaster may be used over DUROCK cement board. Leave the surface rough and open for the proper bond of finish coat. Allow the basecoat to set to provide proper suction for the finish coat. IMPERIAL veneer finish is applied as indicated above for a one-coat system.

Can you plaster wedi board?

wedi building boards have a blue core made from CFC-free extruded polystyrene rigid foam. This makes the wedi building board an ideal basis for any type of plaster and tile. wedi building boards can be applied to practically any substrate, are waterproof, insulating, versatile, light and robust.