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Building EnvelopeBuilding Envelope

Syphonic Gutters And Drainage

Syphonic (or Siphonic) drainage technology has been in use across Europe for over 40 years and in the UK since the early 90’s.

HS RoofClad

Today in the UK, Europe, and indeed the rest of the world, we are now experiencing heavier rainfalls. This increase in rainfall poses increased risks to persons responsible for the buildings they occupy or work in. A significant challenge now posed is providing sufficient, safe and efficient roof drainage.

This industry over the years, has seen a move away from traditional gravity fed gutter systems and drainage that struggles to cope with a large increase in volume of rainwater.

In today’s current climate we are seeing a significant increase in the use of syphonic guttering systems on industrial, commercial and retail buildings which provide quicker and more efficient discharge of rainwater from roof areas.

 

Some benefits associated with syphonic technology:

  • Fewer outlets and downpipes than traditional drainage systems
  • Ability to connect multiple outlets to a single source
  • Cost savings as at least 75% fewer downpipes required
  • Ability to route rainwater easily for future use, irrigation, recycling etc
  • Reduced installation times
  • Systems are self-cleaning due to increased flow rates

Conventional gravity-fed gutters work on the principle of water’s ability to spread out and flow to the lowest point (gravity), exiting from the roof surface through the gutter channels, into the rain water outlets and through the downpipes, to either exit at surface level or below ground into a drainage system.

Problems with gravity fed systems occur as and when the water exits the outlets and into the rain water pipe. Unfortunately, air is also pulled in and this significantly reduces the area for drainage capacity, making it much less efficient. Other issues that aid in poor or failing performance of a gravity fed gutter, is that they are prone to becoming blocked with leaves and other debris.

Blocked and backed up rainwater outlets, pipes and gutters can cause water to pool and fill within the gutter itself which then may cause further damage and subsequently potential damage to roof areas.

As an alternative we can provide a fully-engineered syphonic roof guttering and drainage systems. These systems contain a baffle to surpass air (and debris) from entering rainwater pipes, therefore allowing them to fill with water, which is then pulled into the rainwater pipes at high velocity, and the downward force created by the syphonic system creates a vacuum, sucking the water through at speed and making the system effective at removing water.

If you require advice or technical help on syphonic drainage technology, please contact our expert team.

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