The transition from roof expansion joint to wall expansion joint has been a long overlooked condition. Making this plane change has historically been left to cobbling together the roof system and the wall expansion joint with caulk and flashing. RoofJoint from Emseal is married to Seismic Colorseal through a factory-fabricated roof joint closure. The underside of the RoofJoint extrusion matches the profile of the closure. The interface is sealed with silicone provided. The factory welded, reinforced, and leak tested downturn in the RoofJoint can be factory welded to long lengths of straight run material, minimizing field welds.
Complex expansion joint transition for vegetative green roof RoofJoint RJ-0400. Dog-legged deck-to-wall condition on right side of image is intersected by oblique-angled tee by deck-to-deck straight run.
The wall to below-grade transition is critical and very often overlooked. With Seismic Colorseal in the walls and a factory-fabricated boot transition in the BG System, the designer can specify with confidence continuity of seal.
Below-grade expansion joint transition from underslab to foundation wall - Emseal BG System
BG System, below-grade expansion joint with factory-welded upturn both ends at offset foundation walls.
After being thoroughly welded across the entire cross-section of the mitered face, every weld made in our thermoplastic-rubber extrusions is reinforced on the top and bottom sides with a welded reinforcing band. The bands are heat-blended into the main extrusion. You can achieve about 80%
The top surface of this Thermaflex TCR parking deck expansion joint gland is receiving a welded reinforcing band. The next photo shows how the reinforcing band band is blended into the seal for aesthetics.
Blending the welded reinforcing band into the topside of our extrusions serves only to make the product look better. Care is taken to ensure function and form. This is our Thermaflex TCR winged seal--part of Emseal's complete offering of solutions for parking deck expansion joints.
Factory fabricated custom 90-degree tread and riser stadium expansion joint transitions in our DSM System allowed teh contract to step up the stadium bowl. Emseal's approach to stadium expansion joint sealing has become the standard and sets the bar for sports facility construction. Field measurements of each tread and riser are communicated to Emseal. Our CAD engineers translate these into shop drawings and production tables. See the custom-90's installed in the next image.
Expansion joint shop drawings produced from field measurements guide the work of EMSEAL's weld team. For this project, RoofJoint was shaped to the radius of a curved expansion joint in a buried plaza deck application.
Factory-fabricated to follow the radius of a curved plaza expansion joint, RoofJoint can be factory-fabricated to address the most complex building conditions.
Complex transitions in plane and direction are available in all Emseal systems including our "rubber and rail" systems for plaza decks
RoofJoint with a parapet termination that goes up the face, over the top and down to the wall expansion joints. This transition is part of the long, straight-run of joint coiled up on the skid. A similar parapet termination will be field-welded at a butt splice after trimming the straight run to fit. When the applicator engages in our presale quality assurance approach, they save money in time, labor and mobilization costs, AND the factory transitions are warranted by Emseal. The owner is the ultimate beneficiary.
This Thermaflex TCR parking deck expansion joint runs across the deck and tees then doglegs around a column and continues deck-to-wall at the egress wells. The flange on a wall side is welded to sit against the wall. This flange is also supplied unpunched to better ensure waterproofing. All the welds throughout the transition are reinforced, blended, and leak checked.
Your looking at the bottom side of multiple dog-leg transitions in Thermaflex fitted with shear pockets. On parking decks where single-column design used, expansion joints dog-leg around the column caps that support adjacent slabs on slide-bearing haunches. The movement that is normally perpendicular to the run of the joint (and in direction that EJ extrusions are designed to compress and expand) becomes movement in shear--perpendicular to the run of the joint. In these short offsets, shear pockets remove the strain in the material and prolong service life.
This coil of Thermaflex TCR has a factory-attached "boot termination" on one end. The other end, seen nested in the coil, will have a similar factory-fabrication boot attached using a butt weld made in the field by the applicator. Boot Terminations provide a dam to prevent water from running off the edge of a deck at parapet or other walls. The boot additionally provides a receptacle into which Seismic Colorseal used to seal the wall joint will terminate.
This is a great example of two different expansion joint technologies working together to ensure continuity of seal. This engineer addressed an owners desire to close the gaps between parking deck split columns. Factory-fabricated double-downturns were made in the Horizontal Colorseal precompressed foam system. These terminated in factory-welded Boot Terminations in the Thermaflex TCR winged seal system. The vertical flanges of the boots can bee seen to be attached to the column faces with termination bar and anchors. The top edge of the term bar is sealed with sealant.
The owner's desire to keep water, trash, and vermin from dropping between floors was elegantly addressed.
SJS-FP is a highly versatile system for concourse, parking, stadium, and airport floors and decks. Often joints jog in direction. Here, the FP legs, rails and capping strips, have been factory-welded and assembled to match the field measured dimensions of a concourse jog. This spec calls for a continuous, integral, non-slip cover plate as well. See the next image of the cover plate configuration.
SJS-FP expansion joint transition with integral factory-fabricated, non-slip, cover plate.
The applicator on this Thermafelx job, understanding the value of not doing any field welding, provided accurate enough measurements for us to weld boot terminations on both ends of each run of joint.
Parking expansion joints frequently run
Thermaflex TCR with shear pockets undergoes leak factory leak testing. Another way expansion joints intersect columns is where the mid-span joint tees into a perimeter joint around the column. Usually left to be field joined and caulked, this detail is a chronic leaker. Leaving nothing to chance and ensuring long-term durability and waterproofing, this specifier called for factory-fabricated tees, flat 90's, and end-dams. But that's not all. They also opted for Emseal's unique Shear Pockets. The shear pockets allow a full range of movement while reducing the strain in the rubber. In this photo, the shear pockets are being leak tested with water before final packaging.
Crosses and tees are commonly encountered transitions on parking decks. They are just as often a place that leaks. Field-welding these transitions takes multiple
As common as cross transitions are in expansion joint design and construction, they are equally as often not crosses. They are just as likely to be offset as line up. In this case the centerline of the joint was offset by a couple of inches. The result is really two tees in the RoofJoint system. Regardless, Good field measurements combined with Emseal's ability to make them a reality, resulted in a watertight, welded, reinforced plug and play expansion joint transition.
14-inch (350mm) wide seismic expansion joints need proper terminations and transitions too. Here, the SJS SYSTEM is shown before installation of the cover plates. The upturn was supplied as factory-fabricated one-piece assembly connected to the horizontal joint. Aluminum hanger bars hold the joint a the proper installation height while the backpressure of the precompressed self-expanding foam locks into and adheres to the epoxy adhesive applied by the applicator to the joint faces. As the non-skid cover plates are installed, the hangar bars are removed (see next image).
Here, the SJS System is shown with cover plates installed up to the factory-fabricated 90-degree-upturn termination. The cover plates anchor to the central spline in the SJS System. This means it is non-invasively anchored--so no hard connections to the concrete at all. During movement the decks on either side simply slide beneath the cover plate.
We're not sure how it got there, but a little jog in the roof expansion joint is as likely to cause a big leak as any intentional offset. Here the RoofJoint has been configured to ensure this small detail doesn't become an outsized problem for the owner.
These are lying on their backs but turn them over and you'll see they're parapet transitions that run down the face of a cantilevered roof edge AND transition to the underside of the soffit.
For this deck-to-wall roof expansion joint, Emseal's weld team have factory-welded a wall-side flange.
Lying upside down on a welding table is RoofJoint with a factory-welded Tee. The schematic shows the complicated field conditions for this job. Can you see on the drawing where this Tee fits into the job>
Why go the trouble of sealing the deck joint only to have wind-driven rain pour down below decks through the split column? Here's a great example of a parking deck expansion joint transition to a wall expansion joint. Thermaflex in the deck with a factory-fabricated upturn transitions to Seismic Colorseal in the joint between the split columns.
What do you think L.C. means? Look in the inside and outside elbows of the welded curb transition in this Thermaflex TM sealing gland. The letters LC mean "Leak Checked." This means the weld-team have filled the inside of the gland with water and monitored it for leaks. While extremely rare, if leaks do show up during this quality assurance step, the weld would be repaired and leak checked again before shipping. If this weld was made in the field by the applicator, it is not likely to be leak checked nor is it practical to do so.
Not all curbs are equal. They vary in height and in this case angle. These curbs are slightly off 90-degrees and slope toward the sidewalk. The applicator, in their presale quality assurance field measuring, provided not only the height of each of dozens of curb locations but the precise angle as well. Our engineering team created expansion joint shop drawings from which the weld team produced these transitions. Each weld is seen to be reinforced with an added, welded reinforcing band that is further blended into the Thermaflex TM 1.5 seal. And of course, each weld was leak checked before shipping.
Complicated parking deck expansion joint layouts are commonplace. This shop drawing is a great example of the multitude of transitions on a project. Each condition is unique in its dimensions. Depending on the level of the parking deck, column transitions are either deck-to-wall on deck-to-deck. Every change in direction and plane was factory fabricated to fit field measurements. Do you see the notation in the top left of the shop drawing? It indicates that the Thermaflex TCR 400 multi-celled, winged compression seal style gland is predominant. However, the joint-gap is smaller than suits this model in some places requiring a switch to the Thermfaflex TM 2.5 double-cell gland. This transition between seal geometries and sizes can only reliably be accomplished using Emseal's Shear Pocket invention.
This 2-inch offset in alignment of the roof expansion joint and the wall expansion joint was probably caused by a disconnect between trades, or maybe as the result of tolerance buildup. Regardless, the joints in wall and the roof didn't line up.
Good field measurements by the applicator allowed us to make a continuous factory-welded transition in RoofJoint that jogs through the offset and then turns up the wall. The upturn in RoofJoint goes above the anticipated snow line. The upturn terminates in a boot transition into which Seismic Colorseal wall expansion joint will be installed. Continuity of seal is assured.
Roofing contractor fits the factory-fabricated RoofJoint roof edge downturn transition over the Seismic Colorseal RoofJoint closure. This unique assembly (see model in next image) assures a weather tight transition from the roof to the wall. This expansion joint case study shows more on how RoofJoint is used to provide a unique approach to roof expansion joint sealing.
This 3-D rendering shows the transition of RoofJoint via a Seismic Colorseal RoofJoint Closure to the exterior wall joint. Coping flashing with an overlapping sliding feature can be specified to obscure the transitions between the RoofJoint extrusion and the Seismic Colorseal.
RoofJoint Closures are available for both cavity-wall designs and sold-backup-wall designs.
Some transitons CAN be field executed and are routinely in precompressed foam sealant expansion joints like DSM System. Here intersecting tees are field made by butting the end of the intersecting material into the side of the already installed run. The intersecting silicone bellows is joined with a field application of supplied liquied siliicone.
A custom-welded tee and deck-to-wall transition in Thermaflex TCR features two boot terminations and a custom wall flange to ensure the transition at a shear wall is properly sealed.
Flat 90 and cross assembly Migutan FP plaza expansion joint. The entire assembly will drop into place ensuring that wall aluminum legs, and stainless steel capping strips will be properly cut, and firmly aligned. The labor savings and quality of this approach is clear. The side flashing sheets for integration into the buried deck waterproofing system will be similarly factory welded as will the central sealing insert.
Expansion joint shop drawings produced from field measurements guide the work of EMSEAL's weld team. For this project, RoofJoint was factory welded to transition at 3-way intersection of a roof scupper, a flat roof to roof corner parapet.
Factory welded and installed to account for the 4 different conditions all intersecting each other at the end of the roof.
