MEKP Calculator
The closest thing we found to real competition is a generic online percentage calculator. It says right on the page that it's not a safe way to pick your mix rate.
| Feature | ChemCalc | Closest competitor |
|---|---|---|
| Is there a calculator at all | Yes | Has it: Yes — but a major MEKP supplier themselves only publish a static chart, not a tool |
| Resin types | Polyester, vinylester, and gelcoat — one calculator covers all three | Lacks it: Gelcoat only, no resin-type choice |
| Does temperature matter here? | Yes — tells you what band you're in and adjusts for it, °F or °C, your choice | Lacks it: Not used at all — the page says so directly |
| Known brands built in | Duratec support built in | Lacks it: None — you need to already know your target percentage |
| Safety guidance | Gives you a heads-up based on the temperature band you're in | Lacks it: Comes with a disclaimer that it doesn't establish a safe mix rate |
| Can you trust the numbers | Checked against real manufacturer data, with hand-validated temperature bands | Lacks it: Plain arithmetic, no manufacturer data behind it |
Awlgrip Coatings Calculator
We checked — nobody has built a mixing calculator for these products. The manufacturer's only tool is a color-matching guide for distributors, not something that tells you how much to mix.
What ChemCalc does
- How you tell it what you're coveringDoes the math for you — and lets you choose how: the actual area, the total volume to mix, or just width × height
- Products covered6 Awlgrip products — Topcoat, Awlcraft 2000/3000, 545 Epoxy Primer, Awlcraft SE, HDT Clear
- Spray vs. brush/rollChanges the mix automatically depending on how you're applying it
- UnitsImperial or metric, your choice
- How much it'll coverGives you a real coverage estimate, so you know roughly how many coats you'll need
- Accelerator (hardener speed)Pick Pro-Cure X-98 or X-138 and it shows you the dose, max working temp, and cure time side by side
- Heads-up on gotchasTells you the gotchas for whichever product you picked (for example, Awlcraft SE: no accelerator needed)
- Can you trust the numbersChecked line by line against the real spec sheets — mix, coverage, and accelerator dose all come straight from Awlgrip's own data
Independent & unofficial — ChemCalc isn't affiliated with or endorsed by the maker of Awlgrip.
Epifanes Polyurethane Paint & Varnish Calculator
Nobody has built a calculator for mixing Epifanes products — not Epifanes, not anybody else.
What ChemCalc does
- Is there a calculator at allYes
- Products covered6 products — Clear Gloss, Clear Satin, Colour/Yacht Coating, in both Standard and Speedcoat
- Application methodBrush/roll or spray for Standard; spray-only for Speedcoat
- How guys actually mix itStraight 2:1 — specified by weight, with the calculator giving you the volume equivalent so you know exactly how much of each you need
- Still need to measure it yourself?Yes — the calculator gets you the right amounts, but you still need a scale, cup, or marked stick to pour it out
- Thinning guidanceTells you how much to thin it, specific to the product and method you picked
- Can you trust the numbersChecked against the real spec sheet — recoat time and pot life both taken straight from it, not estimated
- Honest about what's not built yetSkipped Polyurethane Primer on purpose — waiting on a straight answer from the manufacturer instead of guessing
Independent & unofficial — ChemCalc isn't affiliated with or endorsed by the maker of Epifanes.
Fiberglass Cloth Saturation Calculator
The closest real competitor we found is a materials calculator from a fiberglass supply company. Everyone else just publishes a static chart or a rule of thumb.
| Feature | ChemCalc | Closest competitor |
|---|---|---|
| Is there a calculator at all | Yes | Has it: Yes, genuinely interactive |
| Resin type | Pick polyester, vinylester, or epoxy — the math changes for each | Lacks it: One fixed ratio no matter what resin you're using |
| Materials covered | Mat, woven roving, combo mat, cloth, carbon fiber, Kevlar | Lacks it: Only their own fabric lineup |
| Where the ratio comes from | Real hand-layup practice — checked against an actual test pour, within about a cup of a gallon | Lacks it: A fixed multiplier, with no supporting numbers shown on their page |
| Does temperature matter here? | Yes — same temperature guidance as our MEKP calculator, by resin type | Lacks it: Not mentioned |
| Epoxy-specific help | Tells you fast vs. slow hardener and steers you to the right product for natural-wood finishing | Lacks it: Not mentioned |
| What you get at the end | Full resin-to-hardener breakdown for epoxy; straight resin amount for polyester/vinylester | Lacks it: Just one resin number |
Alexseal Yacht Coatings Calculator
Nobody has built a calculator for mixing Alexseal products — not the manufacturer, not any retailer, not anybody. Same story as Epifanes.
What ChemCalc does
- How you tell it what you're coveringDoes the math for you — and lets you choose how: the actual area, the total volume to mix, or just width × height
- Products covered3 products — Premium Topcoat 501, Finish Primer 442, Protective Primer 161
- Accelerator (hardener speed)Shows the right accelerator for each product — and doesn't show one at all for the one product that doesn't use it
- Mixing ratioExact ratio for the product and method you picked, calculated live
- How much it'll coverShows real coverage numbers as a reference, not something we quietly bake into the math for you
- Finding the manufacturer's own paperworkLinks straight to their real spec sheet library
Independent & unofficial — ChemCalc isn't affiliated with or endorsed by the maker of Alexseal.
Why you can trust the numbers
Being first doesn't mean much if the math is wrong. Every calculator is checked against the manufacturer's own data, line by line, before it ever reaches you.
- AwlgripChecked line by line against the real spec sheetsMix ratio, coverage, and accelerator dose all come straight from Awlgrip's own published data.
- FiberglassTested against a real resin pourOur hand-layup ratios were checked against an actual pour, not just worked out on paper — within about a cup of a gallon of what the cloth actually took.
- EpifanesRecoat time and pot life straight from the spec sheetBoth figures come directly from Epifanes' own documentation.
- MEKPTemperature bands hand-validatedChecked against real manufacturer data, band by band — not one blanket number for every condition.
- AlexsealLinks straight to the manufacturer's own paperworkEvery Alexseal product in the calculator links back to Alexseal's real spec sheet library, so you can check the numbers yourself.