Prehung Exterior Door Threshold Has Gap Between Concrete Floor

Support for an aluminum threshold when i install an exterior prehung door i pull the oak sill along with the old frame i replace it with a piece of pt 2x8 that gets leveled in both directions these doors are designed to sit on the plywood of a deck framed house but older ballon frame homes have the oak saddle sitting directly on sloped.

Prehung exterior door threshold has gap between concrete floor.

Mark the new threshold based on your measurements. There is a 1 5 inch gap between the threshold and the bottom of the wooden door. The new threshold should have a similar profile to your old threshold and be 1 to 2 inches longer than the length of the doorway so that you can cut it for an exact fit. The concrete floor was very crooked so after installation there is about a 1 2 gap at one end under the sill plate that was attached to the door.

Most entry door frames have a piece of lumber below the door and combined with the metal threshold will raise the base of the door. Run a bead of high quality sealant along the exposed framing where the new door s exterior trim will meet the wall and across the floor where the door s threshold will sit. But a gap of 1 5 inches seems excessive. Available in aluminum mill finish and three anodized finishes.

Measure between the outside edges of the door casing. Length is custom cut to size. Insert the new unit top first sliding the exterior molding up below the z flashing. I ve just paid a series of professionals to measure order install and paint a pre hung exterior door.

While these measurements would appear to make sense they can create a major problem. Press the unit home so that it beds tightly in the caulk. Residential adjustable height thresholds ensure a tight seal for beneath the door gaps despite uneven door bottoms and sub sill level changes. The installer told me the shoe would cover the gap.

Carefully measure the doorway for the new threshold. I recently installed a new metal exterior door between my garage and basement. The solid wood base has an all aluminum exterior for superior stability and long lasting reliability. Learn how to install the threshold on a concrete slab floor employing varying methods that include the use of screws or fasteners and adhesives.