The joint between a window or door frame and the rough opening is where most drafts, wind-driven rain and heat loss get into a wall. Framing is cut loose for shimming and squaring, and that deliberate gap has to be closed with something that stays sealed after the unit is fastened and the trim goes on.

This is a sealant intended for exactly that perimeter joint. It is applied after the unit is set, shimmed and fastened but before casing, brickmould or interior trim covers the opening, filling the void between the jamb and the framing so the assembly reads as a continuous air and water barrier rather than a hole with a window in it.

Because a frame and the surrounding framing move at different rates through the seasons, a sealant used at an opening has to stay flexible rather than cure hard and crack away from one side of the joint. Sealants sold for window and door work are formulated with that movement in mind and for adhesion to the mix of substrates found at an opening.

Key Features

• Formulated for the perimeter joint between a window or door frame and the rough opening, the most common point of air and water infiltration in a wall assembly
• Closes the shim gap left for squaring and plumbing a unit without requiring the gap to be packed with insulation alone
• Stays flexible after cure so the seal is not broken by seasonal movement between the frame and the surrounding framing
• Adheres to the substrates typically present at an opening, including wood framing, vinyl and clad frames, and metal
• Applied after the unit is set and fastened and concealed by casing, brickmould or interior trim, so appearance of the bead is not a finish concern
• Supplied as a single-component product in a ready-to-use container, sold individually
• Works alongside flashing, housewrap and weatherstripping as part of the air and water control layer at the opening rather than as a substitute for them

Applications

• Sealing the perimeter of new window units in wood-framed rough openings
• Replacement and retrofit door installations, including entry doors and patio sliders
• Air sealing rough openings during weatherization and envelope tightening work
• Sealing behind exterior casing, brickmould and drip caps before trim is installed
• Closing the jamb gap at sidelights, transoms and fixed sash units
• Draft-proofing existing openings found leaking during renovation or punch-list work

Product Details

• Product Type: Sealant
• Intended Use: Window and door perimeter sealing
• Container Size: 24 oz.
• Sold As: Each
• Category: Weatherproofing and sealants

Specifications

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