Begin with the symptom, then inspect outward
Note what the door does: rubs at a corner, drags at the threshold, springs open, will not latch, moves in the wind, leaks air, admits water, or feels loose at the lock. Then check whether the condition changes with weather and whether it appeared suddenly or gradually.
The symptom is only the starting point. Loose hinges, stripped fasteners, a shifted strike, worn weatherstrip, a distorted slab, an out-of-square frame, a moving threshold, lower-jamb deterioration, or movement in the surrounding opening can create overlapping complaints.
- Slab and edges
- Hinges and fasteners
- Latch, strike, and lock
- Frame and jamb
- Threshold and sill
- Weather seals and perimeter
- Water evidence and surrounding finish
Conditions that often favor repair
Repair is more promising when the slab and frame are structurally sound and the problem is isolated to alignment, hardware, weather seals, a threshold component, or localized jamb damage. A repair should correct the cause rather than simply move the visible symptom.
For example, moving a strike may restore latching, but it is not a complete solution if loose hinges or frame movement caused the misalignment. Replacing weatherstrip may reduce a draft, but it cannot correct a twisted frame or unsupported sill.
- Loose or worn hinges
- Correctable latch or strike alignment
- Worn weatherstrip or sweep
- Serviceable lockset or hardware
- Localized jamb damage
- Minor threshold adjustment
- A sound opening with a limited defect
Conditions that often favor replacement
Replacement becomes more reasonable when the slab is severely warped, split, rusted through, or otherwise structurally compromised; when the frame or sill has extensive deterioration; when recurring water has affected the opening; or when security, configuration, accessibility, or performance goals exceed what a repair can provide.
A full-unit replacement can expose the rough opening, sill, anchorage, insulation, and weather-control transitions. That access is valuable when the existing frame is not worth preserving. It also means more trim and finish work, so the scope should be explained before the door is ordered.
- Severe slab distortion or damage
- Extensive frame, jamb, or sill deterioration
- Repeated failure after appropriate repair
- Compromised security
- Opening or swing configuration change
- Need to address hidden rough-opening conditions
Slab-only and prehung are different projects
A slab is the door panel. It must be fitted and prepared to match the existing frame, hinges, handing, and lock locations. It can reduce disruption when the current frame is sound, square, and compatible.
A prehung or full-unit door includes the slab and frame. It allows the installer to reset the entire assembly in the rough opening, address sill support and perimeter conditions, and establish new hinge, latch, threshold, and weather-seal relationships. The right choice follows the opening condition—not a universal rule.
What to collect before requesting an estimate
Useful information includes the project address, door location, approximate slab width and height, swing and handing if known, the symptom, how long it has existed, whether it changes with weather, and whether water or impact damage is involved.
Photograph the whole door from both sides, the hinge edge, latch and strike, threshold and sill, lower jambs, exterior perimeter, and any damaged or wet area. Do not remove labels or components solely for the photo.
