Back Bolt Type Stone Curtain Wall System
Back Bolt Type Specifications
With practice many years and hundreds in projects of Back Bolt System Installation. EML believes that we can design and manufacture what you want.
Natural stones are diverse and irregular. Each of which has its own characteristics and optimum size.
EML will achieve the effect you want. Providing a safe, artistic façade; dry hanging solution proposal and budget friendly.
Aluminum Alloy (Back Bolt Systems)
Aluminum is most commonly alloyed with copper, zinc, magnesium, silicon, manganese and lithium. Small additions of chromium, titanium, zirconium, lead, bismuth and nickel are also made and iron is invariably present in small quantities.
The structure will be tied to the support in order to absorb thermal expansion/shrinkage and subsidence of the support itself so that the external covering is not affected by any possible future induced stress.
The safety of the system must be guaranteed via a subsequent check for every single project; in accordance with the norms relating to wind pressure/depression.
Specific Description of Back Bolt System
The rising profiles will be successively fixed in place with the horizontal profiles drilled and shaped so that the stresses due to the action of the wind doesn't stress the clips.
Back Bolt System provides forward facing slabs. Which consist of a mechanical machining performed on the back of the slab and the successive insertion of steel clips.
This preparation has been specifically designed for anchoring clips that will then be hooked to the horizontal profile.
Back Bolt Stone Curtain Advantages
Ease of installation
Compared with the traditional facade installation, dry hanging can avoid the procedure of grouting process. It can also shorten the construction period and save costs.
Unaltered technical and aesthetic performances
Without using cement and glue, the colors of the slabs remain unaltered over time and the surfaces do not absorb pollution.
Water resistance
Ventilated facade prevents rain and ice from entering the wall. It can avoid the stones from falling off, and reduce maintenance costs.
Eco-friendly and resource-saving
The contact area between the stone panel and wall is empty. Therefore, it can effectively prevent the conduction of temperature, saving energy.
Safety performance
Each piece of stone has four back bolts. All of them can withstand the weight of stone and the contact area between the keel hanging pieces is large. Therefore, the whole system of stone panel is safer than standard facade.
Ease of repair
If the stone ruptured, it is not easy to fall off because the back bolt can withstand the weight of stone and easily be replaced.
Back Bolt Dry Hanging Installation Process
Step 1
The preparation of the slab, insert the dowel into the staple, and tightening the screw the slab is this ready to be positioned
Step 2
After drawing the positioning of the elements according to the project on the facade, the stirrups and the fixing of the stirrups are carried out by mechanical or chemical dowels
Step 3
We fixed the insulating material by nylon plugs because of 3/4 per m2
Step 4
At this point the vertical uprights collapse and then align and level them.
Step 5
After making the holes fit the rivets and hangs all together. The rivets must be inserted according to the project indications, that is to say that they create "fixed points" or "moving points".
Step 6
Now it is possible to fix the horizontal profiles drilled at the appropriate levels (see "slab preparation")
Step 7
The slab must be "hooked" by hitching the clips to the horizontal profile.
Step 8
Finally, adjust the screws on the adjustment staples so that the correctly sized horizontal joints are obtained.
Step 9
Back Bolt System FAQs
How do you fix stone cladding to a facade with a back bolt system?
With a back bolt system, the back of each stone slab is machined and fitted with steel clips, which hook onto horizontal aluminium profiles fixed to vertical uprights on the wall. No cement or glue is used, and the structure is checked for every project against the local wind pressure requirements.
What are the advantages of a back bolt stone facade?
A back bolt facade skips the grouting stage, so installation is faster and cheaper than a traditional facade. The ventilated cavity keeps rain and ice out of the wall and saves energy, the slab colours stay unaltered without cement or glue, and each panel is held by four back bolts for safety.
Can a damaged stone panel be replaced on a back bolt facade?
Yes. If a slab cracks, the back bolts keep carrying its weight, so it is unlikely to fall, and the single panel can be taken off and replaced without disturbing the rest of the facade. EML offers free consultancy to design the right back bolt system for your project.