Software for the yard running mortar mixers.

A mortar mixer is the unit a rental yard turns over for the masonry trade more than almost anything else made for mud. A block crew runs one all day at the foot of a wall; a finish crew batches stucco and parge for a morning. Unlike a tumbling concrete drum, a mortar mixer holds the drum fixed and spins a horizontal paddle shaft through it, with rubber wipers scraping the wall so nothing sets in the corners — built for mortar, grout, and plaster, not aggregate. What makes these units hard to run as a fleet is the churn and the cleanup, not the mechanics. The same small machine goes out and comes back constantly, often dropped at the gate, and too many come back with hardened grout baked into the drum and the wipers torn off. EquipFlow handles mortar mixers the way the yard that built it handles fast-turning rental iron: dispatch, billing, maintenance, and return inspection on one record per unit.

Built inside Rental King, right now.

Rental King is a heavy-equipment rental yard in Odessa and Midland, TX. They run mortar mixers, manlifts, forklifts, light towers, generators, compressors, and water trucks on MSA contracts through the Permian Basin — 24/7, oilfield pace. EquipFlow was designed and first deployed inside that yard. Every feature was tested against their live operation before it shipped. The product runs there today.

Mortar mixers are low-dollar, high-volume units, and the money on them leaks in two places: at the gate and in the wash bay. A mixer returned caked with hardened grout costs the yard labor to chip out and shortens the life of the paddles, the rubber wipers, and the drive — and if the buildup is not documented at return, the cleaning charge never lands and the yard eats it. Because these units turn so fast and so many pass through in a masonry week, no counter hand can hold the rate, the cleaning policy, and the cleanup queue in their head. When dispatch, billing, maintenance, and inspection all read from one unit record, the counter quotes the right rate, the inspection photo backs the cleaning charge, and the mechanic knows which scaled-up drums need a chip-out and a fresh set of wipers before they go out again. That single-record discipline is what keeps a high-churn mortar-mixer fleet profitable instead of break-even.

Mortar Mixer specs the rental record tracks.

Every number below is a sourced specification range. The render layer is the only path these values reach the page — they live on the unit record, not in a dispatcher's head.

Drum (mixing) capacity

6-10ft3

Batch capacity (mortar bags)

1.5-3.5bags

Gas engine output

5.5-8hp

Operating weight

690-838lb

Paddle-shaft mixing speed

40-55rpm

Charging (loading) height

56-57.5in

How EquipFlow handles mortar mixers on the dispatch board.

Mortar mixers turn fast and bunch around masonry work, so the dispatch board treats them as high-churn line items moving through the gate rather than parked yard assets. A dispatcher can see which units are out, which are loaded for a morning drop, and which are due back, on the same responsive screen at any hour. The trap with a paddle mixer is the trailer setup on towable units: a unit sent without the ball-mount, working lights, or a road-legal spare puts a mason on the shoulder, so the dispatcher confirms the hitch class and tow gear on the rental record before the truck leaves. Because one block job can pull more than one mixer and a busy masonry week can clean out the class, the board surfaces a class conflict at the point of assignment rather than at the gate, so the counter never promises a unit already spoken for.

Billing mortar mixers — MSA, standby, and site-level tax.

Mortar mixers run high-churn and short-duration, so the daily and weekly rate matters far more than long-term hour billing. The rate override lives on the customer record per equipment class, so a masonry contractor on a master service agreement gets its negotiated mixer rate applied automatically the moment a rental is created, with no rate sheet for the counter to carry in their head. Delivery and pickup charges ride the same invoice as the unit. The line that earns its keep on a paddle mixer is the cleaning charge: a drum and paddle set returned with hardened mortar baked on becomes a documented charge backed by the return-inspection photos, posted to the same invoice rather than argued at the counter. Tax jurisdiction is set on the delivery-site record, so a unit dropped across a county line still carries the right rate for where it worked. Invoices post to QuickBooks Online on close.

Maintenance on mortar mixers.

Mortar mixer PM is hour-meter driven where the unit carries a meter and time-on-rent driven where it does not, and the maintenance module advances the service clock from whatever the return inspection records, so a mixer that batched hard all week on a wall comes due on real use rather than on the calendar. The paddle shaft and the rubber drum wipers are the heart of this machine and the first thing hardened mortar attacks: caked grout binds the paddles, tears the wipers off the shaft, and loads the gearbox and drive belt, so PM leans on paddle and wiper condition and the shaft seals alongside the belt, the pull-start, and the small gas engine. The seal at the drum end is its own watch item, because grout that works past it ruins the bearing. A unit that comes back fully scaled gets pulled for a chip-out before it goes out again. Work orders, parts, and meter or time history live on the unit record, which is also where a cleaning or repair charge from a return inspection becomes a ticket the mechanic can act on.

Mortar Mixer return inspections.

The return inspection is the yard's control on a mortar mixer, and it is where the money is. Before a unit comes off rent, the driver or counter hand runs a mobile-web checklist on a phone — no app install — records the meter or time reading, and attaches required photos that cannot be skipped. The paddle-mixer checks are where most disputes live: the inside of the drum, the paddles, and the rubber wipers for hardened buildup, the dump lever and tilt lock, the belt and drive guard, and on a towable unit the tires, lights, and hitch. Mortar hides damage, so the wipers and paddle tips have to be cleared to see real wear. The photo of a caked drum with chewed wipers is what turns a cleaning fee from an argument into a line item. Tying the inspection to the rental record before the unit is accepted back means a customer cannot drop a scaled-up mixer at the gate after hours and leave the cleanup to the yard with nothing on file.

Common mortar mixer classes in the field.

The product, the same way it runs for mortar mixers.

The sections below are the EquipFlow modules that matter most when running mortar mixers — each links to the full feature detail.

Operator guides for running mortar mixers.

Field-tested playbooks that go deeper on pricing, dispatch, billing, and maintenance for fleets like this.

• Concrete Equipment Rental Operations →
• Adding a New Equipment Category to Your Yard →
• Aerial Lift Inspection Requirements →
• Air Quality Equipment Rentals →

What you give up running mortar mixers in EquipFlow.

EquipFlow is a web app, so the return inspection needs a signal to load. For a mortar mixer that mostly matters at the counter, where coverage is rarely an issue, but a unit dropped at the gate after hours still needs someone to run the inspection before it is accepted back — the system enforces the photo, it does not staff the gate. There is no built-in telematics on a small gas paddle mixer, so usage is captured at return rather than streamed. And the billing logic is built around the rate-override-and-cleaning-charge model a yard actually runs on; a yard with an unusual deposit or flat-clean-fee structure should bring it to the demo so it can be scoped honestly rather than forced.