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Pet Door Installation in Charlotte, MI

Give your dog or cat the freedom to come and go — without leaving a drafty hole in your home. National Glass Charlotte installs pet doors into sliding glass doors, windows, and walls. We size the door to your pet, cut clean, seal tight, and leave your home weatherproof. From a Chihuahua to a Great Dane, we have got the right fit.

Call 517-543-2760

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    Cat door flap wooden door

    Can You Install a Pet Door in My Sliding Glass Door?

    • Glass-Insert Pet Door — For sliding glass doors, we install a glass-insert pet door: a tempered glass panel with the pet door pre-mounted, cut to fit your door’s track.
    • No Permanent Modification — The insert slides right into your existing door frame. No drilling into your door, no permanent modification, and it is removable if you ever move.
    • How It Works — We measure your sliding door, fabricate a matching glass panel with the pet door installed, and swap it into the track. Your door still slides and locks normally.

    Call 517-543-2760.

    What Pet Door Options Do You Offer in Charlotte?

    • Glass-Insert — For sliding doors and large windows. The pet door is built into a replacement glass panel. Clean, secure, and weatherproof.
    • Wall-Mounted — Installed through an exterior wall. Great for homes without a suitable door. We frame, seal, and finish the opening.
    • Door-Mounted — Installed directly into a solid exterior door. The most common and affordable option.
    • Window-Mounted — Fits into a sash window, often with a permanent glass panel below.

    Call 517-543-2760.

    Cat using pet door

    What Size Pet Door Does My Dog or Cat Need?

    • Measure Height — From floor to the top of the shoulders, plus a couple of inches of clearance.
    • Measure Width — The widest part of your pet (usually shoulders or hips), plus an inch or two.
    • Cats & Small Dogs — Small doors work fine, but make sure the flap is easy for them to push.
    • Large Breeds — Bigger doors need reinforced flaps and often a taller opening. Great Danes and Mastiffs need custom sizing.

    Call 517-543-2760.

    Electronic smart pet door microchip

    Are Pet Doors Energy Efficient and Secure?

    • Double or Triple Flaps — Insulated flaps that seal against drafts.
    • Magnetic Closures — Flaps that snap shut and stay sealed.
    • Weather-Tight Frames — Sealed edges that block rain, wind, and snow.
    • Locking Covers — Slide-in security panels that lock the door shut when you are away or at night.
    • Electronic Doors — Flaps that open only for a microchip or collar tag, keeping out stray animals and raccoons.

    Call 517-543-2760.

    How Long Does Pet Door Installation Take in Charlotte?

    Most pet door installations are done in a single visit:

    Glass-insert — 1-2 hours, including measuring, fabrication wait, and swap-in.

    Door-mounted — Under an hour, cut and sealed into your existing door.

    Wall-mounted — A few hours, depending on wall construction and finishing.

    Call 517-543-2760.

    Glass insert pet door sliding glass door

    Manual vs. Electronic Pet Doors — Which Is Right for My Pet?

    • Manual Doors — A simple flap your pet pushes open. Affordable, reliable, and no batteries or programming. Add a locking cover for night.
    • Electronic Doors — A flap that unlocks only for your pet’s microchip or a collar tag. Keeps out raccoons, stray cats, and the neighbor’s dog.
    • Insulated Flaps — Available on both types. Double or triple flaps seal against Eaton County winters.

    Call 517-543-2760.

    Wall mounted pet door framed opening

    Can I Install a Pet Door Myself?

    • Glass Is Unforgiving — Cutting glass for a glass-insert door requires a tempered panel and exact measurements. One mistake and the panel is ruined.
    • Sealing Matters — A DIY wall or door install that is not sealed right leaks air and water, and Michigan winters will find every gap.
    • Correct Sizing — A door that is too small frustrates your pet; too big lets in drafts and pests.
    • Safety — Tempered glass and proper framing are not worth risking a trip to urgent care over.

    Call 517-543-2760.

    Related Glass Services in Charlotte

    We do the doors and windows your pet door lives in:

    💠 Patio door installation in Charlotte

    💠 Window glass repair in Charlotte

    💠 Window and door screens in Charlotte

    Call 517-543-2760.

    Dog passing through pet door

    Pet Doors for Charlotte’s Four Seasons

    • Real Seasons — Charlotte pets live through the real thing — Michigan winters with 38 inches of snow and -31°F nights, then humid summers.
    • Draft Risk — A cheaply installed pet door is a permanent draft, and in January you will feel it every time the wind blows.
    • Built for Michigan — We build for that: insulated flaps, magnetic seals, and weather-tight frames rated for Eaton County weather.
    • Freedom Without Drafts — Your pet gets freedom; your home keeps its heat. That is the whole point of a properly installed pet door.

    Call 517-543-2760.

    Pet Door Service — Charlotte Area

    We get to every corner of Charlotte fast:

    Charlotte & Eaton County

    • Downtown Charlotte — Historic homes near the courthouse square
    • Charlotte West & East — Neighborhoods along the Battle Creek River
    • Eaton & Carmel Townships — Rural homes and acreages
    • I-69 Corridor — Newer subdivisions
    • Near Bennett Park, Dean Park, Performing Arts Center —

    Surrounding Cities

    • Potterville — 7 mi NE
    • Eaton Rapids — 12 mi SE
    • Olivet — 10 mi S
    • Bellevue — 10 mi SW
    • Vermontville — 12 mi W
    • Nashville — 15 mi NW
    • Dimondale — 15 mi NE
    • Grand Ledge — 18 mi N
    • Mulliken — 10 mi NW
    • Lansing — 21 mi NE

    Call 517-543-2760.

    Service area

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    Pet Door FAQs

    Most standard sliding doors, yes. We measure your door and fabricate a glass-insert panel to match. Some very old or custom doors may need a wall-mounted or door-mounted option instead — we will tell you what works.

    Not if it is installed right. We use insulated flaps, magnetic closures, and weather-tight frames that seal against Eaton County wind and cold. A properly installed pet door is no draftier than a regular door.

    A glass-insert pet door is removable. It swaps into the sliding track and can be taken out to restore the original glass. Perfect for renters or resale.

    Yes. Electronic pet doors use a microchip or collar tag so only your pet can open the flap. Manual doors can add locking covers for night and when you are away.

    Yes. Window-mounted and wall-mounted pet doors are both options, depending on how your home is laid out.

    We measure the height at your pet shoulders and their widest point, then add clearance. We will size the door so your pet moves through comfortably without letting in drafts.