2026-04-18 7 min read
Replacing a garage door is one of those home improvement projects that looks simple on paper but has a surprising number of decisions packed into it. The good news: it consistently ranks as one of the best investments you can make in terms of curb appeal and resale value. The less good news: if you don't know what you're looking for, it's easy to overpay or end up with a door that doesn't suit your home or the local climate.
Here's what Sandown homeowners specifically need to think through before making a decision.
Sandown is a town with genuine variety in its housing stock — ranch-style homes, two-story Cape Cods, colonial revivals, and newer construction developments like Vantage Point and Wight Isle Estates. Each style has different garage configurations and different curb appeal expectations.
A ranch home near Angle Pond has different visual needs than a three-car colonial on a wooded lot off Route 121A. The door style, material, and panel design that looks right on one home can look awkward on another. Before you shop on price alone, spend a few minutes thinking about what matches your home's architecture.
Steel garage doors are by far the most popular choice for New Hampshire homes, and for good reason. They're durable, low-maintenance, and available in a wide range of styles — from flat panel to raised carriage-house designs that mimic the look of wood without the upkeep. Steel holds paint well, resists warping, and handles freeze-thaw cycles better than wood.
For Sandown's climate — where temperatures swing from lows of 17°F in January to highs above 80°F in July — insulated steel is the practical choice for any attached garage. Look for doors with a polyurethane foam core rather than polystyrene; polyurethane bonds to both steel skins and provides significantly better insulation values.
Wood doors look beautiful, especially on colonial and Cape Cod style homes. If you've got a carriage-house style garage on a classic New England property, a real wood door can be the finishing touch that makes the whole exterior work. The trade-off is maintenance: wood requires regular painting or staining, and it's vulnerable to moisture. In a climate with heavy snowfall, rain, and humidity swings, a wood door needs consistent attention to avoid warping and rotting at the bottom panel — the most exposed section.
Fiberglass and composite doors offer some of the visual appeal of wood without as much maintenance burden. They're lighter than steel and won't rust, but they can crack in very cold temperatures — a real consideration for Sandown winters where temperatures can drop to single digits or below.
Garage door installation costs vary more than most homeowners expect. Here are the main factors:
Door size: A single 8x7 or 9x7 door costs less than a double 16x7 door — both in materials and labor.
Material and insulation: A basic uninsulated steel door is the least expensive option. An insulated steel door with a high R-value costs more upfront but pays back in energy savings and comfort, especially if your garage is attached to the living space.
Style and panel design: Plain flat panels cost less than raised carriage-house panels with decorative hardware. Windows add cost but add light and visual character.
Opener: If you're replacing the door, it often makes sense to evaluate the opener at the same time. An aging chain drive opener on a new, heavier insulated door may strain under the load. See our garage door opener guide for a full breakdown of your options.
Track and hardware: If your existing tracks are damaged, corroded, or misaligned, they'll need to be replaced as part of the installation. Don't assume the existing hardware can always be reused.
Labor: Professional installation in southern New Hampshire typically includes removal and disposal of your old door, full hardware installation, balancing, and safety testing.
A basic single steel door professionally installed generally runs a few hundred dollars on the lower end; a fully insulated double door with carriage-house styling and professional installation can run into the low thousands. Get a specific quote based on your opening size and door choice — don't rely on generic online estimates.
Sandown averages some genuinely cold winters. January lows average around 19°F, and multi-day cold stretches are common. If your garage is attached to your home, an uninsulated door is essentially a large hole in your building envelope.
R-value is the measure of insulation resistance — higher is better. A basic uninsulated door has an R-value near zero. A quality insulated door can reach R-16 or higher. For Sandown homeowners with attached garages, an R-value of at least R-12 is a reasonable minimum target. Our cold weather preparation guide covers what else you can do to keep heat in during the winter months.
For detached garages used primarily for storage or parking, insulation is less critical — though even a modest R-value helps protect vehicles and anything stored inside from extreme temperature swings.
Garage door openings are not always standard. Older Sandown homes — particularly those built in the 1970s through 1990s — sometimes have non-standard opening heights or widths. Before ordering a door, measure your opening carefully:
- Width of the opening at its widest point - Height of the opening - Headroom — the space between the top of the opening and the ceiling (you need at least 10–12 inches for most standard track systems) - Side room — space on each side of the opening for the vertical tracks - Depth of the garage — the door has to fully open and retract without hitting your car
A professional installation includes taking all these measurements before ordering, which is one of the key reasons to work with a local company rather than purchasing a door from a big-box store and trying to fit it yourself. Sandown Garage Doors handles the full process — measurement, selection guidance, and installation — so you're not guessing.
If you're ready to talk through options for your specific home, visit our contact page to schedule an estimate, or browse our full services to see everything we cover.
Q: How long does a garage door installation take? A: Most single or double door installations are completed in a half day to a full day. That includes removing and disposing of the old door, installing the new door panels, tracks, springs, and hardware, and testing the full system. If a new opener is being installed at the same time, add another hour or two.
Q: Should I replace both garage doors at the same time if only one needs replacing? A: Not necessarily — but it's worth considering if the second door is more than 15 years old or visibly deteriorating. Replacing both at once saves a second installation cost and ensures your garage fronts match, which matters for curb appeal and resale value. If the working door still has several years of life left, replacing just the damaged one is perfectly reasonable.
Q: What's the difference between a one-piece tilt-up door and a sectional door? A: Most modern garage doors are sectional — they're made of horizontal panels connected by hinges that roll up along a track as the door opens. Tilt-up doors operate as a single solid panel that swings outward before rising. Sectional doors are the standard for a reason: they take up less driveway space, work more smoothly with automatic openers, and are easier to repair section by section if damage occurs. If your home still has an old tilt-up door, replacing it with a sectional is a practical upgrade.