Drywall consists of gypsum sheets (sheetrock) screwed to the studs. Drywall compound is coated over the fasteners to cover up the heads. A drywall finish product includes a final skim coat similar to plaster, but its durability is underwhelming when compared to cement-like plaster. Installing, sanding, and finishing drywall also comes with a lot of dust. Modern plaster is typically applied over a special type of board called “blue board”. Blue board looks like sheet rock, but is designed to handle the high degree of moisture in wet plaster, and it creates a tight bond with the plaster. Plaster is applied in multiple coats with a scratch, then finish coat. Plaster covers the entire surface.

Plaster keeps your house insulated and draft free. Plaster covers your entire wall, filling pre existing cracks with an added layer of insulation. Furthermore it offers a thermal mass to help moderate seasonal and daily fluctuations in the outside air temperature. That means plastered buildings stay warmer in winter, and cooler in summer for year round comfort and energy efficiancy.