Roof Gardens just got a little less complex...

Roof gardens! Sounds like a great idea right? You see them in movies on the tops of New York apartments and they are known to be great for the environment, but how realistic are they to actually build? A lot of professionals in the building industry are wary of designing roof gardens and with every justification.

This is because incorrectly specified or badly constructed roof gardens can wreak havoc with in the underlying structure. This being said, creating them can be a hugely rewarding process because, essentially, you’re maintaining a living structure and that requires consistent work and long-term commitment. But don’t let that scare you away, because we’re going to take you through some handy tips to make sure you don’t run into said havoc.

The key to a successful roof garden is to ensure that water is able to flow easily through the soil and drainage layers and down to the drainage points which should never become blocked. Therefore, using the right materials will make all the difference here.

Water needs to be able to flow horizontally towards a drainage point. A fall of 1:30 is more than adequate to carry water to the nearest drainage point. Drainage points should be located at a maximum of 30m intervals so that the longest distance for lateral movement does not exceed 15m (although a maximum of 30m can be made to work).

In terms of a drainage unit that will compliment this particular installation, we recommend using our HyDrain which is a robust domed roof drain with a myriad of applications. HyDrains should be positioned in a way that suits the pipelines that run through the ceiling void below or within the roof slab rather than in a way that suits the layout of the garden. HyDrain has a wide flange onto which the waterproofing membrane can be torched and will therefore ensure the flow of water into the pipeline below without the risk of leaking.

Each of the selected areas on the roof should always have at least two drainage points in case one gets blocked. Once the HyDrains are in position, they need to be protected from silt and the most effective way to achieve this is to cover them in Geotextile or Bidim. A large stone aggregate should then be placed in the planter, covering the HyDrain domed grate while simultaneously anchoring the Bidim in place.

The next step is to install a root barrier over the large stone aggregate layer. There are specialised options available on the market but again, Geotextile or Bidim can both work just as well here. Once the root barrier is in place, the next step is to add a layer of small stone aggregate and then finally, the soil and plants.

We recommend being proactive by keeping a rodding eye in the unlikely event that a pipe should become blocked or alternatively you can ensure the drainage points and easy to access.

Visit our HyDrain page for more information on this product or alternatively you can email

Happy Plumbing :) 

Unblocking & Cleaning is Easy with our Shower Drain


We’ve all been in that situation where the shower water starts to collect around our feet instead of disappearing down the drain or you walk into your bathroom bright and early in the morning only to be greeted by a drain stench strong enough to put you off your breakfast.

For most people the quickest solution is to throw some corrosive drain cleaner down the drain and call it a day, but who really knows the extent of the damage that these extremely harmful, poisonous- gas-releasing drain cleaners actually do?

With Seaqual’s WetFloor Drain range, unblocking and cleaning your shower has never been easier. The key component here is the removable Well & Trap. This device keeps a small amount of water trapped inside acting as a barrier against foul odors that may travel back up from the sewerage system into your home. It’s super quick and easy to remove and since we can remove it to clean it, there’s really no need to use those harmful drain cleaners.

We prefer using a natural, home-made shower drain cleaner that you can quickly mix up from ingredients you probably already have in your cupboard at home.


These ingredients include:

- 1 Cup White Spirit Vinegar

- 0.5 Cup Bicarbonate of Soda

- 1Tbs Sunlight Dish Washing Liquid

- 2L tap water

Vinegar is a fantastic and natural way to combat mold and bacteria because it cleans, deodorizes and disinfects problem areas like drains. Bicarb is also a very good natural deodorizer. 

Mix all these ingredients together in a bucket and Bob’s your uncle! All you need to do is lift the grate to access the trap underneath which you can do by slipping a screwdriver through one of the holes in the grate and pulling firmly upwards.

Once the grate is lifted, you can remove the Well & Trap and separate it into 2 pieces so that you can remove hair that has collected inside over time and clean and scrub away any grimy build up.

Don’t forget to scrub underneath the grate as you will see that some mold has started to build up there too!

When you are done cleaning, fit the two parts of the Well & Trap back together and place it back inside the drain.

Before putting the grate back into place, be sure to sprinkle a generous amount of Bicarb around the drain and just leave it there for a few hours before you shower again to soak up any odors that might be lingering.

Lastly, you’re going to take a step back and smile because you just achieved all this without a single plumber in sight! Now go make yourself a cup of tea and relax…you’ve earned it!


See the full video tutorial on our YouTube Channel:

Also check out our WetFloor Drain range.