How to Fit a Tubular Latch: Expert Guide by T.H. Wiggans Ironmongery Ltd

Fitting a tubular latch can be a straightforward task if you have the right tools and knowledge. Whether you're a professional tradesperson, an architect, a DIY enthusiast, or someone looking to refurbish their home, this guide from T.H. Wiggans Ironmongery Ltd in Kendal, Cumbria, will provide you with step-by-step instructions to ensure a seamless installation. At T.H. Wiggans, we've been supplying high-quality architectural ironmongery and general hardware since 1976, making us the leading supplier in the Lake District area.

A tubular latch is a simple mechanical device used on internal doors where no lock is needed. It is an evolution of the mortice lock, designed to be installed with minimal drilling and cutting. The tubular latch is typically mortice fitted into the door, providing a flush finish.

A tubular latch uses a spring-assisted mechanism to keep a door closed. When the door handle is turned, the latch retracts, allowing the door to open. It is the most common latch used in homes due to its simplicity and effectiveness.

Tubular latches offer several benefits, including:

• Ease of Installation: Minimal drilling and cutting are required.
• Versatility: Suitable for a variety of internal doors.
• Aesthetic Appeal: Provides a clean, flush finish.
• Durability: Built to last with robust construction.

To choose the correct tubular latch, measure the width of your door stile and halve the measurement to determine the backset. The backset is the distance from the edge of the door to the spindle mechanism on the latch. Common backset sizes include 44mm for a 63mm case and 65mm for a 76mm case.

• Drill & 25.4mm (1”) drill bit
• Mallet
• Chisel
• Posidrive screwdriver
• Pencil
• Masking tape

Using a pencil, mark the door edge for the height and width of the mortice, and also for the forend. Ensure these markings are precise, as they will guide your drilling and chiseling.

Use a 1” drill bit to drill the mortice. Ensure the mortice is smooth and free of shavings or swarf. Use tape to mark the correct depth on the drill bit. The required depth is the latch body length plus the fixed forend and loose faceplate.

Insert the latch body into the mortice and draw around the faceplate. Chisel out to the required depth, ensuring a snug fit for the faceplate.

On either face of the door, mark the required hole centers for the follower and accessory bolt-through fixings, and drill accordingly. Ensure no holes are drilled while the latch is in the door to avoid damage.

Insert the latch, including the loose faceplate, into the mortice. Ensure the bevelled face of the latch is facing the frame direction. Fix it in place with the included screws. Check the latch operation to ensure it retracts and extends smoothly.

With the latch fitted, close the door gently against the frame and mark the top and bottom edge of the latch on the door frame. Transfer these marks to the inside of the frame rebate, marking an additional horizontal line approximately 2mm above the top line for clearance.

Identify the resting position of the latch and draw around the strike plate. Chisel out accordingly for the strike plate, ensuring it is flush with the frame. Adjust the anti-rattle tabs as necessary. Fix the strike plate in place with screws and check the alignment.

Close the door to check the proper operation of the latch and make any necessary adjustments. Ensure the latch engages smoothly with the strike plate and the door closes securely.

At T.H. Wiggans, we stock and supply a large range of tubular latches. They come with various body lengths, including 64mm (2 1/2"), 78mm (3"), 104mm (4"), 129mm (5"), and 150mm (6"). The most popular sizes are 64mm and 78mm. Traditionally, 64mm (2 1/2") tubular latches are used with handles on backplates, 78mm (3") tubular latches are used with door handles on a rose, and tubular latches above are usually used with mortice knobs to move the knob away from the door casing. Please note the mm dimensions may differ depending on the manufacturer.

Regular maintenance is crucial to ensure the longevity and proper function of your tubular latch. Check that the lock and strike plate are correctly aligned and that the fixing screws are tight. Lubricate the latch mechanism periodically to maintain smooth operation.

If the latch or strike plate is misaligned, the door may not close properly. Adjust the positioning of the strike plate or latch as needed.

If the latch mechanism is stiff, check for debris or shavings in the mortice and clean it out. Lubricate the latch with a suitable lubricant.

Ensure all screws are tightened securely. Loose screws can cause the latch to misalign or malfunction.

For professional tradespeople and architects, consider the following advanced tips:

• Use a Router: For precise morticing, use a router with a template.
• Opt for High-Quality Latches: Invest in high-quality tubular latches for enhanced durability and performance.
• Customize Faceplates: Choose faceplates that match the door hardware for a cohesive look.

At T.H. Wiggans Ironmongery Ltd , we offer a wide range of tubular latches to suit various needs. Our expert staff can help you select the right latch for your project. Visit us at Unit 10, Lake District Business Park, Mint Bridge Road, Kendal, Cumbria, LA9 6NH, or contact us at 01539 727188.

By following this comprehensive guide, you can confidently install a tubular latch on your internal doors. At T.H. Wiggans Ironmongery Ltd, we offer a wide range of high-quality tubular latches and other architectural ironmongery to suit your needs. Visit our showroom in Kendal or contact us at 01539 727188 for expert advice and top-quality products.