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Recently bought an established house (only 4 years old). The previous owners didn't do anything with the backyard so when we were making plans we discovered that there is a gap between the back fence and soil level. The first 2 photos are of the gap. The last photo is what it looks like on the other side.
Basically, not sure how to fill the gap without it costing a fortune and not rusting the fence. Hubby suggested pine sleepers but there would be a slight gap between the fence and the sleepers due to the fence posts. I was told this could be a vermon trap.
The gap is 40cm deep at the deepest point and this spans across an 18m long fence.
Hoping you can help.
Thank you 🙏
Hello @NachoGirl
Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your fence gap.
I suggest digging a channel that is 200mm deep and 250mm wide and placing the sleeper in that position. The depth will have to be adjusted of course as you progress, but the general idea is to bring the edge of the soil back away from the fence to prevent it from rusting. I've placed a sample image below to give you an idea of how it can be done. There will be a gap between the fence and the sleeper which is unavoidable. If you were to D.I.Y it, it shouldn't cost you a fortune and you can do the digging in sections.
Let me call on our experienced members @Dave-1 and @Nailbag for their recommendations.
If you need further assistance, please let us know.
Eric
Good Evening @NachoGirl
Id also like to say howdy and a warm welcome to the community 
There are loads of resources and plenty of people to ask questions like this in here
My idea is similar to @EricL's but maybe not as much digging. I like the idea of the sleepers across the width of the fence to stop soil mounting up against the actual fence (think garden edging type deal). With what I was thinking is smaller in height sleepers to form a hard edge maybe 100mm from the fence itself. The ground is dug down so its just below that bottom rail across the fence and the sleepers/treated timber installed with pegs to hold it in place. The gap to the top of the rail only is then backfilled with gravel to allow water through and also block access for vermin.
Dave
