Installing a 3 point lock is one of the most effective ways to improve door security and structural integrity. Unlike a standard deadbolt, this system secures the door at three points along the edge, typically at the top, middle, and bottom. This distributes the locking force evenly and makes it much harder for intruders to force the door open.
Locksmith Guarantee specializes in 3 point lock installation for residential and commercial doors. Whether upgrading an entry door or replacing worn-out hardware, our skilled technicians ensure each component is installed with precision and care.
What Is a 3 Point Lock?
A 3 point lock, often referred to as a multipoint locking system, operates with a central mechanism that controls three separate locking points. When the user lifts the handle or turns the key, all points engage simultaneously. This type of lock is most commonly used on front entry doors, patio doors, and double doors that require extra strength and alignment.
The system typically includes:
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A center latch and deadbolt
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A top bolt that extends into the upper frame
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A bottom bolt or hook that locks into the threshold
Each part works together to keep the door tightly sealed and secure.
Benefits of 3 Point Lock Installation
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✔ Enhanced security – Secures the door at multiple points
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✔ Better alignment – Reduces door warping or sagging over time
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✔ Weather protection – Helps seal out drafts and moisture
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✔ Convenient operation – All locking points engage with one motion
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✔ Long-term performance – Durable and low-maintenance hardware
Step-by-Step Guide to 3 Point Lock Installation
A proper installation ensures the system functions smoothly and provides lasting security. Below is an overview of the key steps our professionals follow when installing a 3 point lock.
1. Inspect the Door and Frame
Before installation, we assess the door material, thickness, and condition. The frame must be strong enough to support multiple locking points.
2. Mark Locking Points
Using a template or measurement guide, we identify where the center, top, and bottom components will be installed. Accurate markings are crucial for alignment.
3. Prepare the Door Edge
We carefully route or chisel the door edge to fit the lock body and faceplate. This step ensures the lock sits flush and operates without friction.
4. Drill and Cut for Top and Bottom Bolts
Access holes are made for the rods or bolts extending to the top and bottom of the door. These must align with reinforced strike points in the frame and threshold.
5. Install the Lock Mechanism
The central gearbox is installed into the prepared opening, and the rods or linkages are attached to the top and bottom components. All parts are tested for smooth movement.
6. Secure the Strike Plates
Strike plates are mounted on the frame and floor where the bolts engage. These are reinforced to handle daily use and resist forced entry.
7. Align and Test the Lock
We check the handle and key function, ensure smooth locking action, and make any necessary adjustments to door alignment or latch tension.
Best Practices for Reliable Installation
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Use high-quality hardware from trusted brands
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Ensure the door is square and the frame is solid
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Choose weather-rated locks for exterior doors
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Avoid excessive force when drilling or chiseling
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Always test the full locking cycle before finishing
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Periodically check for alignment and lubricate moving parts
Locksmith Guarantee takes these steps seriously to ensure your lock works as intended and lasts for years with minimal maintenance.
Applications for 3 Point Lock Installation
This type of locking system is used in a wide range of settings where security and durability are important:
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Main entry doors for residential homes
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Patio and French doors
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Commercial storefronts
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Aluminum and composite doors
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High-traffic access points in offices or buildings
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Double doors with active and passive leaf design
Professional Installation Services
Installing a 3 point lock can be complex, especially when dealing with heavy doors, uneven frames, or non-standard hardware. Our team provides complete installation services, including:
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On-site assessment and hardware selection
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Retrofits for existing doors
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Fresh installations on new construction
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Upgrades from traditional single-point locks
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Repairs and alignment for existing multipoint systems
We ensure that your lock not only works perfectly but also fits the door’s aesthetic and daily use.
Why Choose Locksmith Guarantee?
Choosing us means you are working with professionals who understand the importance of precision, safety, and reliability. We bring the right tools, experience, and care to every 3 point lock installation project.
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Knowledgeable in leading lock systems and brands
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Careful workmanship for proper fit and finish
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Trusted by homeowners and businesses across the area
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Licensed and insured for your peace of mind
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Commitment to customer satisfaction from consultation to completion
Frequently Asked Questions
What is the difference between a standard lock and a 3 point lock?
A standard lock secures the door at one point, usually the center. A 3 point lock secures the door at three locations, offering greater resistance to force and better sealing.
Can you install a 3 point lock on an existing door?
Yes. We can retrofit most existing doors with the proper tools and techniques, depending on the material and structure.
Are these locks suitable for sliding or French doors?
Absolutely. Many models are designed specifically for sliding or French door configurations and include top and bottom locking points.
How long does installation take?
Most installations are completed in a single visit. The exact time depends on door size, material, and any adjustments needed.
Do I need a specific type of handle or cylinder?
Some multipoint systems require compatible handles or cylinders. We help you choose hardware that matches both the lock and the door style.
