The DEKS Round Horizontal Flat Roof Parapet Drain is a high-performance rainwater outlet designed to provide reliable, long-term drainage for flat roofs and parapet walls. It's suitable for use with prefabricated synthetic waterproofing membranes, including EPDM, TPE, PVC and TPO. Built for durability and watertight efficiency, it ensures effective water removal and a secure seal even under demanding weather conditions.
This horizontal parapet drain features a smooth, slightly angled flange that aligns with the roof’s fall, simplifying installation and improving drainage performance. Its flexible, watertight design resists movement, temperature variation and structural stress, helping to maintain waterproof integrity over time.
The corner-style construction allows waterproof roofing membranes to connect seamlessly to the outlet through bends fitted with a gasket, creating a dependable, long-lasting seal. The drain can also be installed vertically if required, providing versatility across a wide range of roofing configurations.
The parapet drain’s resilient composition offers excellent resistance to UV rays, ozone and atmospheric chemicals, ensuring long-term stability and performance. Its elastic properties allow it to maintain flexibility even at low temperatures, preventing cracks and leaks. The smooth flange surface promotes strong adhesion to roofing membranes, while pre-drilled holes enhance mechanical fixing to reinforced concrete or wall structures.
The DEKS Horizontal Parapet Drain is designed for easy integration with a variety of waterproofing membranes used in flat roof systems. For best results, both the gully and membrane should be cleaned thoroughly before bonding. Refer to the relevant technical data sheets for installation guidance and accessory compatibility.
Delivery
How much does delivery cost?
Delivery charges will vary and will depend on the manufacturer, weight, size and delivery location. The cost is automatically calculated when you add items to the shopping basket.
How long will I wait for my delivery?
The estimated delivery times are shown on each product page, we will email you each step of the way to keep you informed. The majority of products can be delivered within 3-5 working days.We will advise you if the delivery period is different from than stated on our website.
Do you offer next day delivery?
If a product is available with next day delivery, this will be displayed on the product page or in the basket. If you have a particular item that you require quicker than the guide on our website, please contact our sales team on 01858 455055 during office hours, they will be able to confirm whether a quicker delivery is possible.
What if my delivery doesn't turn up on time?
Please contact our sales office on 01858 455055 or email sales@roofgiant.com and we will advise on the status of your order.
Do you offer free delivery if I spend a substantial amount?
Not as standard, we show the delivery charges separate once you go to the checkout so it is clear what you are paying for the products and delivery costs. If you are ordering larger quantities please contact out sales team who will be able to confirm if this is possible.
Do you deliver on weekends?
Not as standard, our deliveries are made Monday to Friday. If you do need an urgent Saturday delivery please contact out sales team on 01858 455055 during office hours who will be able to confirm. This will incur a premium charge if possible.
Do you deliver to Northern Ireland/Guernsey/The Scottish Highlands/Isle of Wight?
Some suppliers/couriers will deliver to these areas but not all, please contact our sales team on 01858 455055 or email sales@roofgiant.com during office hours for confirmation. If we are able to deliver the product you require, additional transport costs will apply, we will be able to confirm this to you. These additional costs are based on the manufacturer, distributor or courier providing the shipping on our behalf.
Do you deliver to Republic of Ireland, Europe and Rest of World?
No, unfortunately we nor our suppliers can deliver outside of Great Britain (and Northern Ireland in some instances).
What if my delivery doesn't turn up on time?
Please contact our sales office on 01858 455055 or email sales@roofgiant.com and we will advise on the status of your order.
Returns Policy
Important: Please do not send goods back before speaking to our sales office.
📞 01858 455055 | ✉️ sales@roofgiant.com | 💬 Live chat
We recommend you take photos of the goods and packaging before returning, as this may be required for courier claims.
Your Right to Cancel
Returns After 14 Days
Refunds & Costs
Exclusions & Brand Policies
👉 For full details, including supplier-specific terms, please see our Returns & Refund Policy.
