Drywall worksheet

1. 4 × 10 ft sheets to buy: 14

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(12+10\right)\times 9$$=396\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $396-1\times 3\times 5-1\times 3\times 5$$=366\text{\hspace{0.17em}ft²}$

3. Add 9% for waste, divide by the 40 ft² one 4 × 10 ft sheet covers, and round up to whole sheets

   $\frac{366\times 1.09}{40}$$=9.9735$$=\text{rounded up:}10$

4. Find the ceiling area: length × width

   $12\times 10$$=120\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{120\times 1.09}{40}$$=3.27$$=\text{rounded up:}4$

6. Add the wall and ceiling sheets to get the number to buy

   $10+4$$=14$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $14\times 40\times 1$$=560$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{486\times 1}{100}$$=4.86\text{\hspace{0.17em}gal}$

2. 4 × 12 ft sheets to buy: 16

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(14+12\right)\times 11$$=572\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $572-1\times 4\times 8-1\times 3\times 4$$=528\text{\hspace{0.17em}ft²}$

3. Add 7% for waste, divide by the 48 ft² one 4 × 12 ft sheet covers, and round up to whole sheets

   $\frac{528\times 1.07}{48}$$=11.77$$=\text{rounded up:}12$

4. Find the ceiling area: length × width

   $14\times 12$$=168\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{168\times 1.07}{48}$$=3.745$$=\text{rounded up:}4$

6. Add the wall and ceiling sheets to get the number to buy

   $12+4$$=16$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $16\times 48\times 1$$=768$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{696\times 1}{100}$$=6.96\text{\hspace{0.17em}gal}$

3. 4 × 8 ft sheets to buy: 22

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(12+10\right)\times 12$$=528\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $528-1\times 3\times 10-1\times 3\times 5$$=483\text{\hspace{0.17em}ft²}$

3. Add 8% for waste, divide by the 32 ft² one 4 × 8 ft sheet covers, and round up to whole sheets

   $\frac{483\times 1.08}{32}$$=16.3013$$=\text{rounded up:}17$

4. Find the ceiling area: length × width

   $12\times 10$$=120\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{120\times 1.08}{32}$$=4.05$$=\text{rounded up:}5$

6. Add the wall and ceiling sheets to get the number to buy

   $17+5$$=22$

7. Estimate screws: all the board you buy × 2 per ft². This is a typical rate, not the official screw spacing

   $22\times 32\times 2$$=\mathrm{1,408}$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{603\times 1}{100}$$=6.03\text{\hspace{0.17em}gal}$

4. 4 × 8 ft sheets to buy: 17

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(11+11\right)\times 8$$=352\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $352-1\times 2\times 7-1\times 2\times 4$$=330\text{\hspace{0.17em}ft²}$

3. Add 11% for waste, divide by the 32 ft² one 4 × 8 ft sheet covers, and round up to whole sheets

   $\frac{330\times 1.11}{32}$$=11.4469$$=\text{rounded up:}12$

4. Find the ceiling area: length × width

   $11\times 11$$=121\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{121\times 1.11}{32}$$=4.1972$$=\text{rounded up:}5$

6. Add the wall and ceiling sheets to get the number to buy

   $12+5$$=17$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $17\times 32\times 1$$=544$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{451\times 1}{100}$$=4.51\text{\hspace{0.17em}gal}$

5. 4 × 8 ft sheets to buy: 15

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(14+9\right)\times 7$$=322\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $322-2\times 3\times 6-1\times 4\times 4$$=270\text{\hspace{0.17em}ft²}$

3. Add 12% for waste, divide by the 32 ft² one 4 × 8 ft sheet covers, and round up to whole sheets

   $\frac{270\times 1.12}{32}$$=9.45$$=\text{rounded up:}10$

4. Find the ceiling area: length × width

   $14\times 9$$=126\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{126\times 1.12}{32}$$=4.41$$=\text{rounded up:}5$

6. Add the wall and ceiling sheets to get the number to buy

   $10+5$$=15$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $15\times 32\times 1$$=480$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{396\times 1}{100}$$=3.96\text{\hspace{0.17em}gal}$

6. 4 × 12 ft sheets to buy: 9

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(11+11\right)\times 7$$=308\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $308-2\times 4\times 5-1\times 3\times 3$$=259\text{\hspace{0.17em}ft²}$

3. Add 9% for waste, divide by the 48 ft² one 4 × 12 ft sheet covers, and round up to whole sheets

   $\frac{259\times 1.09}{48}$$=5.8815$$=\text{rounded up:}6$

4. Find the ceiling area: length × width

   $11\times 11$$=121\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{121\times 1.09}{48}$$=2.7477$$=\text{rounded up:}3$

6. Add the wall and ceiling sheets to get the number to buy

   $6+3$$=9$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $9\times 48\times 1$$=432$

8. Estimate joint compound: the area you'll finish × 2 gallons for every 100 ft² (a typical rate)

   $\frac{380\times 2}{100}$$=7.6\text{\hspace{0.17em}gal}$

7. 4 × 10 ft sheets to buy: 16

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(14+11\right)\times 8$$=400\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $400-1\times 4\times 7-1\times 3\times 4$$=360\text{\hspace{0.17em}ft²}$

3. Add 12% for waste, divide by the 40 ft² one 4 × 10 ft sheet covers, and round up to whole sheets

   $\frac{360\times 1.12}{40}$$=10.08$$=\text{rounded up:}11$

4. Find the ceiling area: length × width

   $14\times 11$$=154\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{154\times 1.12}{40}$$=4.312$$=\text{rounded up:}5$

6. Add the wall and ceiling sheets to get the number to buy

   $11+5$$=16$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $16\times 40\times 1$$=640$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{514\times 1}{100}$$=5.14\text{\hspace{0.17em}gal}$

8. 4 × 10 ft sheets to buy: 12

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(14+7\right)\times 9$$=378\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $378-2\times 3\times 7-1\times 3\times 3$$=327\text{\hspace{0.17em}ft²}$

3. Add 9% for waste, divide by the 40 ft² one 4 × 10 ft sheet covers, and round up to whole sheets

   $\frac{327\times 1.09}{40}$$=8.9108$$=\text{rounded up:}9$

4. Find the ceiling area: length × width

   $14\times 7$$=98\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{98\times 1.09}{40}$$=2.6705$$=\text{rounded up:}3$

6. Add the wall and ceiling sheets to get the number to buy

   $9+3$$=12$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $12\times 40\times 1$$=480$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{425\times 1}{100}$$=4.25\text{\hspace{0.17em}gal}$

9. 4 × 10 ft sheets to buy: 12

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(14+8\right)\times 7$$=308\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $308-1\times 3\times 6-2\times 3\times 4$$=266\text{\hspace{0.17em}ft²}$

3. Add 10% for waste, divide by the 40 ft² one 4 × 10 ft sheet covers, and round up to whole sheets

   $\frac{266\times 1.1}{40}$$=7.315$$=\text{rounded up:}8$

4. Find the ceiling area: length × width

   $14\times 8$$=112\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{112\times 1.1}{40}$$=3.08$$=\text{rounded up:}4$

6. Add the wall and ceiling sheets to get the number to buy

   $8+4$$=12$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $12\times 40\times 1$$=480$

8. Estimate joint compound: the area you'll finish × 1 gallons for every 100 ft² (a typical rate)

   $\frac{378\times 1}{100}$$=3.78\text{\hspace{0.17em}gal}$

10. 4 × 10 ft sheets to buy: 16

1. Find the total wall area: the distance around the room, 2 × (length + width), times the wall height

   $2\times \left(16+12\right)\times 7$$=392\text{\hspace{0.17em}ft²}$

2. Take away the doors and windows, since they don't get drywall

   $392-1\times 3\times 5-1\times 3\times 3$$=368\text{\hspace{0.17em}ft²}$

3. Add 8% for waste, divide by the 40 ft² one 4 × 10 ft sheet covers, and round up to whole sheets

   $\frac{368\times 1.08}{40}$$=9.936$$=\text{rounded up:}10$

4. Find the ceiling area: length × width

   $16\times 12$$=192\text{\hspace{0.17em}ft²}$

5. Count ceiling sheets on their own, because leftover wall pieces rarely fit the ceiling

   $\frac{192\times 1.08}{40}$$=5.184$$=\text{rounded up:}6$

6. Add the wall and ceiling sheets to get the number to buy

   $10+6$$=16$

7. Estimate screws: all the board you buy × 1 per ft². This is a typical rate, not the official screw spacing

   $16\times 40\times 1$$=640$

8. Estimate joint compound: the area you'll finish × 2 gallons for every 100 ft² (a typical rate)

   $\frac{560\times 2}{100}$$=11.2\text{\hspace{0.17em}gal}$