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


Two Part Tie

The Two Part tie is a versatile cavity wall tie, exceeding the standards for a type 2 tie as outlined in PD 6697. This tie boasts a feature that impedes water from traversing a cavity, primarily due to its unique connection design.

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The Two Part Tie is a standard-duty cavity wall tie designed to surpass the specifications of a Type 2 Tie for up to a 300mm cavity, as per PD 6697: 2010. It delivers unmatched water resistance across the cavity due to its unique connection feature, ensuring no water seepage from the outer to the inner leaf, even when installed with an angle of up to 5° in an unfavourable direction. This tie is suitable for use in a minimum mortar joint thickness of 10mm.

Problem-Free Construction

Often, constructing cavity walls with a large clear cavity can present challenges when the inner and outer leaves are built independently. Problems such as block overturning due to tie weight and maintaining a horizontal level may occur. The Two Part Tie addresses these issues effectively. Its two-part design enables an independent inner section to be embedded into the block or internal leaf, leaving a short slotted connection exposed for the attachment of the outer sections, which are installed during the construction of the outer leaf.

Perfectly Sized

The inner sections of the Two Part Tie are available in standard lengths of either 170mm or 220mm to accommodate a maximum insulation board thickness of 70mm or 120mm respectively (alternative lengths are available upon request). An embedment of 62.5mm into the bed joint in both leaves is recommended. The outer sections are available in a range of lengths to suit cavities from 150 – 400mm.

Tie Density and Spacing

For walls with both leaves thicker than 90mm, the wall ties should typically be installed at a density of at least 2.5 ties/m². Grayson suggests spacing the ties at 900mm horizontal centres and 450mm vertical centres staggered at alternate courses up to a 300mm cavity. For larger cavities, a spacing of 600 x 450mm is recommended to maintain Type 2 load capacities.

Optimal Placement

Wall ties should be evenly distributed over a wall, except around openings or at an un-bonded panel edge, where the tie density should be increased to 225mm vertical centres within 225mm of the opening or edge.


The Two Part Tie demonstrates the best of standard-duty cavity wall tie design, offering outstanding performance and versatile application.

SizePart NumbersDescriptionQuantity
200TPT200Two Part Tie Kit Cavity Range as per sizesVarious
225TPT225Two Part Tie Kit Cavity Range as per sizesVarious
250TPT250Two Part Tie Kit Cavity Range as per sizesVarious
275TPT275Two Part Tie Kit Cavity Range as per sizesVarious
350TPT350Two Part Tie Kit Cavity Range as per sizesVarious
375TPT375Two Part Tie Kit Cavity Range as per sizesVarious
400TPT400Two Part Tie Kit Cavity Range as per sizesVarious
Size 200
Part Numbers TPT200
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 225
Part Numbers TPT225
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 250
Part Numbers TPT250
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 275
Part Numbers TPT275
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 350
Part Numbers TPT350
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 375
Part Numbers TPT375
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Size 400
Part Numbers TPT400
Description Two Part Tie Kit Cavity Range as per sizes
Quantity Various
Contact us to order: 08448 50 40 50

Contact Us


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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Andy Allsobrook

Regional Manager

Andy is not just our Regional Manager; he is a dedicated family man, an active sports enthusiast, and brings nearly 40 years of construction industry experience to the team.  

Away from the office, Andy still plays cricket at the grand age of 58, showing the young ones what he’s made of when playing on the same team as his son. He also avidly supports Arsenal FC.

Andy also cherishes family time with his childhood sweetheart, wife of 35 years, their three adult children, and grandchildren.

An ex-retained fireman who served for six years in the 1980s, Andy’s dedication extends beyond work, showcasing his commitment to community and family.

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.