Screedemon SD4 Screed Drive Unit (Only)

Product Code

The ScreeDemon SD4......because not all portable wet screeds are designed the same/equal.

The ScreeDemon is a highly popular, highly portable, highly versatile,highly productive and easy to use walk behind (pedestrian) petrol levelling and vibrating screed device that professes to “vibrate like hell on the business end, yet has very low hand arm vibration at the operator position”.

The Screedemon can be used without the requirement to run off supporting form work, and is a lot less labour/time consuming than other methods of screeding/levelling freshly poured concrete slabs.

£1,416.00 £1,180.00
RRP £1,922.40
In stock
£1,416.00 £1,180.00
RRP £1,922.40


Engine Honda Petrol
Type 4-Stroke
HAV Recording (4-1/2" Slump - 12' Blade) 5.7m/s2
Operating Weight 13.2kg
Our Price (Exc.VAT) £1180.00

Product Information

Unlike many 'similar' screeds, the ScreeDemon has a 4-Stroke Honda petrol engine and a high frequency vibration system that provides uniform distribution over the entire beam length, enhancing compaction, whilst reducing vibration levels transmitted to the operator. The ScreeDemon does NOT have an extended drive assembly, unlike many competitors models, which is often susceptible/prone to damage and wear.

The ScreeDemon uses extra rigid, double triangular, magnesium screed beams that are quickly and easily interchangeable, and range from 1.80m/6ft to 4.88m/16ft in length, enabling the ScreeDemon to be used for a multitude of screeding applications. Magnesium beams are in used in preference to aluminium (as favoured by the majority of competitors) as it is lightweight, will not react with concrete like aluminium and is easy to clean.


The ScreeDemon was designed to overcome 4 identified, serious short comings of other types of portable wet screeds:


Conventional wet screeds are prone to high maintenance, especially in connection to drive mechanisms between the engine and the exciter. The ScreeDemon has NO flex or rigid shaft connection. a simple, durable, low cost rubber isolator drives the eccentric.


Most screed and screed bar combinations produce irregular vibration along the length of the screed bar. Not only is the concrete exposed to highly variable levels of vibration, but cream levels vary from spot to spot along the screed bar. The back-to-back triangular construction of the ScreeDemon bar is extremely rigid and minimizes variability in the transmission of vibration.

Most screeds bolt to their screed bars. Hardware threads are compromised by the concrete and assembling or removing the screed becomes such a problem that crews often don't disassemble for cleaning or transport.

The ScreeDemon simply clamps to the specially designed bar. No holes to weaken the screed bar. No threads to complicate assembly/disassembly. the ScreeDemon goes together and comes apart in seconds.

Operator Health & Safety

All other wet screeds tested exposed operators to excessive hand/arm vibration. The ScreeDemon patent pending mount retention method enables use of low durometer isolators without loss of operator control. Hand/arm vibration is 50 to 90% lower than competitive screeds.

• Trigger throttle which allows instant operator response to concrete conditions
• Sealed exciter with oversized bearings - requires no maintenance
• Central lifting point which is perfectly balanced with any length of beam