Estimating Guides
, 10 min reading time
Key Takeaways
- Vinyl siding needs about 115 nails per square, spaced roughly 12–16" apart and centered in the nailing slot, never snug.
- Wood lap siding needs far more fasteners per square foot than vinyl, up to 4,100 nails per 1,000 sq. ft. for 8" shiplap at 16" centers.
- Decking installation requires 400 – 535 fasteners per 100 sq ft. This will vary based on board width and joist spacing.
How Many Fasteners Do I Need?
When installing standard vinyl siding, you’ll need roughly 115 nails per square (100 sq. ft.) That figure assumes one nail every 12–16 inches along each panel, centered in the nailing slot. Leave a small gap beneath the nail head so the siding can expand and contract with temperature changes. For how many siding nails per square of wood lap, shiplap, or board-and-batten profiles, use the detailed chart below.
Siding Nail Estimator
Nails need to fasten 1,000 square feet of siding (approx)
| Siding Width | Type | 16" Center | 24" Center |
| 6" | Plain or Rabbeted Bevel, T&G | 2,050 | 1,360 |
| 6" | Shiplap, V Rustic, Channel Rustic | 2,050 | 1,360 |
| 8" | Plain or Rabbeted Bevel, T&G | 1,450 | 960 |
| 8" | Shiplap, V Rustic, Channel Rustic | 4,100 | 1,920 |
| 8" | Board & Batten | 2,808 | 1,880 |
| 10" | Plain or Rabbeted Bevel, T&G | 1,150 | 760 |
| 10" | Shiplap, V Rustic, Channel Rustic | 2,900 | 1,520 |
***** This chart is intended as a guide only *****
Siding nails should be long enough to penetrate at least 1-1/2" into the studs or studs and sheathing combined. If you’re installing siding instead of a wood lap profile, use the count above for vinyl siding, as the nailing method is different and the panels are designed to float rather than be fastened tightly against the wall.
Suggested Nailing Methods
Each profile below, including plain bevel, rabbeted bevel, shiplap, tongue-and-groove, channel rustic, and board-and-batten, has its own overlap and nail-clearance requirements. Keep nails centered in the slot and leave enough clearance for expansion to help prevent buckling. Proper installation is just as important as using the correct number of nails, especially in climates with wide temperature swings.
Deck Fastener Guide
Nails or screws need to fasten 100 sq feet of decking
| Deck Boards | 16" OC | 24" OC |
| 2" x 4" | 535 pcs | 400 pcs |
| 2" x 6" | 435 pcs | 325 pcs |
Based on 2 fasteners per joist. 16" spread for diagonal decking. ** This chart is intended as a guide only **
Working out a similar count for framing? Our Deck Fastener Calculator walks through joist spacing and board width. The tool will also suggest the right fastener for your decking material.
Pilot Hole Guide for Annular Thread Nails
| Nail Gauge | Hardwood | Softwood |
| 14 | 5/64 | 1/16 |
| 13 | 3/32 | 1/16 |
| 12 | 7/64 | 5/64 |
| 10 | 1/8 | 3/32 |
| 8 | 9/65 | 1/8 |
Screw Pilot Hole Guide
| Screw No. | Softwood | Hardwood |
| 6 | 1/16" | 5/64" |
| 7 | 1/16" | 3/32" |
| 8 | 5/64" | 3/32" |
| 10 | 3/32" | 7/64" |
| 12 | 7/64" | 1/8" |
FAQs
How many nails per square of vinyl siding do I need?
Plan on about 115 nails per square (100 sq. ft.) using 1-1/2" to 2-1/2" vinyl siding nails, spaced every 12–16 inches along each panel and centered in the nailing slot.
How many siding nails per square for wood lap siding?
It depends on the profile and width, ranging from about 760 nails per 1,000 sq. ft. (10" bevel siding at 24" centers) to 4,100 nails per 1,000 sq. ft. (8" shiplap at 16" centers). Use the Siding Nail Estimator chart above for your exact profile.
What's the difference between nailing vinyl siding and wood siding?
Vinyl siding floats on the wall, so nails go in the center of the slot with room to move. Wood siding nails tightly to the studs or sheathing and needs to penetrate at least 1-1/2" into solid framing.
