Deep pour & river table calculator
Estimate resin and kit quantities for a river table or rectangular casting.
Your estimate
Enter your dimensions to see the resin estimate and recommended kits.
Recommended quantity
kits
- Estimated material
- Equivalent volume
POURLA Deep Pour Epoxy
Shop deep pour epoxyHow much epoxy does a river table need?
Calculate the space the resin will fill, using length, average width and total depth. For a river table, measure the gap between the wood pieces. For a rectangular mold, use its inside dimensions.
From dimensions to resin quantity
Multiply length × average width × depth in inches, then divide by 231 to get US gallons. This calculator adds a 5% allowance by default and rounds up to whole kits of your selected size.
48 × 12 × 2 in → 5.24 US gal
With 5% allowance: 2 × 3-gallon kits
The estimate is for the resin-filled space. Separate seal coats, other cavities and a final surface coating need their own allowance or estimate.
Calculation & assumptions
1 US gallon = 231 cubic inches = 128 US fluid ounces. Centimeters and millimeters are converted before calculating. Kit quantities use the unrounded volume. The shape is treated as a rectangular space; an average river width is an approximation.
POURLA deep pour specifications
| Property | Specification |
|---|---|
| Mix ratio | 2A : 1B by volume |
| Gallon kit sizes | 1.5 / 3 US gal |
| Maximum layer depth | 4 in / 101.6 mm, subject to project conditions |
| Maximum mix size | 3 US gal at a time |
| Working time | 6 hours at 77°F / 25°C |
| Initial cure | 36–48 hours at 77°F |
Thickness, temperature and project size affect pouring and curing. Use the product instructions for your pour plan.
Read the technical data sheet ↗Planning a deeper or larger casting
A total material estimate is not a single-batch instruction. POURLA‘s TDS limits each layer to 4 inches and each mix to 3 US gallons; the product page notes that larger pours can need smaller layers. For deeper castings, plan layered pours using the TDS recoat guidance for your conditions.
Deep pour calculator FAQ
How do I measure an uneven river table?
Measure the length of the resin channel, then take width measurements at several points along it. Add the widths and divide by the number of measurements. Use that average width and the intended depth. Irregular edges make the result an estimate.
Does the estimate include extra resin?
The default allowance is 5% for handling losses and small variations. You can select 0%, 5%, 10% or 15% in Options. Seal coats, additional cavities and separate surface coatings are not calculated automatically.
How are the recommended kits calculated?
The calculator divides the estimated mixed volume, including your allowance, by the selected 1.5- or 3-US-gallon kit size and rounds up. Choose that same size and quantity on the product page. Kit quantity describes a purchase, not a single mixing batch.
Is the result for resin only or both parts?
The estimated material includes Part A and Part B combined. POURLA Deep Pour uses 2 parts resin to 1 part hardener by liquid volume. Keep that ratio for each individual batch; do not round the two parts independently.
Can I pour the whole estimate at once?
Not necessarily. The TDS limits each layer to 4 inches and each mix to 3 US gallons. Temperature, project size and shape also affect the pour plan. Follow the product instructions for layering and recoating rather than treating the total project volume as one batch.
Does a river table need a seal coat?
The TDS recommends a seal coat for porous materials such as live-edge wood to help reduce escaping air bubbles. This calculator estimates the main casting volume; calculate seal-coat material separately and follow the product‘s preparation instructions.