Philadelphia Pattern Brick Trowel — Forged

• Art. Nr: 009721, 000721, 001721, 002721, 003721–007721 (9 sizes)
• Sizes: 4-1/2"–12" (114–305 mm)
• Material: High carbon steel, polished blade
• Construction: Forged in one piece (blade, shank and tang)
• Handle: Soft grip, BF21

Product Name & Model

Product name: Philadelphia Pattern Brick Trowel
Construction line: Forged in One-piece High Carbon Steel
Full name: Philadelphia Pattern Forged Brick Trowel

Art. Nr (nine sizes): 009721 (9"), 000721 (10"), 001721 (11"), 002721 (12"), 003721 (4-1/2"), 004721 (5"), 005721 (5-1/2"), 006721 (6"), 007721 (7").

The nine art numbers are one product family in two size groups: 9" to 12" and 4-1/2" to 7". They are listed as two size groups, but both belong to the same line, Philadelphia Pattern Brick Trowel / Forged in One-piece High Carbon Steel.

Other handles can be fitted on request; contact Leading Tools sales.

Alternative construction: the identical Philadelphia blade geometry is also offered as a CO2 Welding Carbon Steel line in the same nine sizes: 109721 (9"), 100721 (10"), 101721 (11"), 102721 (12"), 103721 (4-1/2"), 104721 (5"), 105721 (5-1/2"), 106721 (6"), 107721 (7"). The Specifications Overview below compares the two constructions.

Core Features

• Blade shape: triangular with a wide, square heel and a pointed toe.
• Heel: wide and square. The square heel is the most visible difference between the Philadelphia pattern and the rounded heel of the London pattern, and it is the surface that carries the load when the mason scoops mortar.
• Blade depth: deep cross-section. The wider blade area and square heel are what let this pattern pick up and carry a larger volume of mortar per load than a narrower pattern.
• Balance: forward-weighted; tip-heavy compared with the London pattern.
• Construction: blade, shank and handle tang formed from one piece of high carbon steel, with no welded joint anywhere in the load path.
• Blade finish: polished carbon steel.
• Handle: soft grip BF21 on all nine sizes.
• Handle end-cap: The handle ends in a hard end-cap for lightly tapping units into line and level. The end-cap is fitted on 9" and longer forged sizes; the 4-1/2"–7" sizes do not have this end-cap—do not use the soft-grip butt as a regular striking face on those sizes.
• Size span: 4-1/2" to 12" (114–305 mm), nine sizes in one pattern.

Product Advantages

Shank. The shank lifts the handle clear of the mortar bed and sets the working height of the hand above the blade.

One-piece construction. This trowel is forged from a single piece of high-carbon steel, with no joint between blade and shank. The CO2 welded line in the same geometry (see Specifications Overview below) is made with blade and shank fabricated separately and joined by weld.

Mortar volume per pass. The pattern exists because concrete block (CMU) and larger stone units need more mortar per course than a standard clay brick, and the wide blade with the square heel is what delivers that volume in one pick-up.

More than a laying tool. The same blade is used to strike off and level a bed, cut away mortar squeezed out of a joint, tidy joint lines, and finish stonework. A single Philadelphia trowel therefore covers most of the mortar handling on a wall.

Primary use. Spreading full mortar beds for standard brick courses; loading and placing mortar; bedding block and larger stone units.

How to Use

When to Use

Basic Technique

Correcting unit position (handle end-cap). On 9" and longer sizes: after the unit is placed, tap lightly with the hard end-cap at the butt of the handle to correct position and level; do not use the blade for tapping. The forged blade edge remains suitable for cutting brick.

On 4-1/2"–7" sizes (no end-cap): only occasional light taps with the blade are acceptable; do not use the soft-grip butt as a regular striking face. The forged blade edge remains suitable for cutting brick.

The two errors that cost the most. Pressing the brick down hard instead of tapping it, correctly mixed mortar does not need the force, and gripping the handle too tightly, which is the direct cause of wrist and forearm fatigue over a shift.

Primary Work Cycle

The Philadelphia Forged is the primary mortar-handling tool in a mason's kit. It is the first tool to contact mortar and performs the highest-volume work of the day.

1. Loading. The mason dips the trowel into the mortar. The wide heel and deep blade cross-section allow a large volume of mortar to be picked up in a single dip, typically enough for one full bed joint.
2. Spreading. The mortar is deposited on the course below and spread with the trowel face at roughly 30°, about an inch thick and about three bricks long. The forward-weighted balance means the blade naturally wants to stay flat, reducing the wrist pressure needed to hold an even bed thickness.
3. Furrowing and bed levelling. The point is dropped to about 45° to run a furrow, and the face is used to strike off excess.
4. Picking up and buttering. After spreading the bed, the mason picks up a daub of mortar and butters the end face of the new brick for the head joint. The pointed toe geometry helps scoop and control the lump.
5. Placement. The unit is placed with a positive downward press, not slid, and tapped to level. Force is a sign the mortar is wrong, not a technique.

Technique Notes for the Philadelphia Pattern

Why the wide heel matters. The heel is the platform the blade sits on when the mason scoops. A wider, squarer heel gives a more stable landing surface and reduces the tendency of the trowel to tip or roll when collecting mortar. The square heel is the most visible difference from the London pattern, and it is the reason the pattern carries more mortar per load.

Forward balance and wrist fatigue. Grip tension, not blade balance, is the main fatigue factor.

Cutting away squeezed-out mortar. The practical point: do not wipe mortar flat against the face, cut it away with an upward slicing motion.

What one-piece construction means. Blade, shank and handle tang are the same piece of steel, with no joint between them.

Heavy Commercial and Institutional Bricklaying

In commercial construction: large residential developments, schools, offices, the trowel is in the hand all day.

For this environment, specify from the top of the size range. The 9"–11" sizes (009721, 000721, 001721) carry enough mortar for a full standard course in one load, and where the work is block rather than brick 11" is a common choice.

Heritage and Historic Restoration

Restoration work has a specific profile: bricks are often softer and more irregular than modern production units, joints may be deeper or non-standard, and the same tool stays in use for weeks on one project. The tool is in continuous use, and the forged blade has no joint between blade and shank.

The Philadelphia pattern's wide heel and high mortar capacity also suit the larger mortar volumes that deeper, lime-rich historic bed joints take.

Soft handmade brick: for very soft handmade brick, the London pattern is the better choice: narrower blade and rounded heel. Leading Tools offers both Narrow London and Wide London. Specify Philadelphia where mortar volume per pass is the priority; specify London where control on soft, irregular brick is the priority.

Concrete Masonry Unit (CMU) Laying

This is the application the pattern was designed around. Concrete block and larger stone units need more mortar per course than a standard clay brick, and the wide blade with the square heel is the geometry that delivers it.

Specify 11"–12" (001721, 002721). If a crew is buying one size for mixed brick-and-block work, 11" is the sensible compromise.

The 9"–10" sizes remain workable on CMU but suit clay brick better, where the course height matches the blade's mortar capacity more closely.

Cold and Hot Weather Masonry

In cold weather (below 4°C / 40°F) mortar sets more slowly and must be protected from freezing. In hot weather (above 38°C / 100°F) or in wind, mortar stiffens from evaporation as well as hydration; the wide heel and deep blade let the mason collect and place larger lumps quickly, which helps maintain pace as workability drops.

In adverse weather the maintenance consequence matters as much as the technique: mortar that flash-sets on the blade is what damages the face, so clean the blade more often when the batch is stiffening fast.

FAQ

Q: What is the difference between the Philadelphia and the London pattern, and which do I need?
A: The Philadelphia has a wider blade and a square heel; the London has a narrower blade and a rounded heel. Choose Philadelphia for concrete block and larger stone units, where each course takes more mortar, and London for standard clay brick. Leading Tools offers both Narrow London and Wide London.

Q: What size should I order?
A: The two most commonly used sizes are 10" and 11". For mixed brick-and-block work, 11" (001721) is a sensible single choice.

Q: Should I choose the forged or the CO2 welded version of the same blade?
A: Both lines share the same shape in the same nine sizes. A forged trowel is made from one piece of steel, with no weld between blade and shank. In the CO2 welded line (109721, 100721–107721), blade and shank are fabricated separately and joined by weld, so the weld should be included in the routine tool check.

Q: Mortar sticks to the blade and will not release cleanly. What is wrong?
A: Usually set residue on the blade face. Clean thoroughly after every use and soak off anything that has hardened, using a nylon brush rather than a wire brush. Also check the mortar itself, because mortar that is too wet or too old behaves the same way.

Q: I get wrist and forearm fatigue by the end of the day. Is it the trowel?
A: Check grip tension first: a tight "death grip" is the direct cause, so hold the handle loosely with the thumb forward on top, near the ferrule, so the blade can rotate naturally.

Then check the size, since a smaller blade is easier on the wrist. Then check the mortar: if you are forcing units down instead of tapping them, the mix is the problem, not the tool.

Specifications Overview

Construction: One-Piece Forging

The Philadelphia Forged line is produced from a single piece of high carbon steel, shaped so that blade, shank and handle tang are one integrated part.

One-piece forging has one structural effect that matters to a buyer:

• No weld joint. Blade, shank and handle tang are the same piece of steel, so there is no joint between them.

Specifications

Forged vs. CO2 Welded: Comparison

Both lines share the same Philadelphia blade geometry and the same nine sizes. The difference is entirely in how the blade and shank are joined.

Pattern comparison: Philadelphia vs Narrow London vs Wide London

Buyers usually choose pattern before size, and the Leading Tools range carries all three patterns.

The one-line rule: choose the pattern by the material, choose the size by the operator and the work rate: block and large stone go Philadelphia, standard clay brick goes Narrow London, and Wide London sits between them.

Selection Guide

Available Sizes: Philadelphia Pattern Forged

Size Selection Logic

Which size. The two sizes most commonly used in bricklaying are 10" and 11". As general experience, a smaller blade is easier on the wrist and a larger blade carries more mortar per pass; 10" is a common choice for brick and 11" for block. Treat this as a starting point rather than a specification.

Beginners. A smaller size reduces load while learning; an 11" standard trowel is also a versatile single purchase that is still not too heavy. Either is a reasonable choice.

By trade level:

• Apprentice / light duty: 6"–7" (006721, 007721). Manageable weight and blade area for learning technique without the fatigue of a full-size blade.
• Journeyman / professional residential: 9"–10" (009721, 000721). A common range for active bricklaying.
• Professional commercial: 10"–12" (000721, 001721, 002721). Higher productivity per pass, and the range that suits large-format brick and CMU.

By substrate:

• Standard clay brick: 9"–10" blade. If the work is exclusively standard clay brick, also compare the Narrow London pattern in the Leading Tools range, which is the pattern designed for it.
• Oversized or engineering brick: 11"–12" blade.
• Concrete masonry unit (CMU) and larger stone: 11"–12" blade. This is the substrate the Philadelphia pattern exists for, and 11" is a common size for block.

By repair versus new work. The 4-1/2" to 7" group (003721–007721) is not a smaller version of the same job; it is a different job. These sizes are for pointing-adjacent repair, patching, working inside a confined opening, and training.

Handle Type Selection

All nine Philadelphia Forged art numbers are supplied with the soft grip handle BF21. Other handles can be fitted on request; contact Leading Tools sales.

Full Size Reference

All nine art numbers, complete. Material and construction are identical across the nine; only the size code changes.

Cross-reference: same blade, CO2 welded construction: 103721 (4-1/2"), 104721 (5"), 105721 (5-1/2"), 106721 (6"), 107721 (7"), 109721 (9"), 100721 (10"), 101721 (11"), 102721 (12"). Nine sizes, matching the forged line one for one.

Care & Maintenance

After Each Use

Immediate cleaning is the single most important maintenance action, and it is the one lever that most affects how long the tool lasts. Mortar left to set creates an uneven blade face that accelerates wear and spoils mortar release.

• Scrape off excess mortar with the blade edge or a wooden paddle while the mortar is still green.
• Rinse the blade under running water. If the mortar has already set, soak the blade to soften it and clear it with a plastic scraper or nylon brush.
• Do not use a wire brush, a steel brush wheel or an aggressive chemical cleaner: they scratch the blade face.
• Dry immediately with a clean cloth. Do not put the trowel away wet.
• Apply a thin film of oil (machine oil or ordinary rust-preventive oil) over the whole blade including the shank.

Carbon Steel Rust Prevention

This is a carbon steel blade and it will rust if it is left wet. Daily oiling keeps rust off; visible rust sets in when the tool sits in a damp place for more than a week without oil.

• Wipe the blade with an oily rag or apply a dedicated tool protector after every clean, and do it daily in damp conditions.
• Store dry: not in a closed toolbox with trapped moisture.
• For long-term storage, apply a heavier coat of oil and wrap the blade.
• Rust that has already formed can be removed with fine emery cloth worked along the blade, followed by a thorough rinse, dry and oil.

Regular Inspection

Handle Care

Soft grip (BF21, as supplied). Wipe clean with a damp cloth; do not soak. Inspect periodically for tears or damage to the grip.

Wood handles (Wb021 / Wb022 / Wb023). Keep dry between uses. Apply linseed or tung oil annually to prevent cracking and splintering. If the handle gets wet, let it dry naturally; do not apply direct heat.

Edge Maintenance

Over time the blade edge, particularly toward the tip, dulls from contact with brick faces and concrete. A dull edge takes more force to cut and spread mortar, which increases fatigue and reduces control.

• Use a fine diamond hone or whetstone and maintain the existing edge angle.
• Do not over-sharpen. A brick trowel works best with a slightly dulled edge, not a knife edge.
• Re-oil the blade after any abrasive work.