As with any other backer board and tile underlayment, you will need to create a surface that is loadbearing, true and flat, as well as plumb and squared from floor to ceiling.
Unfortunately , many 2x4 wood framing studs are not in a perfect condition or framed perfectly fine.
It is important to deal with the deficiencies of framing prior to installing wedi panel or any other tile backer board. If you choose not to, these deficiencies will either show later, when the corrections are done in the tile surface layer or the backer boards cannot be installed tightly fitted below the tile.
Here are safe and good ways to ensure proper framing before installation of wedi building panel:
- Use wood furring strips nailed to studs, either along entire studs or parts of studs
- Sister studs, replace studs, add cross blocking
Here are methods NOT to use, without limitation:
- Wet or Dry shimming with sealants, caulks, or other types of adhesives (cement thinset mortars or other types including general construction adhesives)
wedi Building panel must be mechanically affixed to framing which provides the properties needed to safely support the building panels. Only wedi fastener systems are used.