Door Threshold / September 14, 2018 / Laure Lacharite.
New jambs allow for air-tight vinyl weather stripping and adjustable thresholds with vinyl door bottom sweeps. Low maintenance fiberglass or metal doors are sandwiched with foam insulation. And doors with windows come with thermal glass. Installing a new door in an existing older home has become a highly desired remodeling upgrade. These days installing a pre-hung entry door system (including jambs) to new wood stick frame construction is generally pretty straight forward; you can just nail or preferably screw through the jambs to the framing studs behind. If adjustments are necessary just pull the nail or back out the screw re-align the jamb using builders shims and try again.
Ive learned by the hard way of experience that its necessary to remove old existing jambs carefully. If directly fastened to masonry with cut nails jambs removal may break out the cinderblock unless the jambs are cut into short manageable lengths. An out of level concrete threshold step can be ground flat by a concrete cutting subcontractor or the door threshold can be adjusted by unscrewing and repositioning in the jamb by the amount out of level. Any attached brickmold and casing must be removed from the jambs to make installation easier with shimming. Also brickmold will probably have to be ripped in width to fit the overall brick opening width and height.
UV protective tape has chemicals in both the tape and adhesive that block UV rays and make the tape resistant to both sunlight and heat. It can be used in both hot and cold climates without the worry of adhesive transfer resulting in a quick and clean removal upon project completion. Although more expensive than other tapes UV protective tape is very cost effective when the costs of clean up or repainting of entry thresholds are considered. Blue masking tape and blue sill tapes are the most common tapes for protecting thresholds. These low cost tapes work for short term protection only in areas of low heat or sunlight.
Of course youre going to check the concrete threshold step for level. Carpenters never assume anything right? Measurement of the exterior brick opening overall height from threshold to lintel will be noted. Any further uncertainty about whether a house was built with masonry walls can be at least partly resolved by measuring the exterior brick opening overall width. A width measurement slightly off by about one-half inch from the nominal brick opening is a sure tip-off that youre going to be facing the direct fasten to masonry challenge. Adjust your installation estimate accordingly for some extra labor.