Tag Archives: french drains

Drainage Around the Home

When asked at 3 years of age, “What is Dada good at?” my daughter answered, “Digging!”

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Both before and after the Whanganui floods of 2015 I have focused on drainage on the farm and especially around the house where pretty much everything had been done wrong – causing a lot of water to flow underneath leading to serious damage over the last three decades.

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Managing water can be done well or can be done poorly. I took this photo at work one day.

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It is important to direct water away from homes. Retrofitting drainage where it has been done poorly can be difficult and expensive. Along with a number of other approaches – including cutting channels in concrete – I put in a French drain on the high-side (South) of the house.

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Ironically I finished the drain two days before the 2015 floods.

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The perforated pipe runs the length of the south wall.

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It’s surrounded by stone and wrapped with filter cloth.

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Water flows through the stone and into the pipe.

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Stone covers the filter cloth to keep it tidy and out of the sun.

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At the southwest corner the perforated pipe enters a sump and then flows under the entire home on a gentle slope through a solid pipe to the north side, and then away from the structure.

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Any amount of drainage that directs water away from a home is important!

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Peace, Estwing

French Drains

For most people, their home is their most valuable asset.

Most homes in New Zealand are framed with wood.

Keeping water away from wooden structures is essential to keeping them in good condition.

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The home we bought nearly four years ago has issues: drainage issues. Nearly everything was done poorly or wrong, and it has been a long process sorting things out.

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One major project was installing a French drain along the high side of the home to reduce the amount of water making its way underneath.

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French drains come in two flavours.

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I definitely favour the open drain because I a want to minimise the chances of soil or roots clogging up the drain.

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I bought in a load of stone to make sure I had plenty to work with.

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My daughter helped digging and moving stone.

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I couldn’t run the water around the house so I had to go under. I used a sump as the transition to a non-perforated pipe that runs on a slight slope to the low side of the house and then over the bank and down the hillside.

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In the end it makes a tidy edge to the damp side of the home.

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Peace, Estwing