How do you fill gaps in cement board?
How do you fill gaps in cement board?
Use nails or screws as temporary spacers to create a 1/8-in. gap between sheets of cement board. When you squeeze the thin-set mortar into this gap, it will lock the two sheets together and strengthen the seam. Finally, leave extra clearance around each piece by deducting about 1/4 in.
Can you use joint compound on cement board?
Joint compound and fiberglass mesh tape are the best products to use when sealing the seams where cement board and drywall meet. These seams are usually at the edge of a shower or bathtub area that is exposed to water.
Do I have to tape the joints on cement board?
The thinset and mesh tape are to strengthen the seams. If you are going to tile over the cement board, you should tape the seams. This should not be that difficult. Pack in thinset, lay on the tape, and flat-knife to get it set in.
What do you use to fill durock joints?
Cut fiberglass mesh tape to fit in a single layer over every joint where the panels meet, but do not overlap the tape. It’s OK if it’s an inch or two short in spots. The tape is self-adhesive and will stick to the Durock panels. Press and smooth the tape firmly in place.
Do you caulk Hardie board joints?
James Hardie DOES NOT recommend using caulk or “H”-jointers for the butt joints of HardiePlank® siding with ColorPlus® technology. James Hardie also DOES NOT recommend applying caulk to the horizontal overlap between siding planks (see Figure 2).
Can you spackle and paint cement board?
It is recommended not to paint cement boards unless they have been thoroughly cleaned, or if they have adhesion problems. The pores in fibrous cement boards, unlike standard cement, absorb the adhesives within the paint, making the finish much more durable than that of standard cement.
Can you use joint compound on durock?
Durock Cement Boards are a type of drywall reinforced with cement for a harder surface. This type of wall material can be finished just like ordinary drywall, using joint tape and joint compound.
How do you fill holes in Hardie board?
The James Hardie company, makers of HardiePlank, recommends the use of a cement patch product made of an acrylic mortar compound for patching their siding products. Acrylic mortar compound can be found at most home improvement retailers and hardware stores under various brand and trade names.