Xella Silka calcium silicate large format masonry blocks construct slim walls that are both extremely stable and highly sound absorbent. Silka blocks are excellent at storing heat and great news, a Silka building fulfils all current requirements for environmental protection and economy of modern buildings.
The Silka blocks are very dense, a large-scale building material that consists solely of natural raw materials: lime, sand, and water.
Best described as an ‘adult version’ of our thin joint bed block system and our preferred system of construction. It has all of the same qualities as other thin joint blocks (which means our labour easily transfers) but it comes in an even larger format that is even quicker to install with a mini crane.
The key benefit of the Xella Silka Element System is the speed of construction. Fast, accurate and clean, this method of construction which uses large format blocks and special fast drying mortar. The mortar sets within 1-2 hours, so no need to wait for the conventional 24 hours before further loading can be applied to the walls.
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:The panels are manufactured from Calcium Silicate and achieve strengths in excess of 25 N/mm2, making it a perfect solution for medium to high-rise projects. Fully weight bearing up to 10 storeys.
Dimensions: The standard Silka elements are 900mm x 650mm and can weigh up to 214kg depending on the thickness. Requires mechanical installation.
- Thickness: Silka blocks are manufactured in a range of sizes. We tend to specify the 150mm wide for external walls and the 214mm width for party and separating walls.
- Cost: The Xella Silka block cost is comparable with our Thin Joint blockwork system, however 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 lead time: We can typically complete a single storey in around 10-15 working days.
- Substantially quicker and more cost effective than a conventional Reinforced Concrete frame and infill, with a ‘hybrid’ masonry / concrete frame solution
- Conventional construction with added speed & efficiency benefits
Excellent Acoustic Performance and Fire retardant properties
Able to meet Approved Document A3 Disproportionate Collapse Class 2A and 2B
- Zero Waste, either during the manufacturing process or on-site!
- A unique solution which meets demands of the modern construction 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.
That is difficult to answer as we take every project on its merits; but essentially, we can turn a typical storey around in approximately 10 —15 working days depending on the scale of the project. Beyond that it is just a question of adjusting the resource levels to sequence and balance the programme.
Depending on the scale and level of complexity of your project, the lead time on the manufacture is in the order of 6 – 8 weeks. However, to take most advantage of the benefits of the system, we would recommend as early involvement in the design process as can be afforded that way the greater the impact we are likely to have.
Yes, the net result is that we now 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.
This has probably been our biggest single hurdle to overcome as it relevant from 4 stories +. So after much debate, we have engaged our own Structural Engineer to design a range of solutions that could be relatively simple when adopted to given situations.
Providing we address the Disproportionate Collapse, we can take the system up to 10—12 storey’s high.
A formal ‘Cost Comparison’, will depend on its application. In a recent exercise that we undertook in the office on a 3 storey structure it was no worse than cost neutral compared with our Thin Joint blockwork system but more significantly, it was substantially quicker in fact halving a ‘traditional’ build programme. Yes, on a recent scheme we were able to reduce the build programme for the Structural Envelope from 34 weeks to 16 weeks!!! But it is in ‘medium’ to ‘high’ rise where we see it will be of most value. We are totally convinced that this will re-define the way apartments / flats / student accommodation / and care homes are constructed.
They are manufactured in a range of sizes to meet all different demands. We see the 150mm wide for external walls and the 214mm width for party and separating walls being the most common that we will specify and are confident these will satisfy a range of applications.
The standard elements are 1000mm x 650mm and can weigh up to 240kg depending on the thickness hence the need for mechanical installation.
Essentially the panels are manufactured from Calcium Silicate as opposed to Aircrete for our current ‘day to day’ Thin joint and achieves strengths in excess of 25 N/mm2 . This enables us to put an entirely different perspective on it and makes it appropriate for Medium to High rise where our standard 3.60 and 7.30 N/mm2 blockwork can’t cope.
Well, I best describe this as an ‘adult version’ of our Thin Bed block system. It has all of the same qualities which means our labour can easily transfer but it comes in an even larger format that has to be installed with a mini crane.
- H+H Celcon Foundation Blocks
- Ytong Foundation Blocks
- Beam and block floors
- Structural steel frames
- Loose steels
- Face brickwork
- Cavity wall insulation
- External render systems
- Thin Joint blockwork
- Party wall insulation
- Precast concrete floor planks
- H+H Celcon ‘Jamara’ Floor Slab System
- Timber floors
- Eco joist floors
- “I” Joists
- Precast concrete stairs & landings
- Cantilever balconies
- Roof trusses
- Cut & pitch roofs
- Flat roofs
- Spandrel & Gable Panels
- Design Warranty
- £5 miliion PI Insurance
- Inhouse Consultant Structural Engineer
- Design co-ordination
A single Silka large format block is the equivalent to 60 x traditional bricks.
Less waste on site with Xella Silka construction, typically only uses 4 skips.
6 minutes to lay 1 Silka block. The same volume in bricks takes approx 1 hour.
Thin joint mortar can be laid at up to -3 degrees, minimising construction delays in the colder months.
Thin joint mortar is fully load bearing in 24hours, whereas traditional brick mortar can take up to 28 days before it is completely structurally sound
Thin joint mortar uses much less than a litre of water per square metre. A massive saving in water consumption compared to traditional mortar, which uses 16 litres.
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We’d love to discuss your construction project with you, please get in touch with us.