It divides into hardware that hangs the door, hardware that latches or locks it, hardware that controls how it moves, and hardware that seals it.

Hanging hardware is hinges and pivots - butt hinges, continuous hinges for high-traffic doors, and pivot sets for heavy or offset-hung leaves.

Latching and locking covers handles and lever sets, mortise and cylindrical locks, deadbolts, multipoint locks, exit devices for escape routes, and the cylinders and keying that go with them.

Control hardware governs movement: door closers, hold-open and free-swing devices, floor springs, coordinators for double doors, and stops and holders that protect the door and the wall.

Sealing hardware is weatherstripping, threshold seals, drop seals and, on fire-rated doors, intumescent and smoke seals.

Overlaying all of it are the performance requirements. Fire doors need hardware tested as part of the doorset; escape doors need hardware that opens without a key from the escape side; and accessibility standards constrain operating force and handle type.

Those requirements are set by local regulation and should be established before hardware is selected, because they eliminate options rather than merely informing the choice.

Choosing the right door lockset for your home involves considering several factors to ensure security, functionality, and aesthetic appeal.

First, assess the level of security you need. For exterior doors, opt for deadbolt locks with a Grade 1 or Grade 2 ANSI/BHMA rating, as these offer superior resistance to forced entry. Look for features like anti-pick pins, drill-resistant plates, and a solid metal bolt. For interior doors, less robust locks like privacy or passage sets might suffice, depending on the room's purpose.

Next, consider the lockset's function. Do you need a keyed entry for exterior doors, a privacy function for bedrooms or bathrooms, or a passage function for closets that don't require locking? There are also dummy knobs for purely decorative purposes.

Material and finish are also important for both durability and aesthetics. Common materials include brass, bronze, stainless steel, and zinc. Finishes range from polished chrome and satin nickel to oil-rubbed bronze and matte black, allowing you to match your home's décor.

Finally, think about convenience and smart features. Smart locks offer keyless entry via keypads, smartphones, or voice commands, and some can integrate with home automation systems for remote access and monitoring. While often more expensive, they provide enhanced convenience and control. Always ensure the lockset is compatible with your door's thickness and existing bore holes for easy installation.

To close the door reliably and at a controlled speed every time - which matters for fire compartmentation, security, energy and noise, none of which work with a door left ajar.

On a fire door the closer is not a convenience. A fire door only performs if it is closed, and the closer is what guarantees it latches from any opening angle. Hardware on fire doors must be compatible with the tested doorset.

A closer also stops doors slamming, which protects the door, the frame and the hardware, and reduces noise.

The adjustments matter and are frequently left at factory settings. Closing speed controls the main sweep; latching speed controls the final few degrees, and it needs enough force to engage the latch against the seals; backcheck cushions the door near full open so it cannot be flung into a wall; and delayed action, where fitted, holds the door open briefly for people carrying loads or moving slowly.

Closing force is a compromise: enough to latch against seals and air pressure, low enough to meet accessibility requirements for opening force.

Hold-open and free-swing devices linked to the fire alarm allow doors to stand open in normal use and release on alarm.

Installing a door threshold helps seal the bottom of a door, improving insulation and preventing drafts. First, measure the width of your door frame to determine the appropriate length for your threshold. Cut the threshold to size using a saw, ensuring a snug fit.

Next, prepare the subfloor or existing flooring. Clean the area thoroughly, removing any debris or old caulk. If needed, you might need to level the surface. Apply a bead of construction adhesive to the underside of the threshold.

Carefully position the threshold in the door frame, aligning it correctly. Press it firmly into place to ensure good contact with the adhesive. For added security, pre-drill pilot holes through the threshold and into the subfloor, then secure it with screws. Ensure the screw heads are flush with or slightly recessed into the threshold.

Finally, apply a thin bead of caulk along the edges where the threshold meets the door frame and the floor. This seals any gaps and provides a finished look. Allow the adhesive and caulk to cure according to the manufacturer's instructions before heavy use.

It closes the gaps around the leaf, which cuts draughts, energy loss, noise, dust and water ingress - and on a fire door the equivalent seals are a life-safety component.

The perimeter gap around a door is a direct air path. Sealing it is one of the cheapest air-tightness improvements available, and the effect is immediately noticeable on external and lobby doors.

Energy follows from that: uncontrolled air movement carries conditioned air out and unconditioned air in, and in many buildings that loss exceeds what the door's insulation value suggests.

Acoustic performance depends heavily on the perimeter. A door's rated sound reduction is effectively unachievable with an unsealed gap, and the threshold gap is usually the worst offender - which is why drop seals exist.

Weatherstripping also keeps out driven rain, dust, insects and, at the threshold, water.

On fire doors, intumescent seals expand under heat to close the gap, and smoke seals restrict cold smoke. These are part of the tested doorset and must match its specification - fitting a general weatherstrip in place of them is a serious defect.

Seals are consumables: they compress and harden, and they need periodic inspection and replacement.

To maintain and lubricate door hinges, start by cleaning them thoroughly. Use a cloth to wipe away any dust, dirt, or grime from the hinge pins, knuckles, and leaves. For stubborn buildup, you can use a mild soap and water solution or a specialized hinge cleaner. Ensure the hinges are dry before proceeding.

Next, identify the type of lubricant needed. For most standard residential door hinges, a silicone-based spray lubricant, lithium grease, or even petroleum jelly can work effectively. Avoid using WD-40, as it can attract dust and grime over time, leading to more frequent maintenance.

Apply the lubricant directly to the hinge pins and into the crevices of the knuckles. If possible, gently open and close the door several times to help distribute the lubricant evenly. You can also temporarily remove the hinge pins (if they are removable) to clean and lubricate them individually before reinserting.

Regular maintenance, typically once or twice a year, can prevent squeaking, sticking, and premature wear. If hinges are heavily rusted or damaged, consider replacing them to ensure proper door function and longevity.

A door viewer, also known as a peephole, is a small lens or optical device installed in a door that allows someone inside to see who is outside without opening the door. It provides a wide-angle view, enhancing security by letting occupants screen visitors before granting entry.

A door knocker, on the other hand, is a device attached to the exterior of a door, typically made of metal, used by visitors to announce their presence by striking it against the door. It is a traditional and decorative way to signal arrival, without offering any visual security function.

Adjusting a sliding door for smooth operation typically involves a few key steps, primarily focusing on the rollers and the track.

First, thoroughly clean the track. Debris, dirt, or accumulated grime can significantly hinder the door's movement. Use a vacuum cleaner to remove loose particles, then wipe the track down with a damp cloth and a mild detergent. Ensure the track is dry before proceeding.

Next, inspect the rollers. Most sliding doors have adjustable rollers located at the bottom of the door. Over time, these rollers can become worn, dirty, or misaligned. To access them, you might need to lift the door off its track or remove a cover plate. Use a screwdriver to adjust the roller screws. Turning the screws clockwise will usually raise the door, while turning them counter-clockwise will lower it. Adjust each roller gradually, testing the door's movement after each adjustment, to achieve an even and smooth glide. Ensure both sides of the door are at a similar height to prevent binding.

If the rollers are severely worn or damaged, they may need to be replaced. You can usually find replacement rollers at hardware stores.

Finally, lubricate the track and rollers. Use a silicone-based lubricant, as oil-based lubricants can attract more dirt and grime. Apply a thin layer of lubricant to the top of the track and directly onto the rollers. This will reduce friction and help the door move more effortlessly.

By following these steps, you can significantly improve the operation of your sliding door, making it glide smoothly and quietly.

The best materials for door sweeps depend on the specific needs for insulation, durability, and aesthetics. Common choices include: * Rubber/Silicone: Excellent for sealing gaps, providing good insulation against drafts, dust, and moisture. They are flexible, durable, and can withstand various weather conditions.

• Brush: Often made from nylon or polypropylene bristles, brush sweeps are good for uneven surfaces and provide a decent seal against dust and insects, but are less effective for thermal insulation than rubber.
• Vinyl: A cost-effective option that offers good flexibility and resistance to moisture. It's a common choice for basic draft stopping.
• Aluminum/Metal: These materials are typically used for the housing or retainer of the sweep, providing structural integrity. They are durable and can be combined with rubber, brush, or vinyl inserts.
• Felt: While less durable than other options, felt provides a soft seal and is suitable for interior doors where minimal friction is desired.For maximum effectiveness, consider the climate, the type of door (interior/exterior), and the size of the gap you need to seal.

Replacing a broken door handle or knob typically involves a few key steps. First, you'll need to remove the old hardware. This usually means unscrewing the screws on the escutcheon plates (the decorative plates covering the mechanism on both sides of the door) and carefully pulling the handle components apart. For older knobs, there might be a small pin or set screw on the neck of the knob that needs to be depressed or unscrewed before the knob can be removed.

Once the old hardware is off, you'll want to check the latch mechanism (the part that extends into the door frame) and the strike plate (the metal plate on the door frame that the latch goes into). If these are also damaged, you'll need to replace them. Otherwise, you can proceed with installing the new handle.

To install the new handle, simply reverse the removal process. Insert the new latch mechanism if applicable, then slide the new handle components onto the spindle (the square rod that connects the two handles). Secure the escutcheon plates with screws, ensuring the handle operates smoothly. Before tightening all screws completely, test the handle to make sure the latch retracts and extends properly and that the handle turns freely without binding. Finally, ensure the strike plate aligns correctly with the latch for a secure closure.