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Mortise locks

Mortise Lock Repair & Installation in Toronto

Mortise lock sticking, latch not catching, handle drooping or key hard to turn? We repair, rekey and install mortise locks on houses, condos, offices and storefronts across Toronto and the GTA.

  • Family owned since 2010
  • Licensed and insured
  • Free quotes
  • Mobile: we come to you
Brass mortise plate and knob on a red entrance door in a brick wall
4.9

Google rating, 460+ reviews

Latch sticks

The latch does not spring back, or the door will not stay closed.

Handle droops

A broken spring inside the lock body lets the lever or handle sag.

Thumb latch will not open

On a handleset, pressing the thumb latch no longer pulls the latch back.

Key hard to turn

The key turns with force, turns without doing anything, or the cylinder wobbles.

4.9Google rating
460+Google reviews
2010Family owned since
FreeQuotes before work starts
The basics

What a mortise lock is

A mortise lock sits in a deep pocket (the mortise) cut into the edge of the door. The latch, the deadbolt and the parts that work them are all inside one steel lock body. The handles or knobs and a threaded cylinder are fitted to that body from the outside.

A regular cylindrical lock only needs two round holes drilled through the door. A mortise lock needs a door thick enough for the pocket, usually 1-3/4 inch or more, and the lock body has to match the pocket that is already there. That is why a mortise lock is not swapped like an ordinary knob or lever.

You find mortise locks on older Toronto homes with brass handlesets, on many high-end entrance sets, on aluminium storefront doors, and on commercial doors in offices, schools and apartment buildings.

Mortise lock in the narrow stile of an aluminium storefront door
A mortise lock in the narrow stile of an aluminium storefront door.
Brass handleset plate with its cylinder held in a hand
A brass handleset plate and its mortise cylinder taken off the door.
Repair options

Repair, rekey or replace

Many problems come from a broken spring, a loose cylinder set screw or a door that has dropped out of line with the strike. They can often be repaired without replacing the whole lock.

Repair the lock body

We take the body out, clean it, replace broken springs and worn parts where parts exist, and adjust the strike.

Rekey the cylinder

We rekey the threaded mortise cylinder so old keys stop working, or fit a higher security one.

Replace the lock body

We match the backset, faceplate size, function and handing so a new lock fits the existing pocket.

Add a deadbolt

For an old mortise door with a weak latch, see adding a deadbolt above a mortise lock.

Brass mortise handleset fitted on the edge of an open front door
A mortise handleset on a front door, seen from the door edge.
Homes and businesses

Mortise locks we work on

  • Homes and condos: brass and decorative entrance handlesets, including Emtek and Baldwin, and the original mortise locks on many older houses.
  • Offices and buildings: heavy duty commercial mortise locks with levers, in classroom, office, storeroom and privacy functions. On fire-rated doors we use hardware listed for that door.
  • Storefronts: narrow stile mortise deadlocks and latches on aluminium and glass doors. See Adams Rite locks.
  • New installs: we can cut the pocket for a mortise lock box in a suitable solid door.
How it works

How a mortise lock visit works

  1. Send photos

    Call us, or email photos of the lock, the faceplate on the door edge and any brand name to [email protected].

  2. Free quote

    We look at the lock and give you a price before any work starts.

  3. Repair or install

    We repair the body, rekey or replace the cylinder, or fit a new mortise lock that matches your door.

  4. Test before we leave

    We test the key, handles, latch and deadbolt from both sides, and check the door closes and locks without force.

Our work

Mortise lock jobs we have done

Photos from mortise lock repairs and installations by GTA Lockman.

Posted on Google Google
Mary MacPhee profile picture
Mary MacPhee
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We live in downtown and needed keys for our mailbox. David was a pleasure to deal with. I strongly recommend this company! Great service, flexible and easy to pay ! They accept all credit cards and debit!
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Cecilia Macphee profile picture
Cecilia Macphee
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We live downtown Toronto and had a great experience with David today. Our mailbox key broke and we needed two new ones ! Job was done in a half hour! Strongly recommend this company!
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Vanessa Ramos profile picture
Vanessa Ramos
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Sol came to over to help with our lock. Excellent communication, he was able to come right away and in a timely manner. The price is very reasonable, and he did a great job. Highly highly recommend.
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Jeffrey Jew profile picture
Jeffrey Jew
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Sol was professional, friendly, and efficient. Pricing was fair. I received top notch quality service and I definitely recommend their services.
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Alice Kim profile picture
Alice Kim
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Thank you David for your exceptional customer service and quality workmanship. Great on-the-spot problem solving and minimally disruptive to my work day. Would highly recommend.
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Joseph Kim profile picture
Joseph Kim
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Exceptional service, professional and courteous. Shaul conducted the locksmithing service and shows pride in his craft and is extremely knowledgeable. He was also able to provide many different lock options to suit my needs. I was also very impressed with his honesty. There was no pressure to upsell, he provides you the options and gives honest feedback on what he recommends. If you are serious about security, these are the professionals that wont waste your time and money. Thank you Shaul!
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Zhanyl Birru profile picture
Zhanyl Birru
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I didn’t my car keys with Sol.He was very professional . He come to my location and did in short time. I definitely recommend him to my friends and family.Thank you.
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Vivien Qian profile picture
Vivien Qian
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Technician is professional and skilled. They explained the options with details and offer affordable and the best solutions.
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tiraan tham profile picture
tiraan tham
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
David was really friendly and professional. Persistent and positive. And rather than using a cuff right away to open my door, he worked on picking the lock and we didn’t damage the door at all!!!
FAQ

Mortise lock questions

Answers about repairs, rekeying and replacing mortise locks.

Related: commercial door repair, rim and mortise cylinders and storefront door lock repair.

What is the difference between a mortise lock and a cylindrical lock?

A cylindrical lock fits into two round holes drilled through the door. A mortise lock sits in a rectangular pocket cut into the door edge, with the latch, deadbolt and working parts in one steel body. Mortise locks are heavier and are built for more use.

Can a mortise lock be repaired, or does it need replacing?

Many can be repaired. Broken springs, a loose cylinder, worn parts and a misaligned strike are common fixes. If the body is badly worn or parts are not available, we replace it with one that fits the existing pocket.

Can you rekey a mortise lock?

Yes. The threaded mortise cylinder can be rekeyed so old keys stop working, or replaced with a new or higher security cylinder.

Can you replace an old mortise lock with a modern one?

Usually, yes. We match the backset, faceplate size and function so a new mortise lock fits the old pocket. Where that is not possible, we explain the options, including conversion plates for a cylindrical lock.

Why does my handleset thumb latch no longer open the door?

Most often a spring or a part inside the mortise body has broken, or the handleset has come loose from the body. We take it apart, repair it and adjust it.

Do you work on commercial mortise locks?

Yes. We repair, rekey and install commercial mortise locks on office, school, apartment and storefront doors. See our commercial locksmith services.

How much does mortise lock repair cost?

It depends on the lock, the parts it needs and whether it is repaired or replaced. Email a photo of the lock to [email protected] for a free quote.

When are you open?

Monday to Thursday 8:30 AM to 9 PM, Friday 8:30 AM to 4 PM and Sunday 9:30 AM to 9 PM. Closed Saturday.

Mortise lock giving you trouble?

Call (647) 955-3277 or email photos of the lock and door edge to [email protected] for a free quote. We come to your home or business anywhere in Toronto and the GTA.

Hours

Monday to Thursday: 8:30 AM to 9:00 PM
Friday: 8:30 AM to 4:00 PM
Sunday: 9:30 AM to 9:00 PM
Saturday: Closed

Based in Thornhill, Ontario. See our service areas or contact GTA Lockman.

Free quote

Request a Free Quote

Tell us what you need and where. We reply during business hours and confirm the price before booking.

Call (647) 955-3277 Mon–Thu 8:30 AM–9:00 PM · Fri 8:30 AM–4:00 PM · Sun 9:30 AM–9:00 PM · Closed Saturday