Mastic Application Thickness

What's target mastic thickness? Embed mesh tape or mastic alone sufficient?

I'm checking mastic application thickness at [location]. I found joint with white compound, unsure if thick enough. What's target mastic thickness? Embed mesh tape or mastic alone sufficient?

Stop if

• Hold point on mastic application thickness: I have the location, photo, drawing/detail, and what was checked. Who should verify before this gets cut, covered, lifted, sealed, energized, or signed off?

Watch out

• Don't apply thinner than paint. Don't apply over dirt. Don't fill gaps >1/4 inch without mesh tape.

Check

• room/grid/area
• photo of condition
• drawing/detail
• manufacturer/model if visible
• what I already checked

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