Door Threshold / September 12, 2018 / Carine Auclair
But what about retrofitting a new entry door system in an older home built with cinderblock masonry walls? You cant use the same technique of just nailing through the jambs the masonry will just deflect and bend a regular framing nail. Cut nails might possibly work but the chances for jambs alignment adjustments are slim to zero while the chances of masonry cracks or half-moon hammer head marks in the jambs are almost a given. Masonry screws need to be started in pre-drilled cinderblock holes which can be drilled through the jamb but Ive never been satisfied with their holding power alone where the cinderblock is prone to crumble around the holes while adjusting screws and snugging shims tight. Experience has taught me to always insert plastic expansion sleeves in the cinderblock to properly fasten masonry screws.
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.
They are known to flake and chip when exposed to sunlight and are often cited for creating more work than the protection provided. These low quality 2 or 3 mil. tapes often leave a sticky adhesive residue on thresholds as the adhesive used in the tapes softens in warm temperatures. Another option is to use fitted threshold protection made from molded plastic. The molded plastic threshold protectors are designed to protect the most common types of thresholds in residential or commercial construction. They are the most durable type of threshold protection and can be used for multiple projects.