56 N Forest Rd, Amherst N.Y. 14221

Cell:  697-3560   Shop:  632-7151

Plaster Repair in WNY


This home suffered from many water leaks in their roof.  As well as settlement cracks in the walls and ceilings through out the home.




As you can see the damage was quite extensive.  It was imperative that the roof be repaired before we started work.  Or its a waste of your money and our time.

This next set of photos shows the 'during'  As you look at the photos,  the majority of the finish coat came off with a putty knife.  As with all plaster damage,  the damage you see isn't the damage that has occurred.

The Dark, almost black material, is new basecoat which had to be applied in order to achieve proper thickness of the finish coat.  The orange 'paint' is a bonding agent.  It acts both as a glue, and as a sealer.  It seals the surface of the old plaster so that when you apply the new plaster,  the old plaster doesn't suck all the water out of the new plaster before it has time to set. 

Cracks,  especially in plaster need to be opened up and Veed out.  This allows us to clear away the broken pieces of plaster and put new plaster deep into the crack.  We use fiberglass mesh tape as well which greatly strengthens the joint.


Next is the finish coat of Plaster,  made up by two distinct materials.  Lime, which we mix up in our shop,  this is like a paste material, and is what makes the Plaster of Paris more pliable.  Then the other part, Plaster of Paris, this is the setting agent of the plaster.  You mix these two parts together on site.  Lime is a dangerous product which can cause chemical burns to skin, therefore care must be taken when handling these materials.  Once these two parts are mixed, using a hawk and trowel, you have between 10-15 minutes to apply the material before it goes hard.  You then hand trowel the finish until it goes rock hard,  about 30 minutes.  Once this is done,  if done correctly, the surface will be shiny and extremely smooth.  No sanding required.

When working with real plaster,  you must wait,  7 days prior to painting.  Ideally 28 days, before painting.  However this can be sped up by using an oil base primer such as Kilz, or Sherwin Williams Problock HS. Apply the primer after 7 days.  Once the primer is applied you can immediately apply any top coat you whish,  such as two coats of latex paint.

Any product which claims that a latex based paint can be directly applied to new plaster which hasn't cured for 28 days, is false.


The repairs performed in this home took 1 week to complete. Once the removal of the damaged plaster was complete,  there is very little dust, and mess.

Cell:  697-3560   Shop:  632-7151