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Don't just take our word for it, hear what others have to say about J-strut:

These have made me so happy and I'm sure every builder out there will feel the same... It's the little things in life!

Sam Butler, Lincolnshire

These props are great, what they cost over and above a normal acro you will gain back in labour costs easily as they become a one man operation.

George Baines, Sedbergh

I can't empathise enough how easy it is to use compared to the standard acrow prop. Saves so much time as well. I can 100% recommend these to anyone thinking of purchasing some.

Dean Hargrave, Kent

You'll never want to touch an acrow again after using these. We've replaced all our props with J-struts, they're brilliant - much quicker and no more pinched fingers!

Oli Wildsmith, Herefordshire

They're miles better than normal acrows, makes life a lot easier, why did no one come up with this sooner!

Chris Corner, Bristol

Such a great bit of kit... Just being able to hold the J-strut in one hand and drive it with the other saves a load of struggling and an additional person.

Jon Taylor, Birmingham

J-strut Size 1

J-strut Size 1

J-strut Size 1 prop weighs 17.5kg and has a Safe Working Envelope between 19kN @ 3.10m (fully open) and 32kN @ 1.75m (fully closed).

End plates are 150mm square and compatible with all typical acrow prop accessories.

J-struts are manufactured to BS 4074:1982, tested to BS 5507-3:1982 finished with heavy duty yellow paint and a safety decal.

They are designed to work with all standard 1/2in impact wrenches fitted with a pinion (sold seperately)

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Further Information and Frequently Asked Questions:

USER GUIDE

LOAD CHART

  • Do J-struts have a similar height and load capacity compared to a normal acrow?

    The Size 1 J-strut follows the conventional sizing (established by Acrow Engineers nearly a century ago). Unlike typical alternatives, J-struts comprise a superior tube construction which means the Size 1 can safely support 32kN when fully closed (175cm) and 19kN when fully extended (310cm), provided that the prop is loaded concentrically and max 1.5 degrees out-of-plumb. The user guide, linked below, contains further guidance on the safe working envelope and standard operating procedures.

  • Is it possible to upgrade existing acrow props?

    Modifying existing props is inherently unsafe - there's simply too much variation in tube construction. Not only is it impossible to specify a safe load capacity, but a retrofitted component might seem to fit initially then later fail under load. Instead, we manufacture and assemble our props from scratch, ensuring that the final product has full traceability and meets rigorous safety standards. This means that J-struts are of the highest quality with exceptional functionality and well-defined load capacity.

  • Why choose J-struts when conventional props are usually cheaper?

    To deliver improved safety and performance, J-struts have a slightly higher upfront cost compared to typical props. However, it's essential to understand that this represents an investment in quality and traceability as much as improved safety and performance. Crafted from high-grade steel, J-struts are built to outlast and outperform conventional alternatives with precision-engineered components that are fully traceable and finished with a variety of high-spec protective coatings. On top of their superior construction, J-struts have three key the key operational advantages, they are:


    Quicker: Not only are they height adjustable in a matter of seconds, they can be positioned, adjusted and held plumb by 1 person, reducing in labour-hours by over 50%.


    Safer: J-struts eliminate risks and mitigate hazards that are inherent with typical acrows. Say goodbye to repetitive strain injuries, bruised knuckles, pinched fingers, and skin punctures from frayed wires.


    Easier: By applying a modern twist to a century-old method, J-struts enables effortless control and precise adjustment at the press of a trigger. 

  • How much added value do J-struts bring to construction projects?

    The award-winning telescopic steel props are typically used in temporary structural and formwork applications. They have proven to be highly effective in reducing time and labour costs on construction and renovation projects by reducing manual labour and improving resource efficiency on prop setup by approximately 50%. Assuming an average hourly wage of £20 for UK construction workers, this translates to a labour cost saving of £10 per hour worked. Considering the indirect benefits of reduced injury risk and improved morale, we estimate a conservative 20% overall increase in Gross Value Add (GVA) per hour worked.


    Before: Assuming the average GVA per hour worked in the UK construction industry is £40    


    After: Based on the estimated 20% increase in productivity  after switching to J-strut, the forecasted GVA per hour worked would be: £48 (current GVA of £40 * 1.20 i.e. 20% increase).


  • Where are J-struts available to purchase and can they be hired?

    We can supply J-struts to UK customers with next day delivery if ordered before 10am. They can also be purchased from other online retailers and builders merchants. We currently stock the most common prop size, Size 1, with other sizes available on backorder. 


    We have a network of hire partners dotted around the UK. If you would like to hire J-struts we recommend asking your local hire depot for stock availability. For other hire enquiries please contact us directly using the form below.


    For territories outside the UK, including North America, Europe and Australia please get in touch using the form below.

Contact us using the form below:


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01544388901
The Grove, Noke Lane, Pembridge, Leominster, Herefordshire,, HR6 9HP
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