Stucco Scratcher or Scarifier make lines in the first stucco coat.
what is a stucco scratch coat, why scratch it with a scarifier.
stucco scratch line with a scratcher or scarifier
Hi Folks, why scratch stucco with a scarifier?
Now you know, it creates a key for the second coat of stucco to adhere to.
Scratcher or Scarifier.
Stucco Scratcher or Scarifier scratch lines in stucco first coat.
FYI, is anyone interested in why the red tape is on end?
The answer is in this video below, https://youtu.be/DJgsAQCoK58/
This video explains in detail how and why scratch lines in the first coat of plaster, whether wavy or horizontal, with a Scratcher or Scarifier, makes little difference. https://youtu.be/XqN3IA9iD3w/
One fact does indeed make a difference. The scratch line should never be vertical.
This horizontal scratching provides what we call the plastering industry a key to creating a natural mechanical bond between the scratch coat and the brown coat, or what is referred to as the second coat of stucco. Scratch lines.
Most folks spreading over cementitious substrates such as bricks, stones, concrete, or even concrete blocks, also known as CMU blocks, need only ONE COAT applied to a skim coat, thus not necessarily scratching the stucco surface.
More Scratcher or Scarifier video links are below.
https://youtu.be/8OnIKSUSOf0/ Plaster scratch and second coat wet float apply texture dash coat.
https://youtu.be/gJtIT6l-X0Y/ Plastering same day Scratch and Brown plaster coats.
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