Buy a 110mm Soil Mushroom Vent Cowl Here
A Mushroom Vent Cowl is a domed plastic fitting which allows air to escape without letting water or debris in. From the top the domed surface allows water to run off of it, but from the bottom it attaches to a 110mm push fit pipe. There’s a gap at the bottom of the dome which will allow air to escape, preventing draughts from travelling back down the pipe.
Usually the vent cowl is used at the top of the soil stack, above roof level, where it will allow gasses to escape without the smell being noticed by anyone else. The mushroom vent simply pushes over the top of a plain ended piece of 110mm soil pipe, However a solvent weld cement can be used to glue it on for a more secure fit if required.
The product is lightweight (less than 0.5kg) and is made from uPVC plastic. uPVC is strong and offers good heat and chemical resistance properties, making it a reliable choice for long-term products like soil pipe fittings.
The vent cowls come in three colours. Black, grey and white. However we don’t keep white in stock so please call us if you require this colour and we’ll get back to you with price and availability including VAT.
You’ll commonly find vent cowls fitted not only to a normal home, but they’re often also used on caravans, boats, barges, outhouses, chicken sheds, farm buildings and even for attenuation systems to allow air to escape. Wherever you use them, they’ll help stop debris entering the system.

110mm Soil Mushroom Vent Cowl
Soil pipe systems link to a bathroom by way of a pan connector, and usually will then run up the outside of the home and allow waste water to flow into your sewerage system. The pipework will then run above the roof level, where a mushroom vent cowl may be used to cap the top of the pipe off to stop things from getting in.
Mushroom vents are really simple to install and will be compatible with most other 110mm soil systems on the market, including popular soil products. If you want to add a vent cowl from the range to your basket, you can do so quickly through our website.
Colour Choices & Finishes
Our products are available in a choice of finishes to suit your project. Grey soil fittings are by far the most popular, but black and white vent cowls are also available. The finish you choose won’t change how the vent works – it’s purely an aesthetic decision to match the rest of your soil pipe system.
If you have any questions, just give our friendly customer service team a call.
Additional Information
If you’re purchasing multiple products, don’t forget to add them to your basket in one go to save time. All prices can be toggled to include VAT, and we provide clear information about delivery on our delivery page. Should you need further information about vent cowls, fitting, or compatible Products, just reach out to us.
You may also want to add accessories such as a filter to prevent leaves and other debris from blocking the system. In some cases, filters are especially useful in garden or rural settings where draughts and debris are more common.
Ordering & Delivery
When you add a 110mm Soil Vent Cowl to your basket through our website, the checkout process will clearly show the VAT amount applied. If a white option is required, please contact us and we’ll confirm price, stock, and delivery information. Delivery is quick and reliable across the UK, and we ensure that all products are packaged securely.
Customer Support
If you have any questions about this vent cowl or any other products, just give our friendly customer service team a call. We can provide the latest information, recommend filters or accessories if required, and advise on whether a suitable option might be the best fit. We’re always happy to help you choose the right vent for your project.
| Specifications: | |
| Size: | 110mm |
| Material: | uPVC |
| Type: | Soil Pipe Fitting |
| Colours: | Black, Grey |
| Weight: | 0.5kg |
| Product: | 110mm Soil Mushroom Vent Cowl |
| Brand: | Aquaflow |




Simon E –
very quick delivery, very happy thanks
kevin c. (verified owner) –
great product, great price !!!
Andy L. (verified owner) –
Fitred perfextly and seems well made
Graham Driver (verified owner) –
good value
Richard Hollister (verified owner) –
Roger Hornett (verified owner) –
Exactly what I required
Gordon Beresford (verified owner) –
stuart white (verified owner) –
Gurpreet Seerha Seerha (verified owner) –