MALogan Airport Hilton EMSEAL Seismic Colorseal

(BOS) Hilton Boston Logan International Airport, Boston

Massachusetts

Date: 1998

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan

Watertight, insulated, non-invasive, attractive–moving.

Skywalks at Hilton Hotel, Logan International Airport sealed with Seismic Colorseal by EMSEAL.

A pedestrian sky-bridge connects central parking with the Logan Hilton hotel. At each end of the skybridge are structural expansion joints to absorb the expansion and contraction of the sky-bridge as well as any possible sesismic movements.

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan sky-bridge to hotel

Sealing between the curtain-wall mullions of the sky-bridge and the precast concrete panels of both the garage and the hotel facade required a joint system that promised continuity of seal through all the direction changes and featured the practical ability to be installed where there is obstructed access at inside corners.

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan sky-bridge to hotel

In addition, the material must be watertight, look good, thermally insulate, block sound, resist air-pressure differentials, and must do all of this while moving through extreme seasonal temperature cycles.

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan project specific strip seal

Note: Specified for this project was a non-watertight “strip seal”.  Invasive anchors would not only violate the mullion integrity, but made it impossible to install this type of system into the inside-corners.  In addition it would have been impossible to make the rubber seals continuous in all the direction changes.  Finally, strip seals impart no R-value at joints as the aluminum rails and screws are a thermal bridge and rubber has little insulation value.

EMSEAL Seismic Colorseal Expansion Joint Hilton Boston Logan sky-bridge to hotel

Aesthetics: The appearance of the seal making the intersection between the curtainwall and the masonry is critical to the architect and owner.

Selection of Gray from the standard 26-COLORS makes the seal appear an integral part of the skywalk curtainwall system

EMSEAL Seismic Colorseal Expansion Joint Hilton Boston Logan sky-bridge to hotel

Seismic Colorseal by EMSEAL uniquely handles all of the challenges posed by this application.

Non-invasive anchoring ensures that the metal framing of the skylight and other substrates is not violated.

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan sky-bridge to hotel

High wind resistance–Curtainwall systems are required to be tested to meet the ASTM performance tests E-293, E-331, and E-330. Sealants generally are not. To us it makes sense that the expansion joint sealant that will connect the curtainwall to the building should be independently certified to meet the same criteria. Consequently, we have tested Seismic Colorseal to meet or substantially exceed these same standards.

EMSEAL Seismic Colorseal Expansion Joint Hilton Boston Logan sky-bridge to hotel

Multiple changes in plane and direction are readily handled through field mitering and splicing. Using joining silicone supplied from the same batch used to manufacture the coating ensures continuity of seal throughout the expansion joint run.

EMSEAL Seismic Colorseal Expansion Joint at Hilton Boston Logan sky-bridge to hotel

Thermal Insulation: Because skywalks are suspended, expansion joints are particularly susceptible to allowing thermal loss. Seismic Colorseal has an R-value of 2.15 per inch of depth giving this application an R-rating of more than 8.5 at the joints.

Seismic Colorseal is one of the hugely versatile family of cutting edge hybrid sealing technologies available from EMSEAL