EcoMasonry | HyFibe | HyPlast

Introducing HyPlast, the first carbon-negative interior plaster that is non-toxic, insulating and bio-renewable based

A Sustainable Wall Plaster!

HyPlast ia a hemp based plaster that is perfect where one coat applications are desired; applications of up to half an inch thick are possible without any signs of cracking. A smooth surface is attainable, rich in hemp fiber that will easilly accept your finish paint, stain or plaster coat whether it be lime, clay or gypsum based.

There are a variety of hemp shiv sizes to create different tectures.

HyPlast is breathable, moisture regulating, crack-resistant, carbon-neutral, non-toxic, insulating, impact-resistant, enhanced thermal-mass performance with added phase-transitional powders, Can be used as a decorative finish coat, can be stained, painted or plastered without any additional treatment, easy to apply - does not need mesh of any kind, bonds well to most surfaces.

Phase-transitional Enhancement

Thousands of small spherical globes, filled with a special wax that is set to melt at 80 degrees farenheit, are added to the mix to increase the thermal performance of the finished plaster many fold. Like ice there is a large amount of energy released and absorbed during the transition from one state to the other.

The thermal mass effect of 1/4" of plaster treated with these spheres is increased equivalent to 2-3 inches of concrete. This is enough to capture large amounts of the heat generated from the in-wall hydronic heating system that is then slowly radiated into the home over several hours.

During the summer this concept is used to cool the house. The inside heat is absorbed into the spheres as they transition from a solid to a liquid state. The heat is then transferred through the blocks to the cool outside of the night. The cooling effect experienced can be as much as 6-7 degrees during these transitions.

Phase Change Materials (PCMs) store energy by changing phase from solid to liquid (i.e. melting) and releasing heat by changing phase from liquid to solid (i.e. freezing). Phase change materials provide a large heat capacity over a limited temperature range. They act a little like an isothermal reservoir of heat. A range of PCMs are being evaluated, all with a melt/freeze temperature of about 40oC. The choice of the most appropriate PCM is based on a number of factors, including cost, latent and sensible heat, and thermal conductivity in both the liquid and solid phases and its effect on the overall thermal performance of the complete system.