4 INCH 100MM Round Soil and Vent Condensation Trap with Overflow - Stop Water Leakage Back in to Your Duct Work - DUCTING Fittings by KAIR Ventilation

Product Information

Extractor fans in bath or shower rooms, where warm moist air passes through a pipe to the outside, are particularly prone to condensation. If you’re looking at installing an extractor fan in your home and you plan on venting through the ceiling, there are a couple of things that will need to be taken into consideration. To alleviate this problem, we recommend installing a condensation trap, this will catch any moisture and remove it from the ducting run.

For this exercise, we’ll assume that the fan is in place and the pipework passes through the roof with a vent terminal fitted. Note - To fix this to your fan you will need to use Duct Tape or Cloth tape ( not supplied )- see picture above. If your vent pipe goes straight up through the roof with no flexible connector, follow the steps below:If you have a flexible pipe above the vent pipe, it should be easy to lift it, fit the trap onto the pipe from the extractor fan, and then insert the upper vent pipe into the top of the trap. Firstly, you will need to work out where the fan will eventually vent to the outside world. Ideally, going through either a soffit or gable end wall is preferable as this allows for a low extraction point. Keeping the extraction point as low as possible is important as it will allow the ducting to run at a slight downward angle away from the fan unit, whether you are installing a ceiling mounted axial unit or an inline fan. In this DIY guide, I’ll share my experience and show you how to fit a condensation trap in five simple steps. A condensation trap is essentially a collar that is installed in the vertical duct run after the fan unit. The collar is then attached to a 22mm plumbing pipe which can then be either run out of a gable end wall or soffit, similar to a condensate pipe for a boiler, or plumbed into a waste water pipe to allow the run off to drip away.

Condensation traps are required on ventilation ducts wherever ducting passes through an unheated space, such as a loft. You need to go outside for the final stage, so get your extension ladders out and ensure they’re in good condition. Condensation traps are designed to be installed with solid ducting rather than flexible ducting so bear this in mind when you are choosing your accessories for your installation. Make sure you fit the trap the right way up — there should be an arrow on the side indicating the direction air will flow. However, If a gable end wall or soffit extraction point is not an option, you may find yourself needing to extract vertically out of your roof using a roof venting kit or venting tile. This now poses a potential problem with condensation.

3. Faulty Unit (within 6 months)** 

I recently fitted a fan in my bathroom ceiling, which discharged through the roof via a plastic pipe.

The arrow on the Water Trap shows the direction of the airflow and when mounting the trap this must point away from the fan.If a product fails after six months of receiving the item it is considered a warranty claim and is the responsibility of the buyer to pay for the return postage. We will then dispatch a free-of-charge replacement once the original has been received and tested. Book a DPD Return Here Also, if you have any problems with condensation or mould, several articles in our ‘ Infestation, Rot and Damp’ section will help you resolve these serious issues. The trap is simply connected to the system as part of the vertical duct run and an internal gutter within the trap collects the moisture and then drains it out through a standard overflow-pipe to the outside. This ensures that the moisture cannot enter a potentially hazardous area. The condensation trap should be installed as low as possible, whilst still high enough to maintain a fall on the overflow-pipe. If you want to know how to fit an extractor fan, this video by Charlie DIYte tells you everything you need to know. Mounting any fan in a bathroom ceiling will incur condensation issues and by using a Vectaire Water Trap this will prolong the life of your fan by many years.

Doing a dry fit before the final fix is good practice. When doing the final fix, apply glue to the ends of the pipes. The vent pipes will sit approximately 40mm into the trap, leaving a gap of 25mm. I have used Fastlec three times each time I have found them to be efficient fast and happy to give you information on their products."

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Condensation Trap 100-110mm with Overflow Connection. Fits either 100mm I.D. Pipe or 110mm O.D. Pipe As for installing a vent pipe through a roof, this video on the Roofing Megastore will prove extremely useful. After the Vectaire fan is fitted into the ceiling, from above in the loft space, simply push the water trap onto the top of the fan and seal with gaffer tape or sealant to give an air tight seal. Many modern homes are fitted with Mechanical Ventilation with Heat Recovery (MVHR) systems for ventilation in air-tight houses. These systems also require a condensation trap.