What the two constructions are
Hollow-core is a thin skin over a cardboard or lattice interior. It is light, cheap, and easy to hang. Solid-core is a dense particle or composite core under the same skin, heavier, quieter, and less prone to sounding empty when it closes. Neither is an exterior door. Weather-exposed units are a different product and are not this service.
Sound, privacy, and a bedroom hall
If the complaint is that you can hear the hall from a bedroom, hollow-core is part of that. Solid-core reduces that hollow clap. It does not soundproof a room. It also needs hinges and a jamb that can carry the extra weight. A single office door in a Lehi basement is a common one-off upgrade. Replacing every hollow-core door in a South Jordan production house is a per-opening project, priced that way.
Cost and matching
Hollow-core keeps you at the low end of a $200–$600 opening. Solid-core moves you up the band because the unit costs more and hanging it takes more shimming. Matching six-panel style across a floor matters more than core if the house currently reads as one design. We will not mix a raised-panel solid-core into a flush hollow-core hall without you seeing that on the scope.
Bottom line
Hollow-core is the production default. Solid-core is a quieter, heavier interior door, priced per opening, still not an exterior unit. Match style on purpose. Check that the jamb can hold the weight.
Questions
Are solid-core interior doors better for sound?
They are quieter to close and pass less of that hollow clap. They are not a soundproofing system. Bedrooms and offices are the usual places they earn the extra cost.
Can I put a solid-core slab in a hollow-core jamb?
Sometimes, if the jamb and hinges can carry the weight. Many production jambs are happier with a pre-hung solid-core unit. We check that at the opening.
Do I have to replace every interior door to match?
No. You can upgrade one office or bath. If the styles differ, the hall will show it. The scope should say whether we are matching the floor or doing one opening.
Is solid-core required by code for interior doors?
Not for ordinary interior passage doors in a single-family house. Fire-rated units in specific locations are a different spec and would be listed if they applied.
