How do I apply fiberglass mesh tape with mastic without it wrinkling?

1. Apply a thin base coat of mastic directly over the metal joint first. 2. Embed the fiberglass mesh scrim tape smoothly into that wet base layer using a brush or gloved hand to push out any air bubbles. 3. Apply a secondary top coat over the tape until the mesh pattern is completely filled and encapsulated.

['1. Apply a thin base coat of mastic directly over the metal joint first. 2. Embed the fiberglass mesh scrim tape smoothly into that wet base layer using a brush or gloved hand to push out any air bubbles. 3. Apply a secondary top coat over the tape until the mesh pattern is completely filled and encapsulated.']

Stop if

• Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Steps

• Apply a thin base coat of mastic directly over the metal joint first.
• Embed the fiberglass mesh scrim tape smoothly into that wet base layer using a brush or gloved hand to push out any air bubbles.
• Apply a secondary top coat over the tape until the mesh pattern is completely filled and encapsulated.

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