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.
Luxury housebuilder chose H+H aircrete for riverside development
The Riverdale Park development is currently under construction in Doncaster, bringing 139 new houses to the banks of the River Don. Led by Harron Homes, a construction company building luxury homes across the North Midlands and Yorkshire, the project is expected to be completed over the next four years.
Built on an old Polypipe factory site, the development is in what used to be a more industrial part of Doncaster. The area is now transforming, with retail spaces and other housing developments popping up in close proximity to the river.
Beginning construction last year, the project comprises two-storey homes, ranging from three to five bedrooms, completed with classic brick facades and tiled roofs.
Mark Sykes, buyer at Harron Homes, specified H+H Celcon Plus Blocks to build the inner leaf of the cavity walls in the new homes. After first using Celcon Blocks seven years ago to meet increasingly stringent thermal regulations, Harron Homes has continued to build with the material for the many benefits it brings to the company’s developments.
Mark commented: “Using aircrete is among the best, if not the very best, solutions for meeting building regulations. We switched to aircrete from medium dense concrete several years ago to achieve the increased thermal efficiency needed to comply with the updated Part L regulations.
“Since then, H+H aircrete has become a constant for us. Even when the Future Homes Standard comes into effect, we will continue to use Celcon Blocks as they have excellent thermal values which will enable us to meet the new standard.”
The larger size and lightweight nature of Celcon Plus Blocks means that walls can be constructed much faster than when using standard size blocks. Mark explained that this increased speed of build is a major benefit for Harron Homes, estimating that the company saves around 30% of wall building time. This helps Harron Homes to deliver projects on time and on budget.
Harron Homes also specified Celcon High Strength Grade Blocks for the Riverdale Park homes. These blocks have a higher compressive strength and so can bear greater loads. They were chosen to support steel beams in a standout feature of the homes, a large opening from the kitchen to a sunroom overlooking the garden.
Mark commented on the positive experience he’s had working with H+H, saying:
“I’ve always found H+H very easy to work with. Even when the industry was having issues coming out of the Covid pandemic and there were lots of material shortages, we were in constant contact with H+H. Despite the tough times, it was easy to speak to them, and most importantly all our deliveries were made to schedule. Communication with H+H is great, and always has been.”
Dorset housebuilder employs H+H Vertical Wall Panels for fast build
Karm Homes, a regional housebuilder specialising in affordable housing in Dorset and Hampshire, is currently developing two chalet bungalows in Charlton Marshall, near Blandford Forum. These rural three-bedroom homes will benefit from picturesque views of the surrounding countryside and are due to be finished by early summer.
Karm Homes has chosen to build these homes using the i-House system to speed up the build programme without compromising on quality. This Modern Method of Construction (MMC) was designed by H+H in collaboration with Roofspace Solutions to meet the increasing demand for speed of delivery within the housebuilding industry.
The i-House system combines H+H Vertical Wall Panels (VWPs) with prefabricated floors and roofs, offering the complete watertight shell of a standard house design in just one week.
Vertical Wall Panels are storey-high panels of aircrete that are fabricated offsite and craned onto standard foundations. They are secured with fast-setting strong mortar, creating a 2mm airtight joint for a high-quality, time-efficient build with little site wastage.
The panels offer all the benefits of aircrete which is highly thermally efficient: Vertical Wall Panels achieve a U-value of 0.17 W/m²K, meeting Passivhaus standards. Aircrete is also fire, moisture, and mould resistant and has a lifespan of over a hundred years, enabling the construction of durable, comfortable homes.
Martin Keenes, Director of Karm Homes, is an advocate of the i-House solution, and feels the system is ideal for smaller housebuilders developing niche sites. He likes the convenience of working with one company that sources all the materials for the building envelope and assembles it on site. He also appreciates having complete design flexibility and where possible designs the floorplate of each home around the 600mm width of the Vertical Wall Panels to reduce cuts, wastage, and time.
Martin comments: “We have looked at other MMC systems, such as SIPs, but found them to be more expensive than the i-House masonry solution plus increased fire risk and insurance premiums associated with a timber build. We also prefer building with masonry as our customers expect the durability that comes with a masonry home.”
Karm Homes has not been afraid to seek out innovative housebuilding solutions and Martin finds it surprising that the H+H Vertical Wall Panels are not more widely used, commenting:
“We use local architects to design our houses. When we suggest H+H Vertical Wall Panels to them, they’re sometimes unaware of the option. However, once they’ve seen the system in action, they’re completely converted. We can’t understand why more companies are not using this solution.”
Tel: +44 (0)1732 886333 Email: info@hhcelcon.co.uk
