Circular outlets are also manufactured with a smooth flange for bonding, adhesion or mechanical fixing.
Although not giving the “over and under” bond of the perforated range, these outlets can be secured into a circular drainage hole. The spigot is 240mm long and is inserted down inside of the HDPE drainpipe. This gives ample assurance that no water can back up behind the rubber and onto the deck. The spigot is slightly cone shaped and ribbed. This helps with installation into the hole, and prevents water passing back up behind the spigot.
Please see the size chart in the image & download sections for guidance.
Installation
Waterproof the area around the drainage hole, insert the correct size of outlet connector into the hole so that it is covering the waterproof membrane and then secure the connector either by using fixings or adhesive. Then prepare the area for another layer of waterproofing membrane so that the outlet connector is encapsulated in a “sandwich”. To ensure that the second coat of waterproofing bonds properly, the area should be primed. Once the membrane / adhesive is cured a hole may need to be cut to reveal the drain pipe, and a leaf guard or gravel excluder is inserted into the hole. The outlet is then finished.
This section is split into two parts, with advice about Wallbarn's pedestals range, as well as their green roof offering.
Pedestals
What are the advantages of pedestals?
They are quick and easy to install, offer improved drainage, protect the surface underneath and can be lifted at any time for maintenance.
How do I install them?
The pedestals are placed on a flat, hard surface, with no mechanical fixings required. They need to be placed on a structured surface, and shouldn't be placed on non-compacted earth.
Do they need to be fastened?
No, the pedestals are part of a suspended system, with the weight of the slabs/decking holding everything in place.
Green Roof
What is a green roof / modular roof?
Sedum or other succulent plants are grown in low-level substrates. Modular systems are grown in sections and can be lifted into place and joined together.
Do they need maintenance?
The plants are very hardy, but watering in extreme conditions is recommended. Dead leaves and vegetation should be removed at regular intervals, and a slow-release fertiliser can be applied at certain periods throughout the year.
What you need to know
Delivery charges
Delivery access
Wallbarn Parcels including pedestals and drainage outlets are packed into bags or boxes and delivered on a to-door service.
Wallbarn Pallets are delivered to kerbside only. Wallbarn cannot bring vehicles or pallet trucks onto gravel or earth surfaces, the customer will need to make arrangements to move the materials from the hard surface onto there property.
Wallbarn Double pallets including aluminium rails and decking materials are delivered on double length pallets and will be delivered to kerbside only.
Wallbarn Green Roof – M-Tray® and associated green roof products are delivered on pallets to kerbside only.
Date and time of delivery
Failed deliveries are chargeable
Damages & missing items
Do not install purchased items if you have a query with the product (e.g. if you need to query damage that occurred during transit).
If an item is installed it will not be refunded or replaced.
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.
