R-Guard Installation Detail
Overlap/Splice Joint of SureSpan EX

gypsum sheathing/OSB sheathing/plywood

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Apply a 3/8-inch bead of SureSpan Adhesive on both sides of the joint. The 3/8-inch bead will spread to a width of 1/2 inch (minimum 20 mils thick). Sealant coverage may vary depending on the porosity or texture of substrate.



Place the SureSpan EX into the wet sealant using hand pressure to adequately spread the
SureSpan Adhesive onto the extrusion. Small adjustments to the placement of the SureSpan EX may be done at this time, but lifting and re-seating should be avoided and may result in needing additional SureSpan Adhesive installed to fully engage the extrusion into the wet sealant. Use a small roller such as a laminate roller to apply sufficient pressure to set the SureSpan Adhesive.

Vertical joints should be overlapped a minimum of one inch. If mitered or field-cut corners are used, apply enough sealant under the corner joint so the excess sealant fills the miter joint.


Prior to tooling the excess SureSpan Adhesive alongside the extrusion, gun an additional 1/4-inch bead of SureSpan Adhesive to smooth out and counterflash the exposed edge of the extrusion 3/4 of an inch. Tool excessive sealant immediately.

Ted Barnekoff - Air & Water Barriers, PROSOCO

Ted Barnekoff
Product Support - Air & Water Barriers


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