Are you here because you’re wondering how to install a French drain system all by yourself? Well, the really good news is YES! It really can be done, even if we can’t promise it will be a walk in the park.
But if you have the right tools, all the materials you need, and a compulsory ‘can-do’ attitude typical of Brisbane DIYers just like you, pat yourself on the back. Why’s that? Because you really can solve your drainage issues and tick-off a tricky new project that you can feel really proud of – all before it’s time for a cold beer!
Before we dive in, a word of caution. French drain installation is very labour intensive, you need to have a good level of fitness, especially when you don’t have the excavation tools that an experienced Brisbane plumber would use. Also, connecting to stormwater drainage system may require a licenced plumber depending on your setup and local regulations.
What as A French drain, anyway?
If you’ve read this far, we’re pretty sure you know exactly what French drains are. So let’s be brief: a French drain is a simple yet effective solution for managing and redirecting water away from areas where it tends to accumulate.
What is a French drain system? In simple terms, it’s just a trench that’s filled with gravel and a perforated pipe that blends with your landscaping and allows water to flow through it – and well away from your property. What you get is a stormwater drainage solution that works really well for preventing water from damaging foundations and any areas prone to flooding.
And the big bonus? It’s perhaps the most attractive solution possible to solve drainage issues, as the gravel and subtle trench can blend seamlessly into your landscaping or lawn – adding both functionality and aesthetic appeal.
How do French drains work?
Shout-out to Sir Isaac Newton, because gravity is the French drain system’s best friend. Consider this: water always seeks the path of least resistance, so when that wet stuff enters the gravel-filled trench, it flows into the perforated pipe and is whisked away from the problem area to a designated drainage site.
How to install a French drain
Feeling confident? Got all your tools and materials? If so, installing a French drain can actually be a super-satisfying DIY project. Here’s a step-by-step guide to help you through the process:
What you need:
- Shovel
- Wheelbarrow
- Perforated drain pipe
- Landscape fabric
- Gravel
- Level
- Spray paint – or stakes and string.
1. Plan your drainage route
Start by determining where the water is accumulating and where you want it to go. Ensure the end-point is a safe distance from your home and won’t cause issues for neighbours or shared/public areas.
2. Mark the trench path
Use your spray paint, or the old stakes and string method, to mark out the path of your trench. It should have a slight slope – about 3cm for every 2.5 metres – to ensure proper water flow.
3. Dig the trench
Start digging! Ensure you’re digging along the marked path, making the trench wide enough to accommodate the pipe – and deep enough to allow for a layer of gravel both under and over the pipe.
4. Add gravel & landscape fabric
Once the trench is dug, add a reasonable layer of gravel at the bottom. Then line the trench with landscape fabric, making sure it overlaps the edges. That will keep the soil and debris out of your precious drain.
5. Lay the perforated pipe
Place the perforated pipe into the trench, ensuring the holes face downward. This will allow the water to enter the pipe in the most efficient way.
6. Cover the pipe with gravel
Add more gravel over the pipe, filling the trench up to ground level. Take extra care to ensure the gravel is evenly distributed and the pipe is thoroughly covered.
7. Wrap the fabric & cover with soil
Fold the edges of the landscape fabric over the gravel, then cover the trench with soil. This step helps to further prevent debris from entering the drain.
8. Finish & test your drain!
Smooth out the soil and complete the landscaping in the way that looks the best. And you’re done! Finish up by testing your new French drain by running water through it, ensuring it’s flowing in the way you imagined away from your property.
When should you call the professionals?
Has installing a French drain proved a little too challenging for you? Or has your job turned out to be a lot more difficult than you thought? Don’t ever forget, S&J Plumbing & Gasfitting in Brisbane is always right here – and super-willing to help! We specialise in all aspects of drainage and plumbing, offering expert services to both residential and commercial clients all across the Brisbane Northside, Brisbane Southside, and far beyond.
So remember: while installing a French drainage system can be a rewarding DIY project, it can also feel like a pretty overwhelming job. Don’t ever forget that the friendly team at S&J Plumbing and Gasfitting is only ever just a single call or message away to provide the expert help you need. Happy French draining!