Coatings Coverage Calculator
Calculate how much coating you need to cover your job's square footage with MIL-DTL-24441, MIL-PRF-24635, MIL-DTL-24607, TT-P-645B, or TPD-1000A.
These are theoretical values. Please review "How much I should buy?" to adjust for your job.
| Spec |
Type |
Dry mil
thickness |
Theoretical
coverage
per gallon |
|
# of coats |
|
Theoretical
full coverage |
| 24441 |
Type III (3 coats) |
3 mils |
360 ft² |
÷ |
3 |
= |
120 ft² per gallon |
| Type IV (2 coats) |
5 mils |
230 ft² |
÷ |
2 |
= |
115 ft² per gallon |
| 24635 |
Type II (340 g/L) |
2 mils |
480 ft² |
÷ |
2 |
= |
240 ft² per gallon |
| Type III (250 g/L) |
2 mils |
480 ft² |
÷ |
2 |
= |
240 ft² per gallon |
| 24607 |
n/a |
2 mils |
480 ft² |
÷ |
2 |
= |
240 ft² per gallon |
| TT-P-645B |
n/a |
3 mils |
375 ft² |
÷ |
1 |
= |
375 ft² per gallon |
| TPD-1000A |
n/a |
1 mil |
910 ft² |
÷ |
2 |
= |
455 ft² per gallon |
How much should I buy?
Take the theoretical calculation above, and adjust for these factors.
- mil thickness -- The thicker you apply, the more you'll need.
- condition of surface -- Rougher surfaces require more coating.
- application method -- Brushing and rolling require more coating than spraying.
- overage -- Consider touch-up, waste, and difficult to measure surfaces.
Taking these factors into account, you may need 10-25% more than the theoretical full coverage.
