Mixing Calculator
Binder and granule ratios, solved on site.
Enter your area and thickness — or the rubber you already have on the pallet — and get exact binder and granule weights for the black SBR base and the EPDM color top layer.
Mode
Units
Surface area (sq ft)
Base layer — black rubber
Clean, dry SBR granules at the specified gradation. Sets the cushion and fall-height rating.
Base layer only — never a top layer · guide cure 6 – 7 h
Model range 20–20% binder (fixed)
Binder (lb)
936.7
936.7 – 936.7
Rubber (lb)
3,746.7
3,746.7 – 3,746.7
Total mix (lb)
4,683.3
at working ratio
Top layer — EPDM color
Selected EPDM color blend, kept within the model's rubber proportion range.
Premium top layer — EPDM color · guide cure 12 – 14 h
Model range 16–18% binder
Binder (lb)
442.0
416.0 – 468.0
Rubber (lb)
2,158.0
2,132.0 – 2,184.0
Total mix (lb)
2,600.0
at working ratio
Combined order total
Binder (lb)
1,378.7
Rubber granules (lb)
5,904.7
Total mixed weight (lb)
7,283.3
3 – 4 minute mixing workflow
- 01WeighRubber granules to the calculated weight.
- 02AddGroundVex binder at the selected ratio.
- 03Mix3 – 4 minutes to a uniform coat.
- 04LayPlace and trowel immediately.
Add binder to weighed rubber granules, mix 3 – 4 minutes, then place and trowel immediately. Guide cure times are conditions-dependent (50% RH at the temperatures in the current product guide). Density figures are installed-compacted guides — always follow current GroundVex technical data, project specifications, and site conditions.