Good painting decisions begin before the first bucket is opened. Use this guide as a practical starting point, then confirm the details of your own building before purchasing or beginning work.
Measure paintable surface area
Measure wall length and height, calculate the total wall area, then subtract large doors and windows. Repeat for each room or exterior elevation.
Allow for the number of coats
New plaster, repaired walls, deep colour changes and porous surfaces may need additional coats. The quantity estimate should reflect the actual coating system, not a one-coat assumption.
Account for surface condition
Rough textured walls often consume more paint than smooth prepared walls. Uneven absorption can also increase material usage.
Buy with a sensible project margin
A small contingency helps with touch-ups and minor measuring differences. For large projects, verify the estimate before ordering the complete quantity.
Practical next step
Every building is different. Share your location, wall condition and project type with Filadephia Paints so the product, quantity and preparation advice can be matched to your actual job.
Ask for a paint quantity estimate