Project Profile: A Missouri Hospital Builds Stronger with EPS

Project Profile: A Missouri Hospital Builds Stronger with EPS
A Montana

A Missouri hospital rebuilds stronger after a tornado largely destroyed most of the health care facility.

Mercy Hospital  |  Joplin, MO.

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After a force five tornado destroyed St. John’s Regional Medical Center on May 22, 2011, the Joplin, MO. hospital rebuilt with a new stronger facility designed to stand up to devastating wind forces.  After the destruction, architects and engineers analyzed how the nine-story structure reacted to the storm.  Today, a new facility stands stronger with a big tornado in mind….Mercy Hospital.

One of the largest changes to the hospital was the roof in an effort to harden the hospital’s building envelope.  More than any other part of a building, its roof system components must complement each other.  Insulation is a crucial component, because it contributes to a roof system’s thermal performance and overall durability while providing a substrate for the roof membrane.  Tapered Insulfoam was used to help the new hospital roof combat strength, water absorption, stability, stable R-Value and excellent performance.

By using Insulfoam 15″ InsulRoof Taper EPS as part of the roof system on the new hospital, the resulting structure is 30% STRONGER than the requirements for the old hospital.


In the old facility, the design team learned that the metal with insulation on top was removed by the tornado and exposed the inside of the building.  The roof is all concrete decks with a double roof system and a waterproof membrane.  The result, if the hospital loses the roof system, there will still be a watertight and concrete-sealed building.



Mercy Hospital, Insulfoam EPS installation

Pre-cut tapered EPS blocks were used to increase roof slope for additional drainage, while offering a long term, stable R-Value, excellent dimensional stability, compressive strength and water resistant properties that meet or exceed the requirements of ASTM C578.  The thick blocks can be factory-cut into single-layer tapered pieces that eliminate the labor of stacking multiple insulation panels.  Tapered EPS can be adapted to accommodate any roof drainage system and roof configuration.

Labor Savings:  There are no complicated filler panel systems.  Tapered InsulFoam can be installed in a single layer for thicknesses up to 40″, making it significantly more cost effective than comparable rigid-insulation tapered systems.  The ultra lightweight nature of Insulfoam EPS further allowed for fast installation.

Promoted Positive Drainage:  Tapered InsulFoam is the ideal insulation for both new construction and re-roofing projects in which positive slope is desired or ponded water is a concern.

Hospital rebuilding

Mercy Hospital, Insulfoam EPS installation

Environmentally Friendly:  100% recyclable if ever removed or replaced.

Stable R-Value:  EPS’s thermal properties will remain stable over its entire service life.  There is no thermal drift, so the product is also eligible for an Insulfoam 20-year thermal performance warranty.

Proven Performance:  The same fundamental EPS chemistry has been in use since the mid-1950’s so the actual performance of the product is well known.

Water Resistance:  Tapered Insulfoam does not readily absorb moisture from the environment.

Code Approvals:  Tapered Insulfoam is recognized by the ICC-ES, and has numerous Underwriters Laboratory and Factory Mutual approvals.




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