Replies

1. 
   dovetail97128 | Mar 06, 2007 09:03am | #1

   Plaster

2. 
   Jer | Mar 06, 2007 02:24pm | #2

   make sure you tape the cracks.

3. 
   scottthebuilder | Mar 06, 2007 03:32pm | #3

   We see alot of this button board or "Beaver" board. We use the following method to repair and it has proven superior to tape and plaster.

   1. Scrath out cracks and blow out any loose debris.
   2. Fill void with a tight pull of Vulkem or Sika smooth poly sealant.
   3. Let sealant dry over night.,
   4. Pull durabond joint compound over crack and caulking in 3 progressively larger layers with drying time between. (Just like a new joint)
   5. texture if needed and paint.

   If the surface is chalky you have to use a masonry sealer to start after the scratching.

   I am looking up at an undetectable repair that I did in 1990 on my ceiling using this method.

   Scott

4. 
   Woody78 | Mar 06, 2007 05:14pm | #4

   After removing any loose plaster and scraping out the cracks etc.

   - Use plaster washers to screw any spongey areas in to the studs.

   - 1st coat of Durabond. Leave low and dont waste time making pretty.

   -Knock down high spots w/ your 10" knife. Do a 2nd coat w/ either Durabond or joint compoud. Pay attention here, Durabond sets like a rock, you will not be able to sand it down.

   - Sand if needed. Final coat of joint compound. then sand and paint.

   Many happy repairs!!