Watch Rory Brennan on This Old House install a plaster medallion with Norm Abram


Program #2921
Roxbury Project 5 of 10
Saturday, February 27, 2010 at 1:30pm ET (check local listings)

Despite the bitter cold, landscape contractor Roger Cook works with a group of students from YouthBuild Boston to spread soil and put down sod in the backyard. Meanwhile, fence contractor Mike McLaughlin and his crew install a PVC privacy fence along the perimeter of the yard. Inside, master carpenter Norm Abram and lead carpenter Colin Paterson are adding some period charm to the bay window area by installing custom casings and paneling. The house’s existing plaster ceiling medallions were beyond repair, so Norm brings back Preservation Plasterer Rory Brennan to replicate them on site. Fortunately, the originals were nearly identical to the medallions from the Charlestown project years ago, so Rory mixes up some plaster and pours a new medallion from the Charlestown mold. Afterward, they install a completed casting in the front parlor. At the end of the day, the fence is nearly complete and the sod is finished, thanks to our group of intrepid apprentices



Listen to Rory Brennan talk about Big Wally’s Plaster Magic and Plaster Repair


Check out Big Wally’s Plaster Magic product review on Jack Dever’s Home Solutions Show, WELW-1330 AM. Willoughby, OH.

Listen to an interview with Jack Dever and Rory Brennan, President and Founder of Big Wally’s Plaster Magic on March 27, 2010 8:05 AM EST. Please join us!



Plaster Repair Talk with Rory Brennan


Rory Brennan, President and Founder of Preservation Plastering and Big Wally’s Adhesives will be speaking and demonstrating Old house plaster repair at the New Hampshire Preservation Alliance-Old house and Barn Expo, this Saturday, March 20 2010.

There will be a one hour talk from 12N until 1 PM and a two hour demonstration/question and answer session from 2 PM until 4 PM.



Why Use Big Wally’s Plaster Magic?


The answer is straight forward.

Big Wally’s Plaster Magic takes half the time to achieve equal results.

Why does Big Wally’s Plaster Magic take half the time?

  1. You don’t have any screws and washers to cover up.
  2. You don’t rake out any cracks. (HINT: This actually weakens the plaster by ripping the plaster fibers.)
  3. You don’t apply or have any mesh tape to cover up.
  4. You don’t need any trowel skills.

Can you use a drill?
Can you use a vacuum cleaner?
Can you use a spray bottle?
Can you use a caulk gun?
Can you use a screw driver?
Can you use a putty knife?
Can you use a damp sponge?

If you can use these tools then you can repair your plaster in half the time it takes anyone using conventional methods.

How does Big Wally’s Plaster Magic work?

Big Wally’s Plaster Magic glues the plaster onto the lath reestablishing its attachment. The lath bridges the crack from behind, “welding” the crack together. This prevents the crack from opening up EVER!

After the plaster is glued to the lath nothing needs to be applied to the surface of the plaster, just fill in the holes and cracks with joint compound.

It’s that simple.



What Happens When You Have Rock Lath?


I have several long cracks in my ceiling and walls.

The House is a 1949 Cape Cod.  The backing is NOT lath but it looks like a cement board or another sheet of plaster.

Will Big Wally’s Plaster Magic work on this?

The plaster substrata that you have is called rock lath. The long cracks that you observe run at the border of the rock lath pieces. The rock laths are boards that are 16″ X 48″. The symptom that you see is typical of rock lath aging. It is not a very sound system. As your building moves the plaster cracks along these lines. There is nothing you can do to prevent this, you can only mask it. The good news is that barring other issues it shouldn’t fall down soon.

In order for Big Wally’s Plaster Magic to work it needs two materials to glue together. In this case the plaster is not delaminating from the lath making it a condition where the adhesive will not be useful. If the plaster is coming away from the rock lath or the layers of plaster are separating then you can use Big Wally’s Plaster Magic.