Marmorino Application

The most widely used and versatile plaster - Page 2 of 6

Remodels and old walls
For remodels and older construction, some light texture on the walls is fine, such as orange peel, or even the 1950's 'cottage cheese' look. For thicker texture, you should use three layers of Mormorino instead of two, or "skim coat" with drywall plaster/mud, then sand until the walls are reasonably smooth. Afterwards, you should dust off (clean) and prime the walls with the above-mentioned primers. You can skip priming if the walls are relatively new and are well painted with an eggshell, satin or higher sheen. If the paint is flat, it's not a bad idea to prime, but usually you won't need to.

Remember, for a very textured wall it might be best to use an extra layer of Mormorino instead of drywall mud, because sanding it is very dusty and you also have to prime. Mormorino is less messy and you don't need primer.

Plastering over wallpaper
For wallpaper, we always recommend stripping it. If you are willing to play it less safe; be certain that the wallpaper is firmly attached to the wall before applying plaster over it. Find a corner of the wallpaper and try to strip it dry. If it comes off with ease, is old and peeling, or has several layers it is best to strip it. If the wallpaper is on the ceiling; pay special attention. Mormorino has significant weight after two layers so make very sure that ceiling wallpaper can handle the load. It is always the safest bet to strip the ceiling of any wallpaper. If the wallpaper adheres well to the wall, prime it with an oil-based primer, such as Zinser's or Killz oil based primers (these primers can be messy and hard to clean). Before rolling, brush the primer in and around the edges of the paper, also brush in the seams of the paper. After the next day when the primer has dried, you will notice that some parts of the paper have peeled or bubbled. Cut these areas out with a knife/razor, and re-prime these areas. Prime with a water based primer as mentioned above. Consult your local paint store for further advice.

Masking
Always mask before priming and plastering. Good masking will result in a razor sharp line between the plaster and anything adjacent. When masking, be sure to buy the right tape. Blue tape is the best. Don't use low tack blue tape. It generally falls off trim under its own weight. White tape is too sticky and can either leave a sticky residue on the trim or tear off the paint or varnish to which it sticks. If using white tape, make sure it's not exposed to the sun, otherwise it will really stick to the trim. On remodels, sometimes the wood is very lightly varnished and even blue tape can peel off the finish. In this case, use low tack blue tape. When masking, use a hand masker that applies paper directly to the tape. Mask (stick tape) about 1/16" away from the wall. Make sure when plastering not to get too much on the tape. This will make it difficult to remove the tape later.

MARMORINO APPLICATION CONTINUED
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