Polymeric sand coverage depends mostly on how wide and deep your paver joints are. Enter the paved area and choose the joint width; the calculator gives the bags to buy and a likely range.
Coverage used
Alliance Gator’s product reference guide lists Gator Maxx G2 and Supersand G2 at 65–85 sq ft per 50 lb bag for joints of 1/8–3/8 in, and 22–42 sq ft for joints of 3/4–1¼ in, on 2⅜ in thick pavers. The calculator uses the middle of each range. Thicker pavers, deeper joints and tumbled pavers with rounded edges use more sand.
Formula
Bags = area ÷ average coverage per bag, rounded up Range = area ÷ highest coverage to area ÷ lowest coverage
Worked example: a 12 × 12 ft patio, narrow joints
- Area: 144 sq ft.
- Average coverage: 75 sq ft per bag; bags: 144 ÷ 75 = 1.9, so 2 bags.
- Range: 2 to 3 bags.
Bags by patio size
| Area | Narrow joints | Wide joints |
|---|---|---|
| 100 sq ft | 2 | 4 |
| 200 sq ft | 3 | 7 |
| 300 sq ft | 4 | 10 |
| 400 sq ft | 6 | 13 |
| 500 sq ft | 7 | 16 |
Questions
How much does a bag of polymeric sand cover?
About 65–85 sq ft with narrow joints and 22–42 sq ft with wide joints for Alliance Gator’s G2 sands; check your product.
Can I use polymeric sand for flagstone?
Some products are made for wide joints in flagstone; use one rated for your joint width.
Should I buy an extra bag?
Yes; returning one unopened bag is easier than stopping halfway.
Sources
- Product Reference Guide, Alliance Gator.
Used for: Coverage per 50 lb bag of 65–85 sq ft (1/8–3/8 in joints) and 22–42 sq ft (3/4–1¼ in joints).