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Blog / Noticias Sifónika

Why Maintain Siphonic Systems

Have you ever experienced water ingress into a building caused by a gutter overflow? The damage can be really substantial in addition to the negative effect on labour productivity or work in the building in question... Not to mention the image.


Mantenimiento SifonikaWhatever system of rainwater drainage used, and should be a manhole-established custom to go up to the roof twice or more times a year and clean the outlets. Their maintenance, according to Eduardo Torroja Institute for Construction Science, should be as frequent in a siphonic system as in another working by gravity.


Read more: Why Maintain Siphonic Systems

The Importance Of Integral "Turnkey" Service

“An expert is someone who has made all the mistakes that can be made in a given field” Niels Bohr, Nobel Prize in Physics.


“Perfection is not having no more to add but nothing to remove” ANTOINE DE SAINT-EXUPÉRY, pioneer of international postal flight and author of The Little Prince.


foto brochure Sifonika 2peqWith whom do you project and contract your rainwater management systems? Overall, there is much talk about the product and little on services.


But clearly, when it comes to a calculated installation, which must be installed according to some design specifications and proven technical skills, the vehicle through which all this service is provided becomes of paramount importance.


There are a number of advantages when concentrating the integral service in a single company, namely:

Read more: The Importance Of Integral "Turnkey" Service

New Suds Section

Have you ever wondered where the rainwater go? And how is urban development and infrastructure affecting to its natural balance?


In a natural environment water is filtered in the soil, evaporated on surface or slowly driven by streams and tributaries to rivers, lakes or sea. The water in this cycle is clean and safe life.

Read more: New Suds Section


Logo Sifonika -vert-RGBHow time flies!

We are already one year old on the market and we are pleased to inform you that we have successfully implemented 15 major roof drainage projects, including some of great importance, such as:


• Coca-Cola Silo in Leganes

• Daoíz and Velarde Theatre in Madrid

• Queserías Entrepinares Offices in Valladolid

• Ecenarro Paintings Building in Azkoitia

• Bynsa Pets Expansion in Zaragoza

• Building for Procavi in Seville

• Building for Uvesco in Irun

• Aldi Store in Tarragona


Integral Roof Drainage Systems

Sistemas Integrales Sifonika1Do we give a global sense to the way we design rainwater drainage systems?. Or do we solve partial links without any sense of wholeness?.


I greatly fear that it is the latter. In an environment increasingly sensitised to the concepts of sustainability, efficiency and climate change we cannot keep ignoring the new way in which roofs should be drained. Because as my mother told me, "Son, things manhole done are better."


And for that, this time I want to state what we believe are the five key issues that we need to know in this field, which by the way, affect not only to new developments but all existing buildings:


1 -. Roof drainage systems must take into account the worst storm event that the building may face in its life. Designing for less is to risking to potential overflow and collapse.


2 -. The historical series of rainfall intensity are a less and less reliable indicator of the intensities of rain we are currently experiencing. There is an increase in intensity and frequency of heavy rain events.


3 -. Designing for higher intensity DOES NOT mean necessarily larger diameter pipe and even less on a siphonic system. Doubling manifolds running on parallel or as "primary-secondary" mean a greater flow drainage capacity and a reduction in excitation time of the system, that is, a shorter reaction time the immediate drainage need produced by the storm phenomena.


4 -. Higher roof drained flow means that we must have sufficient capacity in the buried sewerage network, which unfortunately does not happen often as it collapses easily in the extent to which the construction of buildings and the runoff increase. This seriously affects the discharge capacity of roof drainage systems where a "funnel effect" occurs with disastrous consequences in most cases.


5 -. Then it clearly emerges the need to know what to do with this flow excess at which buildings are exposed more frequently and which we can now easily capture through siphonic systems...


And here's where the so-called Sustainable Urban Drainage Systems (SUDS) come in. These systems, which can be used to infiltrate or to recycle water are very important advantages in terms of economic return, reduced flooding, reduced diffuse pollution, curbed denaturation, aquifer recovery, etc.


In conclusion, secondary or emergency siphon systems that give extra protection to the new buildings, particularly (for its higher proportion of the whole), to existing ones, need a downstream drainage capacity that SUDS solutions already provide great advantages. And these in turn need the siphonic systems to feed them and give them meaning. We have reflected this interaction in the following graph:


Grafico Sifnika


From Sifonika we are at your disposal to promote this new way of designing that is more in line with the real needs and DOES NOT imply higher costs if we can reuse or infiltrate water.


I wonder if w will keep waiting for the price of water to rise to the level of other European countries to see how this integral solution is increasingly necessary.


Let us be more responsible, ecological and innovative: Do you join the cause?.

Rain Intensity As Critical Factor

imgsifonikaIs your roof manhole protected?:  there are several key elements in the design of a proper roof drainage system but one in particular stands out: The rainfall intensity to use when deciding how much protection you want to give to the roof. This is a critical factor for the system to successfully accomplish its mission of drainage and for us to avoid unpleasant problems caused by water in buildings.

Read more: Rain Intensity As Critical Factor

Sifónika: ¡Di adiós a las bajantes!

We are Rafael Rojas and Jose Antonio Barrada and are pleased to announce the new journey of Sifonika, founded in 2012 with the mission to provide integral services (training, design, installation and warranty) in relation to the roof rainfall siphonic drainage, and its subsequent handling and possibility of water infiltration / storage.

Read more: Sifónika: ¡Di adiós a las bajantes!

Presentation Of Rafael Rojas, Responsible For Operations

Hello, I am Rafael Rojas, Head of Operations in Sifonika. I have spent the last ten years of my life dedicated to marketing, design, prefabrication and installation of siphonic systems in Spain and I think it is good time to look back and take stock of what I have learned in all these years. First, I think we have advanced a long way in relation with dissemination of this technology applied to the roof drainage. Today, there are many engineers and architects who are already familiar with the siphonic concept: To take profit of the full filling of pipes for increased drainage speed and to able to lead rainwater to flat horizontal collectors, minimising the number downpipes in a 20:1 ratio with respect to the traditional gravity system. Secondly, I must thank all those who have relied on this new way of desk drainage. They have made possible a true "revolution" that facilitates a more flexible use of interior space of a building, less use of materials and civil works, an acceleration of the work planning and a greater easiness to give greater rainfall protection to the roofs of our country, in addition to greatly facilitate the recycling of rainwater. I consider important to highlight the fact that the decrease in new development resulting from the current economic situation has been compensated for the siphonic industry with significant increase in rehabilitation projects of roofs or entire buildings, requiring emergency or secondary systems aimed to improve existing systems. Another remarkable fact is the general increase in rainfall intensities throughout the Spanish territory. If we add this item to the upward trend of designing roofs with large dimensions or pending we find that the result is an increasing need for greater drainage capacity and speed at times. As if this were not enough, we also found a patent saturation of urbanisation collectors as construction has been increasing, which also meant having to adapt "upstream" collection not to be affected by this restriction. Finally, I believe that the consciousness has also advanced to a necessity to conduct a proper maintenance of the roofs, notwithstanding the type of evacuation system used. From Sifonika we are ready to boost the siphonic "second revolution", which is going to arrive. From this blog we are going to strive to offer you all the relevant information so you can benefit from this kind of installation widely used all around the world.


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