Phase-change core
Mineral salt hydrates that melt and re-solidify at a selected temperature, absorbing and releasing large amounts of heat while their temperature holds.
Technology
How EnigMAT™ works.
Simple solution. Surprising performance.
Heat always flows from warm to cool. How much flows depends on two things: the temperature difference, and how easily the path conducts it. Insulation works on the path. EnigMAT works on the difference.
We didn't invent phase change. Nature did.
The 143-BTU secret.
Warming a pound of water by one degree takes one BTU. The same is true for a pound of ice — at every temperature except one. At 32 °F, turning that pound of ice into water takes 143 BTU, and the temperature does not move at all while it happens. That same energy would take water from 33 °F to scalding 175 °F.
EnigMAT puts that effect to work at the temperatures where people live and work. Its mineral core is formulated to melt and re-solidify at a chosen point — for example 82 °F instead of 32 °F. While it melts, it absorbs heat and holds its temperature. When the air cools, it re-solidifies and gives the heat back.
Think of it as ice that melts at 82 °F — and refreezes every night, for decades.
A 24-hour cycle
Absorb by day. Release by night.
In the afternoon, heat coming through the roof or wall melts the core instead of reaching the room. At night, cooler air draws the stored heat back out and the core re-solidifies, ready for the next day. In winter the same cycle works the other way: it holds heat in the building and gives it back in the cold hours.
- No power, no sensors, no controls. The cycle runs on the weather.
- Peaks flattened and delayed. The heat that does arrive comes hours later, when the day is over and demand on the grid is lower.
- Smaller loads on HVAC. Equipment runs less, cycles less, and can be sized smaller in new work.
Three technologies in one mat
Thermal mass, reflection and phase change — in less than half an inch.
Low-emittance reflective film
The patented foil laminate reflects radiant heat the way shade does on a sunny day. Installed facing an air space, it also adds reflective insulation value.
Thermal mass without the weight
Lightweight buildings — metal, modular, wood-frame — gain the steadying effect of heavy masonry, at typically under 2 lb per sq ft.
Better than R-value
Make the insulation you already have work many times harder.
Picture an attic at 140 °F over a room set at 75 °F, with R-20 on the attic floor. The insulation is fighting a 65 °F difference. Lay a blanket of 82 °F EnigMAT on top of it: while the core is absorbing heat, the air above the insulation is held near 82 °F — and the difference across the R-20 drops from 65 °F to 7 °F.
Heat flow through insulation is the temperature difference divided by the R-value. Same insulation, a fraction of the push: about 3.25 BTU per sq ft per hour becomes about 0.35.
That is the whole idea: EnigMAT controls the delta — the temperature difference — across the insulation layer. Zero delta, zero heat flow.
Illustrative example during the hours the core is changing phase. Actual results depend on the attic, the climate and the transition point selected. EnigMAT has no fixed R-value and none is claimed.
Measured, not promised
145 °F on the surface. Never above 96 °F in the layer.
Syndego tests every formulation on a proprietary apparatus that simulates the sun rising and setting over 24 hours, reading four points every four minutes. In this test the sunlit surface peaked at 145 °F. The EnigMAT layer peaked at 94 °F almost seven hours later — after dark — and never exceeded 96 °F over two days. The conditioned space stayed between 79 and 83 °F.
Sunlit surfaceEnigMAT layerConditioned space
Syndego LLC in-house test apparatus, test of March 3, 2022 — readings every 4 minutes over about 40 hours. Peak of the layer after the peak of the surface: about 7 hours on day 1, about 2½ hours on day 2.
Choosing the transition point
Matched to your climate — not one-size-fits-all.
EnigMAT is made in several transition temperatures. The right one sits just above your thermostat set point and just above your overnight lows, so the core can release its heat every night and be ready again the next afternoon.
- Overnight lows come first. A 72 °F grade would be almost useless in Phoenix in July: the nights never drop below 72 °F, so the core could never re-solidify.
- Then daytime highs and sunlit surfaces. Roofs and west walls see far higher temperatures than the air.
- Then the building. Set points, occupancy, ventilation and where the layer sits in the envelope.
- Cold grades too. Formulations below freezing are used for coolers, freezers and refrigerated transport.
Engineered to last
Why these salts keep working — cycle after cycle.
Salt-hydrate phase-change materials have been studied for decades; early products lost performance within a few years. Syndego's formulation and packaging were engineered around the three reasons they failed.
Moisture locked in
Every cell is heat-sealed in a multilayer foil laminate with an extremely low water-vapor transmission rate, and the formulas are balanced to offset any small gain or loss over the years.
No settling
Crystal modifiers and natural clay thixotropes keep the salts suspended, and small cells limit the effect of gravity — so every crystal keeps taking part in the reaction.
Room to breathe
Each cell keeps about 20% empty space for the change in volume between solid and liquid. A puncture affects one small cell only — about a tablespoon of pudding-like material.
Safety & environment
Mineral, not petroleum.
- Class A fire rating — ASTM E84 surface-burning test: Flame Spread Index 5, Smoke-Developed Index 5. The salt core does not burn.
- Non-toxic — naturally occurring mineral elements; no VOCs, no plasticizer emissions.
- Nothing for pests — neither the core nor the film is food or nesting material for vermin.
- Abundant raw materials — naturally occurring and widely available from many sources.
- Saves water, too — U.S. national-laboratory estimates put water lost to evaporation at roughly 2 gallons for every kWh generated. Every kWh EnigMAT avoids saves that water as well.
Specifications
| Construction | Sealed cells of phase-change core in a quilted, heat-sealed multilayer foil laminate with a low-emittance face |
|---|---|
| Core | Naturally occurring mineral elements: salt hydrates with crystal modifiers and natural clay thixotropes |
| Thickness | Less than ½ in |
| Mat width | Up to 43 in |
| Weight | 6 oz to 2 lb per sq ft, depending on thermal capacity |
| Transition points | Selected by climate — comfort grades across the 60–90 °F range; cold grades for refrigeration |
| Fire | Class A, ASTM E84 (FSI 5 · SDI 5) |
| Power · controls · maintenance | None |
| Warranty | 20-year written warranty |
| Service life | Reported to exceed 50 years |
| Installation | Laid over existing insulation or ceiling tiles; stapled under roof decks and in crawl spaces; on wire mesh under metal decks; inside wall assemblies |
Test reports and technical documentation are available on request.
See it in your climate
Run your building through ten years of local weather.
The EnigMAT configurator selects the transition point for your location and estimates peak cooling, comfort hours and energy — in °F and square feet.