Climate Control for Exterior Doors
Sun Mountain distributes a selection of high-quality door sills, sweeps, and weatherstrip, generally for exterior door applications. For pre-hung exterior doors by Sun Mountain, these hardware items are included with the unit at no additional charge.
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Standard sill, sweep, and weatherstrip options include:




- Adjustable Oak Sills. Sun Mountain distributes Pemko aluminum door sills, with an Oak threshold that can be adjusted to create a secure seal to the bottom of the door. Both inswing and outswing adjustable sill options are available.
- Wood Sills. Sun Mountain offers non-adjustable wood sills for openings with limited exposure to the elements.
- ADA Sills. Pemko ADA sills have a non-adjustable threshold that is thinner than traditional sills, allowing for wheel chair access through the opening. Sometimes called “saddle” sills, these thresholds are ADA compliant and can be used in any opening where an adjustable sill is not desired.
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- L-Shaped and Surface Mount Sweeps. Sun Mountain’s L-shaped and surface mount sweeps include a drip cap to direct water away from the door. L-shaped sweeps are provided on all 1-3/4″ thick exterior doors. Surface mount sweeps are provided on all 2-1/4″ thick or thicker exterior doors. If installed on-site, Sun Mountain recommends sealing the top edge of the sweep with a bead of silicone at time of installation, to prevent moisture from seeping between the sweep and the door.
- Weatherstrip. Q-Lon® Weatherstrip is a durable foam rubber material used to seal the side and top edges of an exterior door, to limit air transfer and exposure to outside elements. The weatherstrip is usually mounted in a kerf, or slot, cut in the stop of the rabbeted jamb used for exterior doors.

In addition to these industry-leading standard solutions, Sun Mountain can source other sill and sweep options to meet nearly any need. For example, hydro sills are recommended for double exterior doors, and are available at an additional charge. Sun Mountain also offers optional automatic boor bottoms, which are mounted into a mortise on the bottom edge of the door. Automatic door bottoms recess into the door when open, and drop down to the sill to create a tight seal when the door is closed. This mechanism is particularly useful with non-adjustable wood or ADA sills.
