To a Tee.
by William Lotz
A new system from Dryvit, called Exsulation,
is installed over rigid fiberglass insulation
rather than EPS. Another key difference from
its peers: It's mechanically fastened, so it can
go over virtually any substrate.
Exterior insulation systems with expanded
polystyrene (EPS) insulation
and acrylic stucco were developed after
World War II in Germany, and
exported to this country in 1969. The
systems are especially popular for retrofitting
existing, uninsulated masonry
buildings. They are also increasingly
popular in southern climates for new
residential and commercial construction.
Many to Pick From
Dozens of manufacturers are selling
variations of the system. Some sell the
components and instructions to anyone,
and some sell only to approved, trained