Install Doors That Fit and Function

Door Installation in Missoula for homes and businesses with doors that stick, swing unevenly, or fail to latch securely

Efficient Home's Handy Service provides door installation for residential and small commercial properties in Missoula that need interior or exterior doors replaced or newly installed. You may have an entry door that no longer seals against the threshold, a bedroom door that drags on carpet, or a back door with a frame that shifted and will not accept the deadbolt. This service includes removing the old door if present, fitting the new slab or pre-hung unit into the opening, installing hinges and hardware, and adjusting the door so it swings smoothly and latches without force.


The work covers hollow-core and solid-core interior doors, steel and fiberglass entry doors, and simple commercial doors for offices or storage rooms. Pre-hung units arrive with the door already mounted in a frame, which simplifies alignment. Slab-only installs require the existing frame to be in good shape and properly squared. Hinges are mortised into the jamb and door edge so the door sits flush when closed. Locksets and deadbolts are bored and installed according to the hardware template. Exterior doors are shimmed, insulated around the frame, and weatherstripped to seal against wind and rain.


If you need a door installed or an old one replaced, contact us to schedule door installation service in Missoula.

What Proper Fitting Means for Daily Use

You provide the door or select one based on the opening size and function, and the installer removes the old unit and checks the rough opening for level and plumb before setting the new frame or slab. Shims are placed behind hinge locations and along the strike side to hold the frame square without gaps. Screws go through the jamb and shims into wall studs to anchor the assembly. The door is checked for swing clearance, and the latch is aligned with the strike plate so the door closes and locks without lifting the handle or pushing hard.


After installation, the door opens and closes smoothly, the latch engages fully, and there are no gaps that let light or air through when the door is shut. Efficient Home's Handy Service adjusts hardware and trims the door if needed to clear flooring or thresholds. Exterior doors seal against weatherstripping, and deadbolts extend completely into the strike without binding.


This service handles installation of the door, frame, hinges, and basic locksets or handlesets. It does not include custom millwork, sidelight or transom installation, or structural changes to widen or raise the opening. If the rough opening is out of square or damaged, that repair is completed before the door is installed.

Property owners in Missoula often want to know about fit, hardware, and what to check after the install is complete.

Questions Homeowners Ask About Door Installation

What is the difference between a slab and a pre-hung door?

A slab is just the door panel and requires an existing frame in good condition, while a pre-hung unit includes the door already mounted in a new frame with hinges attached.

How do I know if my door frame needs replacing?

If the frame is twisted, rotted at the bottom, or pulled away from the wall, it should be replaced rather than trying to fit a new door into a damaged opening.

Why does my door swing open or closed on its own?

The frame is not plumb, so gravity pulls the door in one direction, and the hinges need adjustment or the frame needs shimming to correct the angle.

When should I replace an exterior door instead of repairing it?

You replace when the door or frame is warped, the weatherstripping no longer seals, or the core is damaged and compromises insulation or security.

What type of door works best for Missoula winters?

Insulated steel or fiberglass exterior doors with adjustable thresholds and full weatherstripping hold up well in cold weather and resist warping better than wood in moisture and temperature swings.

If your door needs replacing or you want to install a new one where there was none before, reach out to Efficient Home's Handy Service to arrange your door installation in Missoula.