Most thresholds on concrete are nailed. Use a large pry bar and hammer to pry a nailed threshold away from the floor. Apply a 1/4-inch bead of flooring or construction adhesive along the center of the expansion joint. Remove the original threshold. The screws were sitting perfectly in its countersink, snug and tight. Door thresholds come in a variety of materials, such as wood, marble and metal, and make the transition from doorway to floor smooth and easy. If it is gray and chalky, you have a concrete sub-floor. The national average materials cost to install a threshold transition strip is $13.37 per transition, with a range between $12.51 to $14.23. When installing thresholds on concrete an extra step is added to provide pilot holes for the necessary concrete screws. Mark the ends of the new threshold using the original as a pattern. Remember to note whether the threshold is over a concrete floor or a wooden one. The total price for labor and materials per transition is $100.79, coming in between $79.79 to $121.79. In that case I might suggest using stainless steel screws to secure your threshold to eliminate any rusting down the road. Installing a threshold is usually a simple matter of driving screws down through the provided holes into the threshold into the sill plate or wooden sill. Examine the floor where the old threshold was pulled up to determine if you are installing onto a concrete sub-floor or a plywood or other wood-based floor. Remove the loosened threshold and use it as a template to cut the new threshold to length. So what are your options to close the gap? Apply flooring adhesive to the floor, … Thresholds are as important as the door unit itself is. Do not force it. Let’s start with the door … easy to install and cost very little. Morris specializes in many topics and has 15 years of professional carpentry experience. Install a tube of urethane caulkin… Professional Polyaspartic Garage Floor Coating Install ONE DAY FLOOR COATING. Or you can try using those plastic things that they use in walls that you use to hold a screw then screw the threshold back down. Place the transition strip in the expansion joint and press down firmly. It was in place solid as a rock. Open the exterior door fully. GRK makes their Caliburn concrete screw in kind of a brass color. Smooth caulking with a dampened finger for a smooth finish. Re: Securing aluminum thresholds in concrete. If the fit is too tight, trim it slightly and try again. The transition butts to the threshold and there's a gap under the trim to allow the flooring to expand and contract. Concrete Tapcons would work, the only drawback is they are blue in color and probably would need to be painted. A fine-toothed blade on a circular saw works well for wooden thresholds. This installation method creates a floating floor, which means GripStrip vinyl planking covers the subfloor without adhering or fastening to it in any manner. Over time … and allow it to dry. Concrete thresholds are often used for indoor and outdoor showers, as well as entry doors to rooms with stone or granite flooring. Do not over tighten. Look at the dust in holes left by the old nails or screws. If there are concrete screws in the original back them out with a drill to remove the threshold. The threshold molding should overlap the flooring by 1/2" to 3/4" leaving the balance for expansion. If it fits, apply Liquid Nails glue to the concrete and attach the threshold. Build up toekick and subfloor with pressure-treated lumber; re-install toekick. Cut the notches using a jigsaw for best results. 6. Installing a Hardwood Threshold Molding with Floating Floors . Tap the threshold into place using a rubber mallet or hammer and wood block to avoid damage to the threshold. Floating floors are an easy, mess-free way to install new flooring without necessarily having to remove the existing flooring. Drill a pilot hole in each location you marked in the last step using the same mason's bit. Mark the floor where the transition strip is to be located, taking care to allow for any required expansion space as specified by the flooring manufacturer. I would hammer drill the concrete, insert mollies, and screw the threshold down with brass or stainless screws, countersinking the heads flush with top of threshold. Blow the dust from the holes for a proper fit. If your new threshold does not require screws or you are installing it onto concrete slab, secure it with construction adhesive that is approved for use with both the threshold material and the floor surface material. Wrap a piece of masking tape around the bit, 2 inches from the tip to mark the depth. If the floor is concrete, use a carbide tipped masonry bit to drill holes for either masonry screws or plastic anchors. To attach the threshold, nail into the subfloor behind the lip of the molding. Non-porous. Photo about: Perfect Hardwood Floor Threshold Molding, Title: How To Install A Threshold On Concrete Floor, Description: .. , Tags: Hardwood Floor Threshold Molding Coat,Hardwood Floor Threshold Molding Diy,Hardwood Floor Threshold Molding Ideas,Hardwood Floor Threshold Molding Paint,Hardwood Floor Threshold Molding Tips, Resolution: 1430px x 803px Mark Morris started writing professionally in 1995. A little dab of a polyurethane or silane adhesive to help hold it down wouldnt hurt either. None of the screws were loose. Door thresholds keep water out. The pattern varies from door to door. The concrete settled after the initial installation, and as the concrete began to settle, the door began to sag, thus creating a gap. Yesterday Saturday I did a double hung in the city of Yorba Linda, Ca.. Apply bead of tri-polymer caulk to joint between finished floor and new threshold. Then, test the threshold for fit. Whether you are installing a new threshold as part of a new door frame or replacing a worn or damaged threshold to restore the doorway, when you are attaching a threshold to a concrete floor, following a standard procedure will ensure a lasting connection to the floor surface. Work across the width of the door, tapping the pry bar under the threshold and levering up to loosen the nails. Remove the loosened threshold and use it as a template to cut the new threshold to length. The other option is some kind of metal or plastic insert. Drill a pilot hole in each location you marked in the last step using the same mason's bit. If it is sawdust, you have a wood-based sub-floor. There are several options although all will involve drilling to the concrete under the threshold. Attach a floor joist to a concrete block wall→. GRK makes their Caliburn concrete screw in kind of a brass … Install new threshold, then tap shims underneath. Be sure when nailing not to obstruct the floors expansion space. Hardwood 1. Cut the notches using a jigsaw for best results. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Remove the screws from the rotted threshold with a large flat-tip screwdriver. If not properly installed, they can lead to deterioration of the bottom of the door unit and will add to the utility cost of cooling and heating a house. If you are installing the threshold on concrete, as we are here, you’ll need a masonry drill bit and masonry screws to secure it in place. The threshold was 1" plus, in height. I'd put it on the screws if you have them and reinsert into the holes or on the flat part of the threshold. Try using E600 glue. Drive a 2 ½ -by-1/4 inch concrete screw into each hole. The previous owner put the really old style tiles on top of concrete. Using a masonry bit, drill pilot holes at the location for screw-fasteners. 3. 4. 2. There are several options although all will involve drilling to the concrete under the threshold. 7. Mark pilot holes for the concrete screws. He also teaches stage craft and lectures on playwriting for Oklahoma Christian University. Start at one end and pry carefully to avoid chipping the concrete. Drill to a depth of 1/8 inch to mark the location. Remove all debris from the concrete slab. Application - Typically used at exterior doorways as a transition between flooring and the threshold. He is a voice, acting and film teacher. The most effective option is to repair your concrete. concrete image by Empath from Fotolia.com. When a door company installs a brand new door, that’s straight as an arrow, a gap is the result. With a 3/16-inch rotary mason's bit, drill into the concrete underneath each screw hole in the threshold. 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