H+H UK LTD
CELCON HOUSE
IGHTHAM
SEVENOAKS
KENT TN15 9HZ
Tel: 01732 886444
Fax: 01732 887013
Suppliers of: Celcon concrete blocks lightweight concrete blocks concrete thin joint system
H+H UK LTD manufacture a wide range of Concrete Blocks and lightweight Concrete Blocks to suite all types on Block Construction.
Useful Resources:
- BIM files available on BPi
- H+H Academy: Online training and resources Click here
H+H is the UK’s largest manufacturer of aircrete products. We manufacture the market leading range of Celcon Blocks, including Foundation Blocks, Plus Blocks and the H+H range of aircrete products.
H+H aircrete products offer a complete building material that meets the requirements of the Building Regulations, with the flexibility to offer solutions to hospitals, schools, offices, industrial warehouses and housing (social and private).
Used in partition, separating and external walls (solid or cavity), firewalls and as an infill to framed construction, our products provide durability and fire resistance as well as superb thermal and sound insulation.
Main Product Ranges:
Celcon Blocks
Celcon Blocks in Solar, Standard, High Strength and Super Strength Grades are the most commonly used aircrete block in the H+H range. All Celcon Blocks are BBA certified, are fire resistant (100mm walls, up to 4 hours, 2 hours if loadbearing) and have been classified 0 surface spread of flame and non-combustible to Class A1 (the highest class).
Celcon Block Solar Grade
Celcon Blocks Solar Grade is principally used where enhanced thermal performance is required. With superior thermal conductivity Solar Grade Celcon Blocks are suitably loadbearing for two storey buildings and can be used below DPC.
Celcon Block Standard Grade
Celcon Blocks Standard Grade is BBA certified and has a compressive strength of 3.6N/mm2. Due to its all round performance, it is possible for a 100mm Standard grade Celcon Block to be used throughout a build, eliminating on-site confusion.
Celcon Block High Strength & Super Strength Grade
H+H’s Celcon Blocks High Strength Grade (7.3N/mm2) and Super Strength Grade (8.7N/mm2) are used principally where higher compressive strengths are required such as in the foundations and lower storeys of three storey buildings, piers under high vertical loads and in multi-storey buildings.
Celcon Plus Blocks
Celcon Plus Blocks are an alternative to the 440 x 215mm face format block and are suitable for the same applications. They are longer at 630mm long and come in a variety of thicknesses.
Celcon Foundation Blocks
Available in Standard Grade (3.6N/mm²) and High Strength Grade (7.3N/mm²), Foundation Blocks can be used to support 3 storey constructions. They are suitable for the support of solid or cavity walls, framed construction or suspended floors, including beam and block.
Jumbo Bloks
Jumbo Bloks are produced with the latest technology, offering a high degree of dimensional accuracy with sharp arises, which make them ideal for use with Celfix mortar.
Celcon Block Coursing Units
Coursing Units are produced from the same material as all H+H aircrete and are suitable for the same applications as conventional size Celcon Blocks, allowing consistency within the building fabric.
Celfix Mortar
Celfix Mortar is cement based and supplied as a dry, pre-mixed powder in 25kg bags. It has been designed to replace the traditional sand:cement mortar and is used with building with our Thin-Joint System. Celfix Mortar starts to set within 10 minutes of application and approaches full design strength in just 1 to 2 hours.
H+H How Strong is aircrete?
H+H aircrete blocks are routinely tested for their compressive strength in our factories, using UKAS approved testing procedures.
It is no surprise to see that blocks manufactured today easily pass the compressive strength tests, but we thought it would be interesting to see just how long this strength lasts.
Our Pollington manufacturing plant was built of H+H aircrete blocks over forty years ago, so we took the opportunity to test some of the blocks that have been supporting the walls of the factory throughout that time.
And while we were there, we also tested blocks that had been used to build a wall left entirely exposed to the elements (not a practice we recommend).
And finally, we soaked one of our blocks for 24 hours in a tank of water and then tested it.
We were delighted (but not surprised) to see that all of the blocks easily passed the compressive strength test. The 45-year block was considerably stronger than it had been manufactured to be half a century ago – demonstrating that neither age nor bad treatment causes our blocks to lose their strength.
H+H manufactures a range of aircrete blocks with different characteristics. To check the thermal insulation and compressive strength of each product, go to the product section of the website.
Exquisite new Somerset homes built with H+H Celcon Vertical Wall Panels
When regional housebuilder, Galion Ltd was looking for a way to speed up the construction process without compromising on using traditional masonry materials for its Jarmany Hill site, it turned to H+H’s Celcon Vertical Wall Panels.
Celcon Vertical Wall Panels are storey-high panels of aircrete that are craned into place for a fast build with the reassuring characteristics of a high-performance, durable, masonry structure.
Galion Ltd is building five large, detached houses with uninterrupted views over the Somerset countryside towards Glastonbury Tor. With a reputation for building individual properties to a high specification, the quality of the build is a strong focus for the company.
Tim Barnes, Managing Director of Galion Ltd explains why H+H Vertical Wall Panels were chosen for the site: “One of the unique features of our houses is that we use local, natural stone walling for the external envelope of the properties. These are slow to build, especially when we’re using a traditional masonry build method as we are restricted to a maximum of six courses before laying the masonry to the same height.
“With the traditional method it was taking 8 to 12 weeks to get to the point where we could put the roof on a house. The joy of using H+H Vertical Wall Panels is that we can get the roof on in around 8 days – it’s a huge advantage for us.”
Constructing the watertight external shell of a house so quickly allows the internal trades to start work much earlier, reducing the build schedule significantly. When building large homes like the 2,800 square foot houses on the Jarmany Hill site, this time saving is particularly pertinent.
Galion Ltd is working with Acorn Innovation Build Ltd whose carpenters were trained by H+H to install the Vertical Wall Panels. It was a fairly straightforward transition for them as they already use a crane to install timber floor cassettes and roof joists.
Matt Shuttleworth, Director, Acorn Innovation Build commented: “H+H Celcon Vertical Wall Panels is a new system for us but as a company we are always interested in different methods of construction. I have to say, so far we are very impressed with this one.”
Tim Barnes is equally impressed, saying: “I’m struggling to see a downside to the system. Everyone who has seen it has been impressed and I think once other companies see contractors building with it they’ll wonder why they’re not using it too. We’re already planning to use the system at another site that will be breaking ground soon.”
The 3 four-bedroom and 2 five-bedroom Jarmany Hill family homes will be completed by July 2024.
