The Thin-Joint System enables the inner leaf to be built quickly to storey height without having to wait for the external brickwork to be built before further loading can be applied.
It also provides the robustness of solid masonry and is flexible enough to accommodate bespoke or individual design.
H+H Celcon thin joint blockwork is a fast, accurate, clean method of construction which uses aerated concrete blocks and special mortar. It enables walls to be built very quickly: because the mortar sets very quickly (in one to two hours) there is no need to wait the conventional 24 hours before further loading can be applied to the walls. The H+H Celcon Storey Height Element Systems will be common-place in the UK in the coming years, to meet our housing demand.
MFS as part of your design team
We consider every project on its own merits and offer to take Design Responsibility for the whole of the Structural Envelope from oversite and more importantly provide you with a Design Warranty. That way we are able to rationalise our approach and provide the client with the comfort of a ‘tried and tested’ solution with a single point of responsibility.
- Composition: Aircrete blocks, made from recycled fuel ash from coal-fired power stations are lightweight, easy to work with and have a high resistance to fire, frost, water penetration and sulfate attack.
- Dimensions: The H+H Thin Joint Blocks are typically 620mm x 215mm x 100mm. The H+H Storey Height Elements are of similar composition and are manufactured to storey height requirements.
- Thickness: H+H Celcon blocks are manufactured in a range of widths. We tend to specify the 100mm wide for the inner leaf of cavity walls, also party walls and 190mm wide for solid wall construction.
- Cost: The H+H Celcon block and panel systems are comparable with traditional masonry solutions, however it is substantially quicker in delivering a complete structural envelope, in fact halving a ‘traditional’ build programme.
Offsite lead time: A typical lead time on the manufacture is approx. 6-8 weeks.
On site delivery time: We can typically complete a pair of semi-detached house in around 10 working days.
- Substantially quicker and more cost effective than traditional masonry.
- Conventional construction with added speed & efficiency benefits
- Excellent thermal and acoustic Performance and fire retardant properties
Able to meet Approved Document A3 Disproportionate Collapse Class 2A
- Reduced Waste and lower defects, either during the manufacturing process or on-site!
- Improved air-tightness
- A unique MMC solution which meets demands of today’s housing industry, with the resistance of Solid Masonry and PCC Concrete.
- MFS offer a Structural Design Solution and Warranty. Our early involvement in the design and planning can reduce costs and time on site.
We originally established the business to build the inner leaf of the superstructure from oversite right up to wall plate level and then pitch the roof structure, including the installation of the intermediate floors. However, as the building process becomes increasingly complex, we now find ourselves invariably undertaking the whole of the structural envelope, including the external leaf, managing and coordinating the scaffolding, installing any structural steelwork and PCC floor planks. We even supply the forklift and fit the soffit and fascia too.
Essentially, we can build a typical pair of semis from oversite to watertight in 10 working days; and depending on the scale of the project and the desired handover rate, we can complete a pair of units every five working days thereafter. After that, it is just a question of adjusting the resource levels.
Depending on the scale and level of complexity of your project, the average lead time would be in the order of six to eight weeks. However, to benefit fully from the system, we recommend that you get involved in the design process as early as possible in order to maximise the potential savings.
In a recent study undertaken by Calford Seaden, it was concluded that the thin joint blockwork solution at Code Level 3 was 8% cheaper than either the equivalent timber frame or SIPS panel solution. We would further argue that when adopted as part of an integrated design solution, at Code Level 4 the savings or benefits are even greater when you factor in the elimination or reduction in renewable technologies.
Thin joint blocks are manufactured in all of the standard aircrete block strengths 2.80 N/mm2 Solar, 3.60 N/mm2 Standard and 7.30 N/mm2 Hi Seven, together with a few 10.30 N/mm2 Hi Tens. The principal difference is the accuracy and format of blocks. We tend to specify the Jumbo Plus format, which is 610mm x 270mm and manufactured to high degree of accuracy +/- 1mm.
Yes, thin joint blockwork is recognised as a Modern Method of Construction and is widely adopted to meet both Code Level 3 and Code Level 4 of the CfSH (Code for Sustainable Homes). It can also be adopted for PassivHaus construction; in fact it makes an ideal structure because of its thermal mass properties.
Essentially, it is a masonry alternative to timber frame. It offers most if not all of the benefits of timber frame, with the added robustness of solid masonry. It also has the benefit of increasing the thermal mass, which is an important factor in PassivHaus construction and increasingly recognised as a significant factor in personal comfort.
Thin bed, or thin joint blockwork as it is commonly known, is a large format block system manufactured to a higher standard of accuracy than conventional aircrete blocks. It uses a specialist high strength adhesive laid to a 2mm thick bed.
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