Materials & Quantities

Epoxy Terrazzo Resin-to-Aggregate Mix Calculator

Calculate the resin and aggregate mass needed for an epoxy terrazzo floor pour, from a target resin:aggregate ratio.

  • Answers as you type
  • Every formula cited
  • Calculated in your browser
SettingsSettings for this calculationUS
Market
Imperial · sales tax
The total floor area to be poured with epoxy terrazzo.

Measure the room's length x width, or add up multiple sections for an irregular floor plan.

The thickness of the terrazzo topping pour.

Epoxy terrazzo toppings are typically much thinner than traditional cement terrazzo, commonly 6-10mm.

The density of the fully blended resin-and-aggregate mix.

Check your specific terrazzo system's technical data sheet for its blended mix density — it varies with the aggregate type and gradation used.

How many parts of aggregate are used per one part of resin, by weight.

Commonly specified in the range of 1:3.5 to 1:4 (resin:aggregate) — confirm your specific manufacturer's system ratio.

Aggregate mass needed

694 lb

Medium confidence

Exact resin:aggregate ratios vary by manufacturer system and desired aggregate exposure — confirm your terrazzo system's specified ratio before ordering material.

Resin needed
198.38 lb
Total mix mass
892.72 lb
Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • Epoxy terrazzo mixes are typically specified by a resin:aggregate ratio by weight (commonly around 1:3.5 to 1:4); total mix mass = pour volume × blended mix density, split proportionally by the ratio

Inputs used

Pour Area
220 sq ft
Pour Thickness
0.39 in
Blended Mix Density
124.86 pcf
Aggregate-to-Resin Ratio (parts aggregate per 1 part resin, by weight)
3.5

Intermediate steps

Resin needed
198.38 lb
Total mix mass
892.72 lb
Final result694.34 lb

Confidence note: Exact resin:aggregate ratios vary by manufacturer system and desired aggregate exposure — confirm your terrazzo system's specified ratio before ordering material.

What this calculation does not cover

  • Multiplies a nominal thickness by an area, and neither the slab nor the finish is that tidy. Terrazzo fills every low spot in the floor it is placed over and is then ground back, so the material genuinely consumed is the nominal thickness plus what the substrate's flatness swallows plus the grind allowance. Order to the nominal figure over an unprepared, out-of-tolerance slab and the last section comes up short.
  • Resin is given as a mass, and epoxy is bought as kits with a fixed part A to part B ratio and a pot life measured in minutes. A kit cannot be part-mixed to hit a number, and anything mixed but not spread inside the pot life is scrap — so the order is whole kits rounded up, with batch size matched to how fast the crew can place it.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

epoxy terrazzo 0.39 inepoxy terrazzo 9.91 mmfloor slab

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-06 · in the site-wide review of 2026-09-06 · v1.1.1

Regulatory standards & verification citations1
  1. Epoxy terrazzo mixes are typically specified by a resin:aggregate ratio by weight (commonly around 1:3.5 to 1:4); total mix mass = pour volume × blended mix density, split proportionally by the ratio
Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Now that you have the number

These guides cover the work this quantity is for.

Still deciding? Terrazzo vs Epoxy Resin Floor — the factors that actually differ, with no invented prices.

How to calculate epoxy terrazzo resin-to-aggregate mix in 5 steps

  1. Pour AreaThe total floor area to be poured with epoxy terrazzo.
  2. Pour ThicknessThe thickness of the terrazzo topping pour.
  3. Blended Mix DensityThe density of the fully blended resin-and-aggregate mix.
  4. Aggregate-to-Resin Ratio (parts aggregate per 1 part resin, by weight)How many parts of aggregate are used per one part of resin, by weight.
  5. Aggregate mass neededThe tool computes the aggregate mass needed from those figures and shows the formula, its sources, and a confidence rating alongside it.

Aggregate mass needed by pour area

Page defaults, not your figures above.

Pour AreaAggregate mass needed (lb)
100 sq ft319
150 sq ft478
200 sq ft637
250 sq ft797
300 sq ft956
350 sq ft1,115
400 sq ft1,274

Frequently asked questions

Why is resin mass calculated from the total mix mass rather than directly from area?
Because epoxy terrazzo is specified as a ratio of aggregate to resin by weight within the total blended mix. So the total mix mass (from pour volume × density) is split proportionally: resin is 1 part out of (1 + ratio) total parts, and aggregate is the remainder.
Does the ratio affect the total mix mass?
No — the total mix mass depends only on pour volume and blended mix density. The ratio only determines how that fixed total mass is divided between resin and aggregate.
Where do I find my product's exact ratio and density?
These vary by manufacturer system and by the aggregate gradation and exposure look you want, so always confirm the specified resin:aggregate ratio and blended mix density on your terrazzo system's technical data sheet before ordering material.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.