Door Installation & Replacement
Your doors do more than look good, they protect your home, control energy loss, and create a first impression every day. At CAP Contracting, we install and replace doors with clean craftsmanship, reliable materials, and a process that respects your time and your home.
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Door Services We Offer

Entry Door Replacement
Old, warped, or leaky entry doors can drive up energy costs and compromise security. We install entry doors with proper framing, sealing, and hardware for a tight, solid fit.

Patio & Sliding Glass Doors
Sticky sliders and broken tracks are common. We replace patio doors for smoother operation, better insulation, and improved views—without shortcuts on flashing and water protection.

Storm Doors
Add another layer of protection against wind-driven rain and temperature swings, plus ventilation options for spring and fall.

Interior Doors
Replacing interior doors can update the look of a home and improve privacy and noise control—especially when existing doors don’t latch or rub.
Door Repairs
If a full replacement isn’t needed, we can help with common issues like alignment, sticking, hardware problems, and weatherstripping.
Signs It's Time to Replace Your Door
- Drafts, cold spots, or visible light around the frame
- Sticking, rubbing, or difficulty latching
- Rot, swelling, cracks, or water damage
- Condensation between glass panes (for doors with glass)
- Rising energy bills or hot/cold rooms near the entry
- You want better security and upgraded hardware
Our Door Installation Process
We believe transparency and communication are essential to a smooth project.
Our process ensures you know exactly what to expect from start to finish.
1. Free Estimate & Measurement
We measure the opening, check framing, and talk through door types, features, and finishes.
2. Recommendations That Fit Your Home
We’ll help you choose the right door configuration, insulation level, and hardware based on your needs and budget.
3. Professional Removal & Prep
We remove the old door carefully and inspect for hidden rot or water issues (and address them if found).
4. Install, Seal, and Flash Properly
We focus on the details that prevent future problems: alignment, shimming, fastening, insulation, and sealing.
5. Final Walkthrough & Clean Up
You’ll test operation, locks, and seals with us. We clean up and haul away debris.
6. Warranty Review
We review both manufacturer warranties and our workmanship coverage so you know exactly what’s protected.
Door Options & Upgrades
- Energy-efficient glass + insulated cores
- Multi-point locks / upgraded deadbolts (where applicable)
- Decorative glass + privacy options
- Pet doors / smart lock readiness (if requested)
- Color & finish matching (to complement siding/windows)
Why Homeowners Choose CAP Contracting
Experienced installation (not rushed)
Focus on weatherproofing and fit
Clear communication and clean job sites
Options explained in plain English
No Surprises, No Hidden Costs
We communicate with you clearly so you’ll always know what to expect. No hidden charges, no last-minute surprises.
Backed by an Unbeatable Warranty
We stand behind the quality of our workmanship with a guaranteed satisfaction and functionality warranty on all work we perform.
Serving a Wide Local Area
Centrally located in Pacific, MO, allowing us to efficiently serve homeowners across Franklin County, St. Louis County, Jefferson County, and St. Charles County.
Our Door Installation Service Area
Whether you live in a historic home, a newer development, or a rural property, our team delivers precise installation and reliable recommendations tailored to Missouri’s climate and building styles.
We proudly serve homeowners in:
- Pacific, MO & Surrounding Communities
- Franklin County
Washington, Union, Labadie, St. Clair, Gray Summit, Villa Ridge, Sullivan - Jefferson County
Arnold, Festus, Hillsboro, Pevely, Imperial - St. Louis County
Ballwin, Chesterfield, Wildwood, Eureka, Valley Park, Manchester - St. Charles County
St. Charles, St. Peters, O’Fallon, Lake Saint Louis, Wentzville
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Door Installation and Replacement FAQs
How long does door installation take?
Most standard door replacements can be completed in a day, depending on framing condition and door type.
Do you replace the entire frame or just the slab?
We’ll recommend the best approach after measuring and inspecting. A full replacement is often best when there’s rot, drafts, or poor fit.
Can you fix drafts without replacing the door?
Sometimes weatherstripping, thresholds, alignment, and hardware can solve the issue. We’ll tell you honestly if repair is worth it.
Do you haul away the old door?
Yes, removal and cleanup should be part of a professional install.
Can you match the style to my windows/siding?
Yes. We can recommend colors, glass styles, and trim details that work with your exterior.
Work With a Contractor
You Can Trust
Home improvement shouldn’t feel uncertain. Reach out today and get honest recommendations, clear pricing, and workmanship backed by an unbeatable warranty.
Transparent Pricing
Guaranteed Workmanship
Local Expertise
We guarantee someone will show up for your scheduled appointment. We do not "no-show"!
Contact us online or call us today!
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