Hang Drywall on Walls

A. Finished-Project Specification

Scope: one complete wall-panel installation covering every wall surface in the designated wall system that the approved drywall schedule identifies for this chapter, including all required box, pipe, window, door, and access openings.

B. Component Schedule

Component	Quantity	Material	Finished Size	Preparation
Full-sheet wall panels	Per approved panel takeoff	Panel type and thickness per approved drywall schedule	Full mill dimension unless the layout requires a length cut	Staged and labeled by wall location per Chapter 2 and Chapter 3
Cut-sheet wall panels	Per approved panel takeoff	Same as full-sheet panels for the wall	Per the controlled cut schedule in Chapter 3	Cut, labeled, and dry-fit per Chapter 3
Opening cutouts	One per identified box, pipe, window, door, or access location	Same panel as the piece being installed	Per Chapter 4 opening dimensions	Cut and verified clear of boxes and framing per Chapter 4

C. Material Takeoff

• Panels: quantity, type, thickness, and orientation per the approved drywall schedule and panel takeoff for the wall system.
• Fasteners: screw or nail type, length, and quantity per the Chapter 7 fastening schedule for the specified substrate and panel thickness.
• Adhesive: type and quantity only where the approved assembly specifies adhesive application in addition to or instead of mechanical fasteners.
• Backing verification: confirmation that Chapter 1 backing and blocking remain in place at every panel-edge and accessory location before panels are installed.

D. Reference Conventions

Use the factory edge, butt joint, floor gap, ceiling gap, staggered seam, four-corner intersection, and control joint definitions given in the Reference Conventions table above for every layout and inspection decision.

E. Acceptance Standards

Check	Standard
Floor and ceiling gaps	Match the gap specified in the approved drywall schedule at every panel edge along the floor and ceiling
Joint layout	No four-corner intersections; joints staggered between adjacent rows; panel joints not aligned with door or window opening corners where the approved layout prohibits it
Panel support	Every panel edge lands on framing, blocking, or an approved floating-edge detail; no unsupported edge
Fastening	Fastener type, length, spacing, and depth match the Chapter 7 fastening schedule with no proud heads or torn face paper
Openings	Box, pipe, window, door, and access cutouts match Chapter 4 dimensions with no large gaps and no damage to boxes, frames, or flashing
Panel condition	No broken corners, crushed edges, delamination, moisture damage, or excessive overcuts beyond the project limit
Access preservation	Every electrical box, access panel, valve, damper, and inspection point identified in Chapter 1 remains reachable and is not buried
Rated-assembly and control-joint preservation	Every control joint and rated-assembly detail identified in the approved plans is preserved exactly as specified

F. Planning and Reference Procedure (Steps 1–6)

1. Review panel orientation, wall height, rated-assembly details, fastening schedule, adhesives, control joints, and finish level. Confirm these match the approved drywall schedule for the specific wall system before proceeding.
2. Confirm ceiling panels are complete where the sequence requires them first. Verify the Chapter 5 ceiling inspection record for the room before installing any wall panel that depends on the ceiling edge.
3. Plan full-sheet and cut-sheet locations to minimize butt joints and small pieces. Mark the intended layout on the framing or on a layout sheet before cutting any panel.
4. Avoid aligning panel joints with door and window opening corners where the approved layout prohibits it. Shift the panel layout so no vertical joint lands at a jamb corner unless the approved plan specifically allows it.
5. Establish a level or floor reference that accounts for floor irregularity. Check the floor with a level across the wall length and mark the reference line for the first panel's bottom edge.
6. Mark stud locations on the floor and ceiling or adjacent panels. Use the chalk line to transfer every stud, plate, and blocking location the installer will need during fastening.

G. Positioning and Fastening Procedure (Steps 7–13)

1. Stage the first panel using the required team lift, cart, or panel carrier. Confirm the panel orientation matches the layout plan before lifting.
2. Position the panel with the specified floor and ceiling gaps. Use gap gauges or spacers to hold the specified clearance while the panel is held in place.
3. Align factory edges with adjoining panels or approved joint locations. Confirm the factory edge lands on the marked joint location before fastening.
4. Hold the panel flat to framing without forcing bowed framing into alignment. If the panel will not sit flat, stop and refer the framing deviation back to the responsible trade rather than forcing the panel.
5. Install initial holding fasteners. Place two or three fasteners near the panel center to hold position before completing the full pattern.
6. Complete fastening from the center toward edges using Chapter 7. Follow the Chapter 7 fastening schedule for spacing, depth, and edge distance for the specified substrate.
7. Cut box, pipe, window, door, and access openings using Chapter 4. Complete any remaining cutouts on the positioned panel before installing the next panel.

H. Seam, Access, and Correction Procedure (Steps 14–22)

1. Install subsequent panels with controlled joints and staggered seams. Offset each new joint from the joint in the adjacent row per the layout plan.
2. Maintain the approved relationship between horizontal seams, blocking, and stud locations. Confirm horizontal seams land on blocking specified for that purpose.
3. Preserve required control joints and rated-assembly details. Install panels up to, but not across, every marked control joint or rated-assembly break.
4. Do not bury electrical boxes, access panels, valves, or inspection points. Confirm every access component identified in Chapter 1 remains reachable after each panel is installed.
5. Install narrow pieces only where supported and permitted by the layout. Confirm backing exists for any piece narrower than the project's minimum unsupported-width limit before fastening it.
6. Inspect joint gaps, damaged paper, unsupported edges, panel bow, fastener depth, and opening clearances. Check each installed panel against the Acceptance Standards table before proceeding to the next.
7. Correct framing or backing deficiencies before proceeding. Stop and refer any newly discovered framing or backing deficiency to the responsible trade rather than concealing it with panel positioning.
8. Replace panels with major breakage, moisture damage, or excessive overcuts. Remove and replace any panel exceeding the project's damage limit rather than proceeding to fastening.
9. Photograph and document rated or concealed assembly details. Photograph every rated-assembly detail and access-preserving cutout before it is covered by bead, tape, or compound.