Waterproofing Roof to Wall Expansion Joints at Kansas City International Airport Single-Terminal

Waterproof roof to wall expansion joints should always start with a drawing to accurately convey the application. Here a parapet expansion joint detail drawing produced from field measurements guides the work of Sika Emseal’s weld team. RoofJoint was factory welded to transition of the expansion joint, roof scupper, and parapet. A factory welded downturn transition to the exterior wall is sealed with a RoofJoint Closure which connects to Seismic Colorseal.

RoofJoint is factory welded and installed to account for the 3 different conditions all intersecting each other. At the end of the roof, a factory-fabricated RoofJoint Closure creates a seamless and watertight transition down the exterior wall to Seismic Colorseal.

This image shows a continuous waterproof expansion joint from the upper roof to the exterior wall, down the façade, and into the lower roof. Continuity of seal is ensured by incorporating factory welded transitions at both locations. A RoofJoint Closure is utilized at the downturn at the top of the wall, and a factory supplied “boot” termination at the bottom. Seismic Colorseal marries into each of these pre-welded pieces to preserve continuity of seal between the upper and lower roofs.

A roof to wall expansion joint cover transition with Seismic Colorseal and RoofJoint closure piece at the roof edge. Notice a roof scupper detail needed to be accounted for in the factory-welded RoofJoint flanges to wrap the corners of this transition.

RoofJoint runs along top of a roof curb, then doglegs horizontally then turns down to Seismic Colorseal at the vertical exterior façade. A RoofJoint Closure is incorporated to ensure continuity of seal. All of these transitions are factory-welded by our expert weld team.

Here is another upper to lower roof adjoined by a wall. At the top, RoofJoint downturns to Seismic Colorseal with a factory-fabricated RoofJoint Closure. Seismic Colorseal then continues down the metal panel façade and transitions under the soffit with a Universal 90 Transition. Colorseal continues down the wall where it terminates into a RoofJoint “boot”. Continuity of seal is maintained to ensure watertight, trouble-free expansion joints even with these dissimilar materials and directional changes.

Precompressed foam joints are ideal for inside corner wall conditions. The backpressure from the foam is what ensures this 9-inch (225mm) wide Seismic Colorseal remains in place.
Non-invasive anchoring is crucial for these corner conditions, as it can be almost impossible to maneuver a drill into place to secure a mechanically fastened joint.