Drywall (K01)
Drywall transforms framed walls and ceilings into smooth finished surfaces – but quality installation and finishing determine whether imperfections show through paint.
This BidScope guides you through drywall work: hanging (installing sheets), taping and mudding (joint finishing), texturing, and repairs.
Learn drywall types: regular gypsum board 1/2 inch most common for walls and ceilings (5/8 inch for ceilings with 24-inch joist spacing), moisture-resistant (green board or purple board for bathrooms and kitchens), mold-resistant (paperless or special core), fire-rated Type X (required in some locations like garage walls, furnace rooms), and soundproof (higher density for sound dampening).
Understand hanging process: measure and cut sheets to minimize joints, install perpendicular to framing (horizontal on walls typical, ceilings first), proper screw spacing (12 inches on ceilings, 16 inches on walls), screw depth just below surface without breaking paper, support seams on framing members, outlets and fixtures cut precisely.
Master taping and mudding: paper tape or mesh tape at all joints (paper tape stronger, mesh easier for DIY but weaker), joint compound (mud) applied in multiple coats, first coat embeds tape, second coat feathers edges wider, third coat (and sometimes fourth) for smooth finish, corner bead at outside corners (metal or vinyl), inside corners taped.
Navigate finish levels: Level 0 (no taping, temporary), Level 1 (tape embedded, utility areas), Level 2 (one coat over tape, garage common), Level 3 (two coats, texture will be applied), Level 4 (three coats, smooth for paint, most residential), Level 5 (skim coat entire surface, critical lighting or high-end finish).
Learn texturing options: smooth (Level 4 or 5 finish, no texture), orange peel (light spray texture, most common residential), knockdown (texture sprayed and lightly flattened), skip trowel (hand-troweled texture), popcorn ceiling (outdated, removal common).
Understand Utah climate considerations: low humidity allows faster drying of joint compound, rapid drying can cause cracking if mud applied too thick, proper ventilation during finishing, dust control important in dry climate.
Know repair techniques: small holes patched with compound or patch kits, large holes require backing and new drywall piece, cracks at corners and seams indicate settling or movement (address cause), water damage requires drying and often replacement (mold potential), texture matching for repairs.
Navigate soundproofing: double layer 5/8-inch drywall increases mass, resilient channels or clips decouple drywall from framing, soundproof drywall (QuietRock or similar, expensive but effective), seal all penetrations and gaps, insulation in walls enhances soundproofing.
Calculate project scope: whole house drywall new construction, room addition or remodel, ceiling replacement, repairs and patches.
Budget realistically: drywall installation $1.50-3 per square foot, finishing and painting add $1-3 per square foot, repairs $150-500 depending on size, whole house $5,000-15,000+ depending on size and finish level.
This tool ensures your drywall is professionally installed and finished for flawless walls and ceilings.
What’s Included:
- Drywall types (regular gypsum, moisture-resistant, mold-resistant, fire-rated, soundproof)
- Regular gypsum board (1/2 inch walls, 5/8 inch ceilings with 24-inch joists)
- Standard 4×8 or 4×12 sheets
- Moisture-resistant (green board or purple board for bathrooms/kitchens)
- Mold-resistant (paperless or special core)
- Fire-rated Type X (garage walls, furnace rooms, fire separation)
- Soundproof drywall (higher density, QuietRock)
- Hanging process (measure, cut, install)
- Measure and cut to minimize joints
- Install perpendicular to framing (horizontal walls typical)
- Ceilings first, then walls
- Proper screw spacing (12″ ceilings, 16″ walls)
- Screw depth (just below surface, not breaking paper)
- Support seams on framing members
- Outlets and fixtures cut precisely
- Taping and mudding (joint finishing)
- Paper tape vs mesh tape (paper stronger, mesh easier)
- Joint compound (mud) multiple coats
- First coat embeds tape
- Second coat feathers edges wider
- Third coat smooth finish (sometimes fourth)
- Corner bead at outside corners (metal or vinyl)
- Inside corners taped
- Sanding between coats
- Finish levels (0 through 5)
- Level 0 (no taping, temporary)
- Level 1 (tape embedded, utility areas)
- Level 2 (one coat over tape, garages)
- Level 3 (two coats, texture will be applied)
- Level 4 (three coats, smooth for paint, most residential)
- Level 5 (skim coat entire surface, critical lighting)
- Texturing options (smooth, orange peel, knockdown, skip trowel, popcorn)
- Smooth (Level 4 or 5, no texture)
- Orange peel (light spray, most common residential)
- Knockdown (spray and flatten)
- Skip trowel (hand-troweled)
- Popcorn ceiling (outdated, removal common)
- Utah climate considerations
- Low humidity (faster drying of compound)
- Rapid drying can cause cracking (thick applications)
- Proper ventilation during finishing
- Dust control in dry climate
- Repair techniques (holes, cracks, water damage)
- Small holes (compound or patch kits)
- Large holes (backing and new drywall piece)
- Cracks at corners and seams (settling, movement)
- Water damage (drying required, often replacement, mold)
- Texture matching for repairs
- Soundproofing drywall (mass, decoupling, sealing)
- Double layer 5/8-inch (increases mass)
- Resilient channels or clips (decouple from framing)
- Soundproof drywall (QuietRock, expensive)
- Seal penetrations and gaps
- Insulation enhances soundproofing
- Project scope options (whole house, addition, ceiling, repairs)
- New construction whole house
- Room addition or remodel
- Ceiling replacement
- Repairs and patches
- Cost factors ($1.50-3/sf installation, $1-3/sf finishing, $150-500 repairs, $5,000-15,000+ whole house)
- Finding qualified drywall contractors
- License and insurance
- Finish level expertise
- Texture matching skills
