Contact us to order: 08448 50 40 50
Contact us to order: 08448 50 40 50


SR 100

These head restraints play a critical role in stabilizing internal or cavity wall assemblies by securely clamping two angles around the blockwork at their tops. Once affixed, they are bolted to the underside of the supporting structure, offering robust lateral support that enhances the overall structural integrity. Specifically tailored for 100mm blocks, these restraints boast a remarkable capacity to withstand horizontal loads of up to 1.0kN, ensuring the walls remain steadfast and resilient against external pressures, while allowing for natural movement at the junction between the wall and the supporting structure.

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  • Enhanced Structural Stability: The SR 100 Head Restraints play a crucial role in enhancing the structural stability of internal walls or cavity wall leaves. By restraining the head of these walls, they prevent lateral movement and ensure that the structure remains sturdy and secure, even under varying loads or external forces.
  • Ease of Installation: One of the key advantages of the SR 100 is its straightforward installation process. The restraints consist of two angles that clamp together over the top of the wall’s block. Once positioned, they are securely bolted to the underside of the structure. This simplicity in installation not only saves time but also reduces the complexity of the construction process.
  • Versatility in Application: Designed to clamp around a 100mm block, the SR 100 Head Restraints offer versatility in application. Whether used in the construction of internal walls or cavity walls, they provide a reliable solution for restraining the upper portion of the wall, ensuring uniform support across various wall configurations.
  • Customized Support: The SR 100 is engineered to accommodate a maximum horizontal line load of 1.0kN. This robust load-bearing capacity allows the restraints to effectively withstand horizontal forces, such as wind pressure or seismic activity, thereby safeguarding the structural integrity of the entire building.
  • Long-term Reliability: Built to withstand the rigors of construction and the demands of ongoing use, the SR 100 Head Restraints offer long-term reliability. Their durable construction and high-quality materials ensure that they provide consistent support and restraint over the lifespan of the structure, contributing to its overall safety and longevity.


In summary, the SR 100 Head Restraints offer a comprehensive range of benefits, including enhanced structural stability, ease of installation, versatility in application, customized support for varying loads, and long-term reliability. As an integral component in the construction of internal walls or cavity walls, they play a crucial role in ensuring the safety and integrity of the built environment.

SizePart NumbersDescriptionQuantity
To Suit 100-140mmSR100/140SR100/140 Soffit Restraint To Suit 100-140mm. Stainless Steel Grade 30450
Size To Suit 100-140mm
Part Numbers SR100/140
Description SR100/140 Soffit Restraint To Suit 100-140mm. Stainless Steel Grade 304
Quantity 50
Contact us to order: 08448 50 40 50

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Unit 6 Edgar Ind Estate, Comber Road, Carryduff, Northern Ireland
02890 81 55 66


Unit 3 Invergyle Court, Ibrox Business Park, Glasgow
G51 2JR
0141 465 19 00


Magna 34 Industrial Park, Temple Road, Rotherham
S60 1FG
01709 786 100


Lombard House, 8 Lombard Road, London
SW19 3TZ
020 3576 3910

Grayson London is solely a Technical and Specification location.

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Katie Wills

Regional Manager

Meet Katie Wills, our vibrant Regional Manager who finds joy in spending time with her family, keeping fit, and taking part in fun-filled challenges.

With an energetic and outgoing personality, Katie thrives on trying new things, even venturing into coasteering in 2023 with her son.

She’s not afraid to push boundaries, whether climbing mountains (previously done Kilimanjaro) for charity or conquering marathons and skydives. I wonder what challenge is next on the list?

When not on an adventure, Katie cherishes time with loved ones, embodying a sociable spirit that brings warmth to our team. 

Madelaine Pieterse

Regional Manager

Madelaine has always worked in construction so she knows her way around the industry, but she will often get lost in her own town.

Born in South Africa, Madelaine swapped the stunning sunshine in Cape Town for the cloudy charm of Belfast. We’re not sure what made her make this decision, starting a new life in Ireland isn’t for the faint-hearted.

Madelaine is mother to two sons 22 and 25 who she loves to spend her time with, watching them mature into handsome men.

Grayson GB - Jim Martin

Jim Martin

Regional Manager

Our regional manager Jim likes to pretend that he is ‘pure Scottish’ but secretly he’s half English. Now, we ‘dinnae ken’ why he’s proud of his Scottish ancestry, but each to their own!

Despite his Scottish routes, Jim is great at his job, there’s no denying that.

You won’t often see Jim cracking up in the office, but we suppose there isn’t a lot to laugh at up in Scotland so he’s probably out of practice.

Helen Gibson

Regional Manager

Helen spends most of her time playing with her orchestra. She claims that her biggest passion is music, but then again, her instrument of choice is the flute.

Playing her flute isn’t the only music that Helen makes, she is the proud owner of a big laugh that bounces off every corner of the office. More often than not, you will hear her laugh before you see her!

Helen’s a single girl, and enjoys meeting up with friends for nights out at the cinema, eating out and keeping the local Brew Dog in business!! She says she doesn’t drink much…. we know different!

Kevin Jagg

Operations Director

Kevin has been in the construction game for a long time, over 30 years! He worked at Grayson & Co back in 1993 and has unfortunately known Tony throughout this time. Now he’s decided to join the senior leadership after knowing Clare and Chris for 18 years.

At the weekend, Kevin enjoys meeting friends for a beer or 3 and loves to travel all over the world on cruises.

Clare Spivey

Sales & Marketing Director

Although she won’t admit it, Clare has been in the game a long time.

Supplying power tools and fixings was her first job in the construction industry. Due to this she has the ability to spot a tool a mile off.

Clare must have been a magician in a former life as her ability to spin plates is quite something. With a husband who works away, 2 kids with a shed load of activities, her taxi and cheerleading skills are on hand most evenings and weekends.

Clare and her family enjoy escaping to Filey, where they enjoy long walks on the beach and eating fish and chips. Clare loves her holiday home as there is absolutely no phone signal.

Henry Bareham

Specification Director

Henry’s takes great pride in his family, a wife to whom he’s absurdly lucky to have been married to for over 30 years. And two children in their 20’s, who now talk to him having managed their way through the teenage years.

Having left his pretend job of 15 years as a fully-fledged P.G.A qualified Golf Professional, Henry has managed his last 20 years + in construction within manufacturing, technical specification, and sub-contracting.

He spends his time away from work trying to re-kindle the talent he had a long time ago on the golf course, whilst also managing a keen interest in the gym, trying to maintain the muscle to body fat ratio in a good way.

Chris Bentley

Regional Manager

Chris’s claim to fame is working with both Tony and Clare for over 24 years, and still being alive to tell the tale. He’s been working for Grayson since day one!

Outside of the office, Chris has a passion for music and plays in a Brass Band. He’s performed at the Albert Hall, and recently performed at Soccer Aid for Unicef in front of 70,000 supporters at Old Trafford.

If he’s not playing music or working, Chris does also like to watch Barnsley FC which unfortunately, doesn’t put a smile on his face too often.

Tony Higson ​

CEO & Managing Director ​

Having two teenage daughters, Tony enjoys spending much of this time working away.

He also has an old wife and new a Doberman, therefore the only time people value him is in the office or on site.

As a Sheffield Wednesday fan, the poor fella doesn’t get any joy there either.

Tony has been the Managing Director of Grayson for nearly twenty-years. For all of this time he was also moonlighting for ACS. Again, holding down two jobs was the perfect excuse for not going home.  

In a previous life Tony used to play solders, however he has very few war stories due to the fact his job was to the fix equipment real soldiers used.

Tony’s biggest fear is retirement.