Treasure Coast Locksmith provides double door hardware services in Port St. Lucie, Stuart, Fort Pierce, Vero Beach, Jensen Beach, and across the Treasure Coast. Call (772) 758-1322 for mobile service. Double door (pair door) hardware has unique requirements beyond single door applications. Main components: astragals (cover meeting stile gap), meeting stile seals, SVR/CVR exit devices (latches at top and bottom), and proper alignment for smooth operation.
Double doors - also called pair doors - appear throughout commercial buildings as main entries, corridor doors, retail entries, and assembly occupancy exits. They have unique hardware requirements beyond single doors. The meeting stiles (where the two doors come together) need sealing, the active leaf needs locking hardware, the inactive leaf needs a way to stay in place, and exit devices must work on both doors.
Common double door hardware includes astragals (metal strips covering the meeting gap), meeting stile weatherstripping, flush bolts or vertical rod exit devices on the inactive leaf, active leaf lockset or exit device, and proper coordination between the two doors. Each element affects the overall operation and security.
Treasure Coast Locksmith services commercial double doors across offices, retail plazas, schools, hospitals, and institutional buildings in the tri-county. Hardware replacement, alignment service, astragal installation, and pair door coordination.
Double door specialty
- Astragal installation - meeting stile sealing.
- SVR/CVR exit devices - pair door code compliance.
- Flush bolt service - inactive leaf locking.
- Alignment correction - smooth operation.
- Coordination devices - proper closing sequence.
- Meeting stile seals - weatherproofing.
- Pair door rekey - both leaves coordinated.
- Storefront pairs - aluminum pair doors.
Common double door scenarios
Real pair door service situations.
Typical calls
- Port St. Lucie office with SVR exit device rebuild on pair doors.
- Stuart retail with astragal replacement on main entry.
- Vero Beach school with flush bolt service on classroom pair doors.
- Fort Pierce warehouse with pair door alignment correction.
- Jensen Beach church with pair door exit device install.
- Tradition medical with meeting stile seal replacement.
- Palm City hotel with coordination device adjustment.
- Treasure Coast commercial tenant with pair door rekey.
Double door hardware and operation
Double doors require coordinated hardware that differs from single door applications. Understanding the components helps specify service and replacements.
Active vs Inactive Leaf: In pair doors, one door is typically the "active" leaf (opens first, has the main lockset) and the other is "inactive" (stays closed unless both doors need to open). Some pair doors have both leaves as active (full pair operation for wide entries). Determines which hardware goes where.
Astragals: Metal strips covering the meeting stile (vertical gap between the two doors). Astragals seal against air, light, pests, and smoke. Fire-rated astragals required on fire-rated pair doors.
Types include:
• T-astragal - attaches to active leaf, overlaps inactive
• Split astragal - one piece on each leaf meeting in the middle
• Applied astragal - surface-mounted strip
Selection depends on door type and sealing requirements.
Meeting Stile Weatherstripping: Silicone or neoprene seals between the pair doors at the meeting edge. Complement or replace astragals for weather sealing. Critical for exterior pair doors and fire-rated applications.
Flush Bolts: Vertical bolts in the inactive leaf that engage into the header and threshold. Hold the inactive leaf in place when locked. Operated manually (push or pull tab) to extend or retract.
Automatic flush bolts retract when inactive leaf opens; manual require operation each time.
Surface Vertical Rod (SVR) Exit Devices: Used on pair doors where latches engage at top and bottom instead of on the side. Each door has an SVR device with rods to top and bottom strikes. Allows both doors to operate from exit devices for assembly occupancy compliance.
Von Duprin 9827, Sargent 80, Corbin Russwin ED5000 SVR are common.
Concealed Vertical Rod (CVR) Exit Devices: Similar to SVR but rods run inside the doors rather than on the surface. Cleaner appearance but requires door construction with internal rod channels. More expensive than SVR but common in new construction.
Coordinators: Devices that ensure the inactive leaf closes before the active leaf on pair doors with overlapping astragals. Without coordinator, active leaf can close while inactive is still partially open, causing astragal collision. Common on fire-rated pair doors where proper sealing is critical.
Alignment: Pair doors must be properly aligned - both leaves hung square and matching each other. Misalignment causes astragal collision, incomplete sealing, and operational problems. Correction includes shimming hinges, adjusting strike positions, and sometimes frame work.
Lockset Options: Active leaf can have standard commercial lockset (cylindrical, mortise) or exit device. Combined with inactive leaf flush bolts or SVR/CVR, provides full pair door function. Master key integration coordinates both leaves.
Storefront Pairs: Aluminum storefront pair doors use specific Adams Rite and storefront hardware. Both leaves with storefront locking hardware, meeting stile configuration for aluminum, and specialty astragals designed for storefront doors. Different service approach than hollow metal pair doors.
Fire-Rated Pair Doors: UL-listed hardware required for fire-rated pair doors. Astragals, SVR/CVR devices, flush bolts, and coordinators all need fire ratings. Non-rated hardware invalidates fire rating.
See NFPA 80 for pair door fire requirements.
Double door service process
Assessment
Call (772) 758-1322. Describe pair door configuration and issues.
Hardware evaluation
Inspect astragals, bolts, exit devices, and alignment.
Service or replacement
Repair or replace as needed, verify coordination.
Operation verification
Test both leaves, alignment, and coordinated closing.
Double door tips
- Maintain pair door alignment to prevent astragal collision.
- Use coordinators on fire-rated pair doors.
- Specify UL-listed hardware on fire-rated pair doors.
- Replace worn astragals promptly to maintain sealing.
- Service both leaves together for coordinated operation.
- Consider SVR/CVR for assembly occupancy compliance.
Related services
Other Treasure Coast Locksmith services in this cluster.
Double door hardware FAQs
Common questions from Treasure Coast property managers.
How much does pair door service cost?
Astragal replacement: $295-$595. SVR exit device service: $495-$895 per lock. Flush bolt replacement: $195-$395.
Pair door alignment correction: $295-$695. Coordinator install: $195-$395. Comprehensive pair door service: varies.
Free quote.
Can you install pair door exit devices?
Yes. SVR (surface vertical rod) and CVR (concealed vertical rod) exit devices for pair doors. Both leaves operating on exit devices.
Code-compliant for assembly occupancy. Von Duprin, Sargent, Corbin Russwin all available.
What's an astragal?
Metal strip covering the meeting stile gap between pair doors. Seals against air, light, pests, smoke. T-astragal, split astragal, and applied astragal are common types.
Fire-rated astragals required for fire-rated pair doors.
Can you fix misaligned pair doors?
Yes. Alignment correction includes shimming hinges, adjusting strike positions, sometimes frame work. Misalignment causes astragal collision, incomplete sealing, and operational issues.
Common service call for older buildings with settled frames.
Do you install coordinators?
Yes. Coordinators ensure inactive leaf closes before active leaf on overlapping astragal pair doors. Prevents astragal collision.
Common on fire-rated pair doors where proper sealing is critical.
Can you handle fire-rated pair doors?
Yes. UL-listed astragals, SVR/CVR, flush bolts, and coordinators for fire-rated pair doors. Must use fire-rated versions of each component - non-rated hardware invalidates fire rating.
Documentation for NFPA 80 inspection.
What about storefront pair doors?
Yes. Aluminum storefront pair doors with specific Adams Rite and storefront hardware. Different service approach than hollow metal pair doors.
Common for retail and office building entries.
Can you rekey pair doors?
Yes. Pair door rekey coordinated across both leaves. Active leaf lockset rekey plus inactive leaf if keyed (typically only active leaf has key cylinder).
Master key integration included.
Do you replace flush bolts?
Yes. Flush bolt replacement on inactive leaves. Automatic and manual flush bolts available.
Common service when bolts stick, don't extend properly, or wear out after years of use.
How do I know if coordinators are needed?
Pair doors with overlapping astragal where leaves must close in sequence (inactive first, then active). If doors sometimes collide when closing, coordinator may be missing or failing. Evaluation during service visit.
What about weatherstripping at meeting stile?
Silicone or neoprene seals at the meeting edges between pair doors. Complement astragal for complete weather sealing. Critical for exterior pair doors and climate control.
Can you handle full pair door rebuild?
Yes. Comprehensive pair door service including hardware replacement, alignment, astragal, exit devices, and all coordination. Larger project than single door service but possible for buildings wanting to restore original operation.