Wide London Pattern Brick Trowel — CO2 Welded

• Art. Nr: 129721, 120721–122721 (4 sizes)
• Sizes: 9"–12" (229–305 mm)
• Material: Carbon steel, polished blade
• Construction: CO2 welded blade and shank
• Handle: Soft grip, BF21

Product Name & Model

Product name: Wide London Pattern Brick Trowel
Construction line: CO2 Welding Carbon Steel

Art. Nr (four sizes): 129721 (9"), 120721 (10"), 121721 (11"), 122721 (12").

The four art numbers are one product family in one blade pattern, differing only in blade size. They are supplied as a single range under the designation "Wide London Pattern Brick Trowel / CO2 Welding Carbon Steel", alongside a second Wide London line built by a different process (forged).

Alternative construction. The identical Wide London blade geometry is also built as Forged in One-piece High Carbon Steel in the same four sizes: 029721 (9"), 020721 (10"), 021721 (11"), 022721 (12"). The two constructions are compared in detail under CO2 Welded vs. One-Piece Forged below, and the choice between them is the main purchasing decision for this product.

Related patterns in the Leading Tools range. Philadelphia Pattern Brick Trowel (forged 009721 / 000721–002721, CO2 welded 109721 / 100721–102721) and Narrow London Pattern Brick Trowel (forged 019721 / 010721–012721, CO2 welded 119721 / 110721–112721). All three patterns are offered in both constructions, so a buyer can hold construction constant and compare patterns, or hold pattern constant and compare constructions.

Core Features

CO2 welded construction

The construction line for this product is "CO2 Welding Carbon Steel". The blade and the shank are joined by CO2 welding. This is a different route from the one-piece forging used for the Wide London Forged line.

The construction in this line is CO2 welding, the blade material is carbon steel with a polished finish, and the handle is a soft grip, BF21.

Wide London blade profile

The Wide London is the widened member of the London family. The London pattern proper has a narrower blade with a rounded heel that carries mortar forward; the Wide London is simply wider at the heel than the London and therefore collects more mortar per load, which suits it to brick and to wider units.

Two consequences follow directly from that extra heel width, and they are the reason a buyer chooses this pattern:

• More mortar per scoop than a narrow London, without moving to the deep square-heel Philadelphia section.
• A wider mortar footprint per pass, which suits units wider than the standard UK brick format.

Polished carbon steel blade

Every trowel in this family has a polished carbon steel blade. Carbon steel is the traditional brick-trowel material, but it must be wiped dry and thinly oiled after use or it will rust. Stainless steel has high corrosion resistance and low maintenance; chlorinated water, coastal air or prolonged soaking can still cause rust spots on stainless steel, so rinse with clean water and dry after use.

Soft grip handle, BF21

Every trowel in this family carries the soft grip handle BF21, which is used across the Leading Tools brick trowel range.

Shank

The shank is a carbon steel shank joined to the blade by CO2 welding.

Product Advantages

Same blade, CO2 welded construction

This line puts the Wide London blade geometry into a CO2 welded construction. Leading Tools offers the same pattern in the same four sizes in two builds. Choosing the CO2 welded Wide London instead of the forged one keeps the blade profile, the polished carbon steel, the soft grip handle and the size ladder, and changes only how blade and shank are joined.

For heavy daily professional use, the forged line is the better fit; see CO2 Welded vs. One-Piece Forged below.

Brick, block and stone applications

The London pattern is the familiar blade profile in British masonry. The Wide London variant keeps that London feel while widening the heel to carry more mortar. Masons used to London-pattern tools get a familiar handling character, while the wider heel copes with units wider than the standard UK brick format and with the broader mortar beds those units need.

Blade width for wider units

Because the Wide London carries more mortar than the narrow London, it suits brick and wider units. A crew that lays clay brick and occasionally wider units gets more usable range out of a Wide London than out of a narrow London, without the tip-heavy loading character of a Philadelphia. For block laid all day, choose the Philadelphia.

Full four-size ladder in one construction

All four sizes, 9", 10", 11", 12", are available in the CO2-welded build, so a distributor can stock a complete size ladder in one construction rather than mixing constructions across sizes. That matters for range presentation.

How to Use

When to Use

Basic Technique

Working with the Wide London blade

The pattern's defining working property is the wider heel. In practice that changes three things in the cycle above.

Loading. More mortar arrives on the blade per scoop, which reduces the number of trips to the mortar board per course. On a long run this is the productivity argument for the pattern.

Spreading. A wider load spread over a wider footprint means the bed reaches full width in fewer passes on wide units. On standard clay brick the same property means the mason must be more deliberate about how much mortar leaves the blade, or the bed will be over-thick and squeeze out on the face.

Carrying forward. The London family geometry carries mortar forward toward the point. The mason works with that: mortar is delivered from the front third of the blade, not tipped off the heel.

Application: face brickwork and exposed brick

Exposed brickwork is judged on the joint, so the bed must be even and the face must stay clean. Two habits matter with a wide blade. Put down slightly less mortar than feels natural for the blade size, because the wider footprint compensates.

And strike off squeeze-out promptly rather than letting it stiffen, because dragging stiffened mortar across a face brick smears it. Furrow or open the bed as the mortar and the unit require, and keep the course height consistent.

Application: concrete masonry units (CMU)

For concrete masonry units laid all day, choose the Philadelphia. The Wide London suits occasional wider units; for these specify 11" or 12" (121721 or 122721), or the forged 021721 / 022721 for daily professional use.

Application: brick and wider units

The Wide London is a fit for crews that lay brick and occasionally wider units, because its wider heel carries more mortar while its blade profile stays inside the London handling family that most brick masons are trained on. One trowel then covers both without relearning the tool.

Application: mortar workability and weather

Mortar consistency governs everything the blade does. Mix to a consistency that spreads smoothly and holds a furrow, adding water gradually. In hot or windy weather evaporation stiffens the bed before the brick goes down, so spread shorter beds: three bricks is already the working guide, and shorten them further rather than fighting stiffened material. Cold weather works the other way: below 4°C / 40°F hydration and setting slow down, so the priority is protecting the mortar from freezing.

Working habits for the CO2 welded trowel

• Do not use the blade as a pry bar to lift units or lever material.
• Do not hammer the blade against masonry to break it up; tap the brick, do not strike the wall.
• Do not throw the tool into a mixing tub or a bucket of stiff mortar and lever it out.
• Do inspect the blade–shank join whenever the tool is cleaned. Cracks in the blade and in the handle are standard trowel inspection points, and on a welded tool the join is the addition to that list.

FAQ

Q1. What is the difference between the Wide London and the standard London pattern?
A. The Wide London is wider at the heel, so the blade carries more mortar. The standard London is narrower, with a rounded heel that carries mortar forward. Masons used to a London pattern adapt to the Wide London immediately.

Q2. Should I choose the CO2 welded or the forged version?
A. Both are Wide London pattern in the same four sizes, in polished carbon steel with a soft-grip handle. The forged line is made in one piece, with no joint at the blade heel and shank, while this CO2 welded line joins blade and shank by weld. The forged line suits daily professional laying and heavier working loads; the CO2 welded line suits general laying and lighter duty, with the same blade shape and sizes.

Q3. Which size should I buy?
A. 10" (120721) is the general-purpose size. If your hand tires, go shorter; if the work is block or wide-format units, go 11"–12".

Q4. How do I clean it and keep it from rusting?
A. Clean the blade right after use rather than at the end of the day, with water and a nylon brush; never use a wire brush or wire wheel, which scratches the blade surface.

If mortar has dried hard, remove it with a plastic scraper or nylon brush instead of chipping it, and do not leave the blade soaking for long periods. Dry it fully, wipe on a thin film of tool oil, and hang it on a rack or keep it in a tool box rather than in a damp bag.

Q5. What should I not use it for?
A. Do not use the blade to pry brick or as a pry bar; to break or cut brick use a brick hammer or bolster. For heavy daily professional use, choose the forged line. If you find a hairline crack where the blade meets the shank, stop using the tool and replace it.

Specifications Overview

Specifications

CO2 Welded vs. One-Piece Forged: the structural difference

Both lines carry the same Wide London blade geometry in the same four sizes. The difference is entirely in how blade and shank are joined.

Each construction suits different work.

Forged line. A forged trowel is made from one piece of high-carbon steel, so blade, heel and shank are formed together. It suits heavy daily professional use.

CO2 welded line. Blade and shank are joined by CO2 welding. It suits general laying and lighter use, with the same blade shape and sizes. Check the blade–shank weld whenever the tool is cleaned (see Care & Maintenance below).

Pattern comparison: Wide London vs Narrow London vs Philadelphia

Buyers usually choose pattern before size, and Leading Tools carries all three patterns in both constructions.

As a rule of thumb: choose the pattern by the unit you are laying, the construction by how hard the tool will be worked, and the size by the operator. Clay brick goes narrow London, block and large stone go Philadelphia, and Wide London sits between them for wider units.

Selection Guide

Step 1: Choose the construction

Step 2: Choose the size

Sizing by operator experience. A 9" blade is a common entry-level size, because a smaller, lighter blade builds technique without fatigue. Shorter blades of 10–11" also feel controllable for beginners. In every case, a beginner who is struggling should go shorter, and 10" is a sound starting point.

Sizing by unit and by joint. This is how the choice is usually made on site:

• Standard clay brick: 9"–10" is comfortable; 11" if the work rate is high.
• Oversized, engineering or wide-format brick: 11"–12", where the extra heel width of the Wide London earns its keep.
• Standard 10 mm (3/8") bed joints: 9"–11".

Step 3: Blade material

This line is built in polished carbon steel only.

If a customer asks for stainless, the trade-off is this: carbon steel must be wiped dry and thinly oiled after use or it will rust, while stainless has high corrosion resistance and low maintenance, though chlorinated water, coastal air or prolonged soaking can still cause rust spots on stainless, so rinse with clean water and dry after use. Contact Leading Tools sales for stainless availability.

Step 4: Handle

Every art number in this family carries the soft grip handle BF21. Other handles can be fitted on request; contact Leading Tools sales.

Full Size Reference

All four art numbers for the Wide London Pattern Brick Trowel — CO2 Welded.

Cross-reference: same blade, forged construction:

Inch-to-millimetre conversions use 1" = 25.4 mm.

Care & Maintenance

Carbon steel is the material that makes this tool feel right and the material that punishes neglect. Daily cleaning is the single highest-value maintenance action.

After each use: daily cleaning

Mortar that hardens on the blade holds moisture against the steel and causes rust, which is why cleaning is a same-day job rather than a weekly one.

Rust prevention and storage

• Dry completely before the tool goes away: this is the whole of rust prevention on carbon steel.
• Apply a thin, even film of tool oil over the blade and the shank. A thin film is enough; pooled oil collects dust.
• Store dry and hung, or in a dedicated tool box; do not stack tools flat where dust and damp collect.
• Never store the tool in a closed bag still damp from washing.
• For long storage of weeks or months, wrap the blade in lightly oiled cloth or waxed paper.
• If rust has already formed, remove it with a fine abrasive pad and re-oil immediately. Acid cleaners are not recommended.

Regular inspection, including the weld area

Check the trowel regularly for signs of wear such as cracks in the handle or chips in the blade. On a CO2-welded tool the blade–shank weld is the addition to that checklist.

Handle care: soft grip (BF21)

The BF21 soft grip needs less maintenance than a wood handle, which is part of why it is the standard fitting here. Wipe it clean with mild soap and water if it becomes contaminated or sticky, rinse and dry it, and inspect the grip for cuts and hardening. Cement dust left in the grip texture is abrasive against the palm and shortens grip life, so cleaning the handle is worth the thirty seconds it takes.

If a wood handle is fitted on request, it needs periodic oiling with boiled linseed oil to stay moisture-resistant, fine-sanding of any raised grain or splinters, and the same crack inspection.

Edge maintenance

The blade edge is used for trimming and striking off, and it dulls and chips with use. Dress it with a fine single-cut mill file or a fine stone, following the original factory bevel, stroking in one direction, and oiling immediately afterward. Do not reprofile the edge into something the factory did not grind: the blade's flex behaviour and the way it releases mortar both depend on the original geometry.

End of life

A brick trowel is a consumable in professional use. Replace the tool rather than repairing it when: the weld join shows any crack; the blade has lost enough material to a re-dressed edge that it no longer meets the line; the handle is cracked; or pitting from rust has gone below the surface. Do not attempt to re-weld a cracked join; replace the tool instead.