Exterior Door Buying Guide: Entry, Patio & Storm Doors

The front door's material is the single biggest decision, because it sets the maintenance, security, durability, and look you'll live with for decades. Three materials dominate, and each has honest trade-offs.

Fiberglass is the all-around workhorse. It resists dents, won't rot, and stays dimensionally stable through the temperature swings that warp lesser materials — which matters in Idaho's freeze-thaw climate. Modern fiberglass can convincingly mimic real wood grain and takes a stain or paint finish, and the insulated core gives it strong energy performance. It generally costs more than steel but less than premium wood.

Steel is the strength-and-value option. A steel slab is hard to breach and pairs well with heavy locking hardware, and an insulated steel door delivers solid energy efficiency at a budget-friendly price. The trade-off is that steel can dent from a hard impact, and a deep scratch can rust if it isn't touched up, so it shows wear in high-traffic, sun-exposed locations.

Wood is the classic, high-end look — solid and stain-grade slabs have a warmth and heft no other material fully replicates, and they can be built to custom sizes and styles. The trade-off is maintenance: wood needs periodic refinishing or resealing to fend off the sun and moisture, and a poorly maintained wood door can swell, crack, or fade. If you love the look and will keep up the finish, it rewards you; if you want set-and-forget, fiberglass mimicking wood is the safer pick.

Patio doors bring daylight in and connect the living space to the yard or deck. The choice usually comes down to sliding versus hinged French, and it's driven by how much room you have and the look you're after.

Sliding patio doors glide along a track and take up no floor space to operate, which makes them the practical pick for tighter rooms, decks, or anywhere a swing path would be awkward. They deliver big, uninterrupted glass and wide views, and quality units lock at multiple points for security.

French doors swing open on hinges — as a single or double unit, in-swing or out-swing — for a wider, more traditional opening and a classic architectural look. They make a statement and can throw the wall wide open, but they need clear swing room on one side.

Whichever style you choose, a patio door is mostly glass, so the same energy thinking that applies to windows applies here: efficient multi-pane glass and tight weatherstripping are what keep the door from leaking heat. Proper flashing and sealing at the install are essential because patio doors sit in large openings exposed to weather.

A storm door is the secondary door mounted in front of your entry door. Its job is protection and flexibility, not primary security. It shields the main door from sun, wind-driven rain, and snow — which extends the life of the finish on the entry behind it — and it adds a buffer of air that can improve comfort and efficiency at the threshold.

Storm doors are also about ventilation. Full-view and ventilating models often use interchangeable glass and screen panels, so you can let a breeze through on a mild Idaho evening while keeping the entry secure, then swap back to glass for winter. They're a comparatively modest upgrade that makes the entry it protects last longer and feel more comfortable.

A security door is a different category from a storm door, even though both mount at the entry. Where a storm door is built mainly for weather and ventilation, a security door is built to harden the opening — reinforced steel construction, sturdier frames, and heavy-duty locking hardware designed to resist forced entry.

Some products combine the two roles as storm-security doors, giving you a weather buffer and a hardened layer in one unit. Modern security doors come in powder-coated finishes and clean profiles, so adding strength at the entry no longer means a cage-like look that fights the curb appeal. The key is that the security door is square and installed solidly into a sound frame — a strong door in a weak opening doesn't do its job.

Glass is where an entry goes from functional to architectural. Decorative or clear glass set into the door slab adds light to the foyer and personality to the facade. Sidelights — the narrow glass panels flanking the door — and a transom above it widen the whole entry and pull in daylight, which is a popular way to make a standard opening feel grander.

There's a balance to strike. More glass means more light and presence, but glass is less insulating than a solid slab and clear panels reduce privacy. Energy-efficient insulated glass and the right placement let you get the daylight without giving up much performance. Patio doors carry this even further, since they're glass by definition, which is why the glass package on a patio door is one of its most important specs.

A door's rated efficiency only matters if it's sealed into the wall correctly. The slab or panel is one piece; the system around it does the rest. Weatherstripping around the perimeter compresses to block air when the door is closed, and it wears over time, so a door that's drafty after years of use often needs new weatherstripping rather than replacement.

The threshold at the bottom — often adjustable — seals against the sweep on the door to stop drafts and water at the floor line, the spot most prone to leaks. And the install itself is decisive: a properly sized, plumb, and flashed opening keeps water out of the wall and lets the door close tight against its seals. In Idaho's freeze-thaw climate, that flashing and air sealing is what separates a door that stays tight for decades from one that leaks air and lets moisture into the framing.

A handful of manufacturers build the door systems you'll see most often. Therma-Tru® makes fiberglass and steel entry door systems, including the glass, sidelights, and transoms that complete an entry. ProVia® builds entry, storm, and security doors and is known for fit and finish, with steel and fiberglass options. Pella® offers entry and patio doors across wood, fiberglass, and vinyl lines, including both sliding and hinged patio configurations. Masonite® builds fiberglass and steel exterior entry door lines with glass and sidelight options.

Brand matters, but it's the door system and the installation that determine how the door performs day to day. A quality slab installed plumb, flashed, and sealed into a sound opening will outperform a higher-end door that's set carelessly into a poor frame.

Door pricing varies widely, and it helps to understand the factors rather than chase a single number. The material and construction come first — a solid stain-grade wood door or a multi-point patio door system sits at a different level than a basic insulated steel slab.

Size and configuration matter: a single entry costs less than the same door with sidelights and a transom, and a double French unit involves more than a standard slider. Glass adds cost — decorative, divided-light, or large patio glass packages more than clear or solid. Hardware is its own lever, from standard locksets to heavy security hardware and smart locks.

Finally, the opening and the install drive a real share of the cost. A straightforward swap into a sound, correctly sized opening is simpler than one that requires reframing, new flashing, repairs to rot around the old door, or a custom size. Getting an in-person assessment is the only honest way to price your specific door and opening.