How to Frame a Door in Concrete Block

If you are building a new home and you’re wondering how to frame a door in concrete block, this article can help you. In this article, we’ll go over the basic steps involved, as well as tapcons, cap units, and how to secure the frame to the concrete block wall. We’ll also discuss the different types of fasteners used in construction, and cover concrete fasteners.

Cap units

A concrete block can be used to frame a door and can come in various shapes. The sizes of real concrete blocks are usually smaller than the theoretical ones. They are usually smaller by three eighths of an inch in each dimension, to account for the thickness of the mortar joints. There are several different types of cap units, ranging from single corner units to double corner units. Single corner units have a squared off end, while double corner units have two. Single corner units are used for corners of walls, while double corner units are used to frame vertical pillars. Sash units have slots cut in the flat ends. These are often used around window openings, and provide expansion space.

Another option for concrete block doors and windows is to use cap units. Cap units are thin concrete blocks that cover the open spaces at the top of a concrete block wall. Other cap units come in different types, including bullnose blocks, which have an rounded end. Jamb blocks, on the other hand, have an indentation where the window jams match. Partition blocks, lintel blocks, and architectural masonry units are designed for decorative uses and feature textured faces. Different cap units have different applications, so choosing the right one will depend on the size and shape of the wall.

Hollow metal frames

When installing a hollow metal frame on a door in a concrete block building, you must consider the type of material. Metal should be a minimum of 16 gauge. Stainless steel or copper is preferred. The door frame should have cutouts and reinforcements to accommodate security systems and hardware. It should also come with details regarding the dimensions and construction, material and core descriptions, fire-resistance ratings, temperature-rise ratings, and hardware locations.

The advantages of hollow metal doors are that they are more robust than wood and are vandal-resistant. Additionally, hollow metal doors are fire resistant, and some types can even achieve UL-listed fire ratings of two hours and more. The hollow metal frame is usually supplied with a fire-rated door and can be installed in concrete block walls or interior buildings. Hollow metal doors are also often available with a fire-rated finish.

The dimensions of the frame should match those of the door opening. If it doesn’t, leave a 3/16″ gap for caulk. You can also install the door ‘butt-frame’ way, with the butt directly against the wall. Then, grout the frame with plaster or mortar. This procedure will ensure that it matches the wall’s width and depth. Lastly, you can also grout hollow metal frames to the concrete block wall.

A door frame may require a countersunk head anchor. Concrete screws and Tapcons have holding values in concrete blocks. To calculate an effective countersunk head anchor, divide the ultimate load of the door by four. This will give you a safe working load for the door frame. If the door frame has a countersunk head, make sure the fasteners are longer than normal. The resulting gap will prevent the door frame from cracking or sagging.

To harden the door, you can use heavy-gauge steel plate or sheet metal. The thinnest metal sheet you can use is 12 gauge. Then, fasten the metal frame with carriage bolts. Do not forget to cover all the silencer holes. In general, three or four silencer holes should be present for single doors and four for pairs of doors. A fourth silencer hole should be uncovered and filled with a suitable material.


When you’re installing a new door, you may be wondering: “How to frame a door in concrete block using Tapcons?” The answer is simple: use a #2 Phillips bit to drive the anchor into place. Don’t over-torque the bit! Otherwise, it can strip out before the head of the screw becomes damaged. Tapcons are tough and durable – if they weren’t, high winds would easily crack the concrete block and cause the door to fall out.

If you’re installing a new door, you’ll probably need a 1/4-inch concrete screw. Most door installers use this type of anchor, which has a large, flat countersunk head. A 1/4-inch concrete screw will create its own countersink in the wood. The threads extend about one-and-a-half inches past the point of the screw, making it easy to use even for beginners.

When using Tapcons, be sure to read the installation instructions carefully. They have specifications for how long they must be embedded in the base material. A flathead Tapcon must be a minimum of one-inch-thick concrete, and a hex-headed one must be at least three-fourths-inch-deep concrete. In any case, the thickness of the base material and the quantity of mortar present in the mortar joint determine the appropriate amount of embedment.

Next, place the door frame in the concrete block opening. Place a level next to the door frame and then place a couple of shims between the concrete wall and the door frame. If necessary, stack them until the door frame is level. You may need to repeat this step with the bottom hinge as well. You’ll need to add more shims as necessary. Afterward, you can put in the door to secure it.

Concrete fasteners

There are several different types of concrete fasteners available for framing a door in a concrete block. These fasteners are typically hammer-set anchors, which are not removable, and soft-metal shields. The soft-metal shield is a hollow metal sleeve that accepts a sheet-metal screw. The anchor is the most expensive per hole but provides the strongest connection between the door and the block.

Choosing the right concrete fasteners for framing a wood door can be challenging. There are a number of types and sizes of wood door frames, and the type of wood you choose will determine the proper size and type of fastener. In addition, most wood doors have a countersunk head, which means that a longer concrete fastener may not be suitable.

When choosing a fastener, make sure to select one with the right diameter. Generally, the longer the screw, the better. If you’re using a 2x stock, choose a fastener with a 72 mm length. You can also choose a fastener with a different color to indicate how strong it is. A yellow fastener is the middle of the power range and should work fine.

When framing a door in a concrete block, a screw that has a minimum diameter of 1 inch will provide the greatest strength and resistance. A screw with a 1/4 inch diameter has nearly three times the pullout resistance of a 3/16-inch screw. The thickness of the fastener will also determine the size of the fastener. When determining the proper size, be sure to measure the size of the holes that you’ll need to drill.

The CONFAST Flat Phillips Concrete Screws are 1/4-inch diameter and three-and-a-half inches long. They feature corrosion-resistant blue coating and are ideal for use in dry environments. The screws come in a kit of 100. When drilling holes, always use a masonry bit and drill at least 1/4 inch deeper than the depth of the embedment. Using a standard electric drill will require twice as much time.

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