Give your pets the freedom to come and go while keeping your home secure and energy-efficient. National Glass & Mirror installs pet doors in glass panels, sliding patio doors, windows, and walls — professionally cut and sealed for a clean, permanent result that won't void your door warranty or compromise your home's insulation.
Call 877-285-2099 for a free estimate.
Free estimate · No obligation
The pet door flap should be at least 1–2 inches wider and taller than your pet's measurements:
A: Sliding door panel inserts range from $200–$600 installed. Glass panel pet doors (which require a new tempered panel) typically range from $400–$1,000+ depending on the glass size and pet door dimensions. Wall-mount installations range from $300–$800. We provide free estimates.
A: Yes, but not by cutting the existing glass. We fabricate a new tempered, insulated glass panel with the pet door opening pre-cut, then swap it for your current panel. The new panel matches your existing glass in thickness, tint, and insulating properties.
A: A professionally installed pet door with quality weathersealing and an insulated flap has minimal impact on energy efficiency. Dual-flap insulated models offer the best thermal performance. The key is professional installation — a poorly sealed pet door can be a significant draft source.
A: Yes. We install extra-large pet doors up to 16" × 24" and can accommodate even the largest breeds. Large pet doors typically require installation in a patio door panel, wall, or oversized window — not standard entry doors.
A: Modern pet doors include locking mechanisms, and electronic models only open for your registered pet. For maximum security, choose a pet door with a steel security plate that locks in place when not in use.
A: Panel inserts take about 30 minutes. Glass panel replacements take 1–2 hours (plus fabrication time for the new panel). Wall installations typically take 2–4 hours depending on wall construction.
