- Board size—
- Board length— ft
- Estimated material cost—
- Fasteners (approx.)—
- Primer / paint (2 coats)—
Shopping Summary
| Total fascia length | — |
| Waste-adjusted length | — |
| Boards (size / length) | — |
| Estimated cost | — |
| Fasteners / paint | — |
Fascia Sizing Guide
| Size | Common use |
|---|---|
| 1×6 | Small roofs, sheds, shallow rafter tails |
| 1×8 | Most common residential fascia |
| 1×10 | Taller roof edges and larger overhangs |
| 2x fascia | Heavier framing or exposed structural detail |
Material Comparison
| Material | Notes |
|---|---|
| Wood (pine/cedar) | Cheapest, paintable, needs sealing and upkeep, can rot |
| PVC | Rot-proof, low maintenance, more expensive, expands with heat |
| Composite | Durable and stable, pre-finished options, mid to high cost |
| Aluminum-wrapped | Wood or sheathing wrapped in coil stock; protects and hides the board |
Common Project Examples
| Project | Approx. fascia |
|---|---|
| Shed | 30 – 70 ft |
| Garage | 90 – 150 ft |
| Ranch home | 150 – 220 ft |
| Gable roof house | 180 – 300 ft |
| Porch roof | 30 – 80 ft |
What Is Fascia Board?
Fascia is the long, flat board that runs horizontally along the edge of the roof, capping the ends of the rafters or trusses. It is the band you see behind the gutters, and it does real work: it carries the gutter, closes off the roof edge, and gives the roofline a finished look. This calculator answers the practical question, how many boards do I need to buy. Enter your eave, rake, and other run lengths, pick a board size and length, add a waste factor, and it returns the board count, the cost, and a fastener and paint estimate.
Fascia vs Soffit vs Drip Edge
These three roof-edge parts are easy to mix up. Fascia is the vertical board facing outward at the eave, where the gutter mounts. Soffit is the horizontal panel underneath, closing the gap between the fascia and the wall and usually vented for attic airflow. Drip edge is the thin metal flashing along the very edge of the roof that directs water off the deck and over the fascia into the gutter. Together they finish and protect the roof edge: drip edge sheds water, fascia carries the gutter, soffit seals and ventilates the underside.
Fascia Materials
Wood is the traditional and cheapest choice, usually pine or cedar, but it must be primed and painted on all sides and will eventually rot if water gets in. PVC fascia is rot-proof and low-maintenance, a favorite for wet climates, though it costs more and moves with temperature. Composite offers wood looks with better durability, often pre-finished. Aluminum-wrapped fascia takes a wood or sheathing core and wraps it in coil stock, protecting the board and removing most painting. Match the material to your climate, budget, and tolerance for future maintenance.
How Much Fascia Do I Need?
Total the linear feet of every roof edge that carries fascia, mainly the eaves and the rakes, plus any dormers, porch, or garage runs. Add a waste factor of 5 to 15 percent for miters, cuts, and joints on long runs, then divide by the usable length of each board, allowing a little for the overlap at scarf joints and mitered corners. The calculator handles that math and rounds up to whole boards so you leave the store with the right count instead of a hopeful guess.