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


Zedex Non-Combustible Damp Proof Course

The DPC is a flexible 0.6mm composite damp proof course and cavity tray system. The DPC is coloured red on the upper surface and pale grey on the reverse and is installed with the red surface facing upwards or outwards i.e. facing towards the direction of moisture penetration.

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  • Achieves a reaction to fire classification A2 – s1, d0 to BS EN 13501-1:2018 by Warrington Fire – compliant with UK Building Regulations
  • Flexible cavity tray system – lightweight, easy to detail and install on site
  • Excellent strength and tear resistance – robust and resistant to on-site damage
  • Non-Combustible Preformed Units available – simplifies complex or awkward detailing
  • Range of system components – Non-Combustible Fixing Strip and DPC Joint Supports available


It is supplied in 20m length rolls and the following standard widths: 300mm, 450mm, 500mm, 600mm, 700mm, 800mm and 900mm. Other widths are available on request including 100mm and 150mm.

SizePart NumbersDescriptionQuantity
100mm x 20mDPCVNC0100X20Visqueen Non-Combustible Zedex DPC 100mm x 20m1
150mm x 20mDPCVNC0150X20Visqueen Non-Combustible Zedex DPC 150mm x 20m1
225mm x 20mDPCVNC0225X20Visqueen Non-Combustible Zedex DPC 225mm x 20m1
300mm x 20mDPCVNC0300X20Visqueen Non-Combustible Zedex DPC 300mm x 20m1
450mm x 20mDPCVNC0450X20Visqueen Non-Combustible Zedex DPC 450mm x 20m1
500mm x 20mDPCVNC0500X20Visqueen Non-Combustible Zedex DPC 500mm x 20m1
600mm x 20mDPCVNC0600X20Visqueen Non-Combustible Zedex DPC 600mm x 20m1
700mm x 20mDPCVNC0700X20Visqueen Non-Combustible Zedex DPC 700mm x 20m1
800mm x 20mDPCVNC0800X20Visqueen Non-Combustible Zedex DPC 800mm x 20m1
900mm x 20mDPCVNC0900X20Visqueen Non-Combustible Zedex DPC 900mm x 20m1
1000mm x 20mDPCVNC1000X20Visqueen Non-Combustible Zedex DPC 1000mm x 20m1
Size 100mm x 20m
Part Numbers DPCVNC0100X20
Description Visqueen Non-Combustible Zedex DPC 100mm x 20m
Quantity 1
Size 150mm x 20m
Part Numbers DPCVNC0150X20
Description Visqueen Non-Combustible Zedex DPC 150mm x 20m
Quantity 1
Size 225mm x 20m
Part Numbers DPCVNC0225X20
Description Visqueen Non-Combustible Zedex DPC 225mm x 20m
Quantity 1
Size 300mm x 20m
Part Numbers DPCVNC0300X20
Description Visqueen Non-Combustible Zedex DPC 300mm x 20m
Quantity 1
Size 450mm x 20m
Part Numbers DPCVNC0450X20
Description Visqueen Non-Combustible Zedex DPC 450mm x 20m
Quantity 1
Size 500mm x 20m
Part Numbers DPCVNC0500X20
Description Visqueen Non-Combustible Zedex DPC 500mm x 20m
Quantity 1
Size 600mm x 20m
Part Numbers DPCVNC0600X20
Description Visqueen Non-Combustible Zedex DPC 600mm x 20m
Quantity 1
Size 700mm x 20m
Part Numbers DPCVNC0700X20
Description Visqueen Non-Combustible Zedex DPC 700mm x 20m
Quantity 1
Size 800mm x 20m
Part Numbers DPCVNC0800X20
Description Visqueen Non-Combustible Zedex DPC 800mm x 20m
Quantity 1
Size 900mm x 20m
Part Numbers DPCVNC0900X20
Description Visqueen Non-Combustible Zedex DPC 900mm x 20m
Quantity 1
Size 1000mm x 20m
Part Numbers DPCVNC1000X20
Description Visqueen Non-Combustible Zedex DPC 1000mm x 20m
Quantity 1
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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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.