how is drywall attached to the ceiling joists using drywall screws

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Old 11-24-15, 09:35 PM
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how is drywall attached to the ceiling joists using drywall screws

What I would like to know is how is drywall attached to the ceiling joists using drywall screws ? Typically how many drywall screws are used on each joist for each piece of drywall sheet ? How space apart are the drywall screws on the same joist ? So for example you want to install a 4' x 8' sheet of drywall and the joists are 16" - 18" apart do you have to place screws 2-3 screws on each joist with each screw 2' feet apart or can you skip a joist ? How many screws would be required on each joist and how far apart would the screws need to placed on each joist ? Thanks
 
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Old 11-24-15, 10:21 PM
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"Each joist" will usually have 8 screws across the 48" width of a sheet. Rather than spacing them exactly 6" apart, many guys will place them in pairs, so that they only have to wipe and sand 3 spots in the field.

Some guys will do 7 screws, evenly spaced 8" on center. IMO, the method above is better.
 
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Old 11-25-15, 03:49 AM
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Here's a guide from the company that makes sheetrock.
Joist are never skipped!
http://www.usg.com/content/dam/USG_M...de-en-J371.pdf
 
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Old 11-25-15, 04:00 AM
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12" in the field of the panel is the standard.
 
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Old 11-25-15, 05:33 AM
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Stagger your end joints if not planning to already. Staggering the end butt joints makes the seams less noticeable.
 
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Old 11-25-15, 06:31 AM
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Page 11, figure 8 in that link Joe provided explains it better than I did.... 12" on center in the field, but nailing in pairs is recommended. That's 8 screws per joist, but the pairs are so close together that it's only 3 spots to wipe. And 12" on center is the maximum spacing recommended.
 
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Old 11-27-15, 01:53 AM
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Thanks very much. I appreciate the responses.
 
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