Astragal. If you have a pair of doors in your entry, the astragal is the vertical piece that runs between them, from the sill to the head.
Astragal. If your front door design includes double doors, an astragal is the vertical piece that runs between the two panels.
Also known as door bars, interior door thresholds are essential for all modern homes and commercial spaces. They not only enhance the appearance of your interior space but can also make the area safer. Interior door thresholds can also make your property more energy-efficient, saving you money on gas and heating bills.
The frame (sometimes called a jamb) is made up of three separate pieces and surrounds the door creating a "frame" in which the door can sit. The two vertical frames are called side jambs, and the horizontal frame is referred to as the head jamb. Frames are made up of composite material or solid wood.
Margins (sometimes also called “rebates”) are the spaces between the door and the door frame. These are often important if you're looking at issues with your hinge jamb. Again, these spaces can be broken down into specific types: the hinge margin, strike margin, top (header) margin, and bottom (sweep) margin.
Hinges. The hinges are jointed metal fittings that connect the door panel to the frame. Hinges come in a wide variety of styles, including concealed, pivot, and barrel hinges.
Most door installers look for a gap in the middle of double doors between 3mm and 5mm – that's less than ¼ inch. This means the doors will swing correctly and there's no risk of them hitting one another. Any gap between doors bigger than 5mm is too much and will look out of place.
A door jamb and a door frame are two different things. So, what is a door jamb vs a door frame? A door frame is made of a mix of horizontal and vertical members which are placed on all sides to provide support to a door. A jamb, on the other hand, is a flat surface that runs vertically on each side of the door frame.
A doorway floor transition sits between the door jambs on the floor, helping to create a safer and more aesthetically pleasing transition from one floor to the next.
As we already discussed, a jamb is a vertical piece of trim or moulding that is installed along the door or window frame to hold everything together. Conversely, a door or window casing is a decorative element that covers the frame, and provides a clean overall aesthetic.
A saddle threshold sits on the floor underneath the door when the door is closed. Saddle thresholds get their name from their similar look to a horse saddle when viewing a cross section of the door saddle.
A room divider is a screen or piece of furniture placed in a way that divides a room into separate areas. Room dividers are used by interior designers and architects as means to divide space into separate distinct areas.
A mullion refers to the vertical piece of wood separating the panes of glass, not both the verticals and the horizontal stile pieces. Today, mullions are the vertical bars between the panes of glass in a window. As with muntins, their role is primarily decorative now.
Astragal (T-Astragal): A "T" shaped component that is attached to the inactive door. Astragals are kerfed for weather-stripping to seal the gap between the two doors. In addition, top and bottom flush bolts are mortised into the astragal to hold the inactive door in place.
Jamb casing: Also called an architrave, this is a decorative trim mounted to the wall around the frame. It's generally separate from the frame itself, meaning it can be removed or replaced easily.
Stiles – This is the collective name for the vertical components that sit on the outside edge of a door. Lock stile – This is the vertical edge of the door which sits on the opposite side of the door to the hinges, and contains the lock or latch.
Door jambs should last for decades before needing to be replaced, but of course, accidents happen. You may be able to fix a broken door jamb using wood-filler and a bit of sanding paper, but in some cases you might have to install a new door jamb.
Leaf. The first and most significant component of the hinge is the leaf. This is the part with screw holes in it. The leaf attaches to the door frame and swings with it.
What is the difference between a threshold and a door sill? The door sill is a component located at the bottom of your exterior door frame and sits directly on the foundation of your floor. The threshold is the component that sits on top of the door sill.
Door stop moulding (also called door stops or stop moulding) is the thin strips of trim along the inside edges of door frames that stop the door from swinging through the frame. In other words, door stop trim is a type of moulding that attaches to the top and both sides of the door jamb.
Mullions can be vertical or horizontal pieces. Fixed mullions will usually have the same dimensions and the same jamb depth as the rest of the frame. On a detailed hollow metal frame, for example, a mullion will separate pieces of glass, panels, or will separate a door and the glass or panels.