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Contractors Area

sifonika area contratacion



We are at your disposal to advise you regarding the best choice of design for the rainfall intensity parameters chosen by the designer responsible. To the extent that we are involved, we will try to anticipate potential conflicts with structural elements as manhole as other facilities. Sifonika uses an optimised calculation software to develop hydraulic calculation of all its systems.


The use of PVC-U requires a specific installation technique: cold welding. This kind of welding allows an onsite prefabrication, ideal for work at heights. In addition to the effort to find the best solutions in the design stage, in Sifonika we support onsite prefabrication given the flexibility it provides opposite the operative rigidity of external prefabrication on accepted planes.


All our installers are highly experienced in siphonic installations and they frequently take part in continuous training and Safety and Health at the site courses.


Thus, they are a perfect contact point for day-to-day coordination of the work. Above the installation it is the figure of the Project Manager or Building Site Manager, which is responsible for matters relating to the planning of work and customer satisfaction in everything required for the successful completion of the project.


In Sifonika want to be flexible and adapt our offer to the needs (and possibilities) of our client. We therefore propose two methods for you to choose the one that best suits you, whether your building is in Spain or in the case of a project beyond our borders.



If what you need is a full service which also includes the installation of the system we propose the "turnkey" service in which Sifonika is responsible for all phases up to the system reception in site. Therefore it includes consulting, design, calculations, installation aids, coordination and site management (Project Management) and guarantees. We have our own installers and a regional network of specialist installers approved to ensure the highest quality and closeness in all our services. Send us your siphonic project and we will respond quickly guaranteeing you our best price with installation included. We just need project measurements or, better, the floor plans of the roof sections and the location of the manholes along with the preference for location of downpipes.


sifonika area contratacion 2Contrary to the belief that has been driven by the siphonic industry itself in the past, the installation of a system of this type can be a relatively easy process which a properly qualified installer can carry out. Indeed, it is precisely the technical and design element, more complex, which requires a know-how and special skills to optimise each solution so that the cost is reduced while ensuring strict compliance with the procedures and the correct performance of the installation. The usual practice to date has been to outsource the siphonic installation to an installer specialised in this field installer. We believe this is a good option... but not the only one. In fact, the "design and supply" service offered by Sifonika has substantial advantages and benefits depending on the profile and preferences of the prime contractor or awarded installer concerned.


This new service includes:

• Offer

• Contract design

• Consulting

• Training

• Supply

• Project Management

• Warranty

• After-Sales


Service With this range of services and support offered by Sifonika, your installation work will be virtually the same as your usual gravity systems.


The advantages of this service are:

• No need to outsource to an additional installer. Especially when it involves non-compliance issues with the Contract Act in force in Spain.

• Large cost savings and better visibility of the breakdown of materials and services that we hire.

• Greater control and coordination of the work by the customer.

• Optimal subcontractor disappearance or inability to complete the work risk management.

• Training of operators included in the price of the service.


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C/ Pinar, nº 5.
28006 Madrid. España.
Telf: (+34) 91 745 68 69