SQRVA6M PRO
6 m vibrating screed SQRVA6M PRO
Levels and vibrates the slab in one pass.
View details5-minute training
5 minHow to use the vibrating screed
Use a vibrating screed on freshly placed concrete: rest it on the screed rails or level references, start the vibration and pull it at a steady speed with a small roll of mix ahead of the blade. SIMAQ has the SQRVA1.2SET (Honda GX35, with 1.2 and 3 m blades) and the 6 m aluminum SQRVA6M PRO, for layers up to 200 mm. It levels and compacts the surface in one pass and leaves the slab ready for troweling.
Also called: vibrating screed, power screed
The vibrating screed works the surface: it levels the slab and compacts its top. If the slab is thicker than the spec sheet allows (200 mm on the SQRVA6M PRO) or heavily reinforced, vibrate first with an immersion vibrator and then run the screed.
- 01
Set the level
Set your screed rails or level references. The blade works against them; without a reference, the screed just copies the lows of the pour.
- 02
Pick the blade
SQRVA1.2SET: 1.2 m blade for corridors, edges and tight areas; 3 m for wider slabs. For big spans, the SQRVA6M PRO builds up to 6 m from 1, 2 and 3 m sections.
- 03
Start vibration and pull evenly
With the concrete spread, start the vibration and pull at a steady speed. Go too fast and lows are left uncompacted; stop and the vibration sinks the aggregate and marks the slab.
- 04
Keep a roll of concrete ahead
Keep a small roll of mix ahead of the blade so it fills the lows as you advance.
- 05
Second pass if needed
If lows remain, fill with a shovel and re-screed. Then floating and troweling take over, once the slab holds a 3–5 mm footprint.
Do this
- Pull at a steady speed; on the SQRVA6M PRO, 1.2 to 2.5 m per minute.
- If lows remain → fill with a shovel and re-screed, don't cover them with slurry.
- Clean the blade between pours.
- Coordinate with the crew feeding concrete.
Avoid this
- Don't over-vibrate one spot: you sink the aggregate.
- Don't run it without a level reference and expect flat.
- Don't add water to the mix so the screed 'runs': it weakens the surface.
- Don't leave it running, resting on concrete, without moving.
Safety
- Rubber boots, gloves and glasses.
- Straight-back posture when pulling; use your legs.
- Switch off vibration before lifting it.
Test yourself
Got it down?
Self-check
Each practice: do it or avoid it? Tap your answer.
Clean the blade between pours.
Coordinate with the crew feeding concrete.
Don't over-vibrate one spot: you sink the aggregate.
Don't run it without a level reference and expect flat.
Don't leave it running, resting on concrete, without moving.
Pull at a steady speed; on the SQRVA6M PRO, 1.2 to 2.5 m per minute.
Don't add water to the mix so the screed 'runs': it weakens the surface.
If lows remain → fill with a shovel and re-screed, don't cover them with slurry.
Equipment in this training
Apply it on these machines
Buying guides
Clear up your questions before you quote
Guide · 5 min
When and how do you cure concrete? Methods, days and mistakes
When to start curing, for how many days, with water, burlap, plastic or curing compound, and the mistakes that rob your slab or column of strength.
Read Guide · 6 minWhen should you cut concrete control joints, and how deep?
Cut as soon as the slab bears the saw (usually 6–18 h) and at ¼ of the thickness. A depth-by-thickness table, where joints go and how to wet-cut with the SQ16 PRO.
Read Guide · 7 minWhen do you run the power trowel on concrete, and what size do you need?
The exact moment to go in with the power trowel (the footprint test), pan first and blades after, and when a walk-behind or a ride-on double makes sense.
ReadFAQ
What people ask about the vibrating screed
What is a vibrating screed for?
To level and compact the surface of a fresh concrete slab or floor in a single pass. It replaces the hand straightedge and leaves a flatter, tighter surface.
Vibrating screed or immersion vibrator: which one?
Thin slab or floor → screed. Column, beam, wall or a thick, heavily reinforced slab → immersion vibrator, then the screed to level. The guide on screed vs. immersion vibrator explains it.
What screed length do I need?
The blade has to rest on both rails. The SQRVA1.2SET gives you 1.2 m and 3 m; the SQRVA6M PRO builds up to 6 m from 1, 2 and 3 m sections.
What's the most common screed mistake?
Running it without a level reference or stopping in one spot while vibrating. Without rails it copies the lows; stopped, it sinks the aggregate and leaves a mark.
How often does the screed need an oil change?
On the SQRVA6M PRO, the first engine-oil change is at 20 hours or one month, then every 100 hours or 6 months. Grease the vibration-shaft bearings every 100 hours.
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