Deep Pour vs Table Top Epoxy

Many projects know how much epoxy they need before deciding which kind of resin can handle the pour. This guide compares deep pour and table top epoxy by depth per pour, cure, and use.

Direct Answer

The short answer

Use a coating resin for the specified thin finish layer and a casting resin rated for the depth and volume of the cavity. For example, PrimaLoc publishes a maximum 1/8 in layer for its bar/tabletop epoxy; that limit cannot be transferred to a deep-pour product. A 1.5 in river channel needs a product-specific casting plan, even if its total volume is small.

Takeaways

The total amount needed does not determine the right product type by itself.
A thin finish coat and a thick river channel can require completely different resins.
Always compare target depth against the product specification before ordering.

How the use cases differ

Deep pour resin is for thickness, layers, and controlled cure.
Table top resin is for thin self-leveling finish work.
Some projects use both: deep pour in the cavity and table top on the final surface.

Decision shortcuts

If the planned resin depth is substantial, start on the deep pour page.
If you are coating a finished surface, start on the table top page.
If you are unsure, compare the result with the product specification before buying.

Compare the job, not the product name

Decision	Thin finish layer	Thick cavity or river
Quantity model	Surface area × chosen coat thickness	Cavity length × clear width × depth
Main check	Approved coat thickness and finish use	Approved depth, batch volume and cure conditions
Surface to measure	Top plus any coated edges	Space left after wood and inserts
Timing	Recoat window for the coating	Lift timing and surface preparation between casts

PrimaLoc: maximum thickness for a single layer

Two resin tasks on one table

A 72 × 6 × 1.5 in river holds 2.81 gal before buffers. The finished 72 × 30 in table covered at an illustrative 1/8 in thickness needs another 1.17 gal before edges and runoff. These are separate applications. Do not select a resin solely because it can supply the combined gallons, and do not assume a coating rated for 1/8 in can fill the river in one batch.

Read these fields before ordering

Find the exact product and hardener combination, permitted layer depth and any maximum mixed batch volume.
Check the room-temperature range and the specified time or preparation for another coat/lift. Products sold under the same broad resin category can differ.
Confirm the volume or weight mix ratio. A ratio from one coating must not be reused with a different casting product.
When the depth is outside the published conditions, obtain product-specific instructions rather than extending a generic chart.

Using this guide with the planning tools

Selecting a resin category does not confirm its A/B ratio or allowable lift. The planning tools now leave these unknown until you supply product information. Read the technical sheet for the exact hardener combination and the permitted casting volume and temperature, then use the stated limits for that product only. The epoxy mix ratio chart splits common batch sizes once you know the ratio.

Related calculators and guides

Calculate deep pour epoxy volume, staged lift count, waste, and cost for thick casting projects and resin pours that cannot be treated like a surface coat.

Estimate epoxy for tabletops and flood coats with surface coverage, finish thickness, runoff, waste, and top-coat resin guidance.

Estimate epoxy for river tables with quick mode, segment mode, seepage, seal-coat buffer, cost planning, and deep-pour recommendations.

Reviewed Oct 30, 2026 · Calculation notes and corrections