a close up of a wooden gravel board under an overlap fence and sitting on a bed of gravel

A fence panel isn't complete without a sturdy gravel board. Gravel boards protect the panel from moisture rising from the soil and will help retain aggregates in the garden. You should not forget about them when installing a fence.

Gravel boards – why bother?

You can erect a fence without gravel boards. You can, of course, have a wish to replace that fence earlier than you otherwise would! Even when a wooden fence has a guarantee against rot, it can become damaged either physically from stones and errant mowers and will rot quickly when on direct contact with the soil. A solid gravel board will always make a fence look better.

Types of gravel board

Wooden gravel boards look great and are easy to cut to size. Always include them with any fencing order. Make sure that each board has been pressure treated with a preservative to ensure longevity.

Many people opt for concrete gravel boards, especially when fixing fence panels between concrete posts. They simply slide into the grooves in the concrete post. However, if any need cutting to size they do take a bit more work and create clouds of dust. The plus side is that they last for decades and are relatively maintenance free. A wash down will clean things up and get rid of algae build up.

a dark brown gravel board supporting a fence panel atop some pea gravel concrete gravel boards and post supporting fence panels atop some grass a light brown gravel board supporting a fence panel atop some pea gravel

When to fit gravel boards:

Do it every time you fit a new fence panel (unless the existing one is still in good condition – a poke about with a screwdriver will find rotten areas) and fix them in position once the panels are up and solid. That's because fence panels may vary ever so slightly from one to the other and if they have to fit a fixed space you will have to cut them down to size (shaving a centimetre of the end of a framed panel is a real pain). It's so much easier to saw through a gravel board. If you do get the saw out, treat any cut ends with wood preservative to reduce the risk of rotting.


How to fit gravel boards:

It's easy to fit a gravel board. There are three methods you can use:

1. With slot-in fence posts: make sure the posts are secured for the correct distance for your panels. Measure and cut the gravel board to match the distance. Slot the gravel board in before you slot in the panels. Easy! (this is the method used for concrete gravel boards as well as wooden gravel boards)

2. With clips: install the clips into the centre width-ways of your fence post at the height you require. We recommend creating pilot holes to prevent the wood from spliting. 

3. With wooden blocks: Make some wooden blocks out of pine or cedar. These can be the same width and thicknes of the gravel boards. Position them either side of where the board will meet the post. Screw them in place. Then "slot" the gravel board end between the blocks. Screw through the blocks to secure the boards. Repeat at both ends, of course.

Use galvanised screws throughout your installation to ensure ease of replacement and to reduce rusting.

Methods 2 and 3 make it easier to replace gravel boards. They are the most likely part of your overall fencing to rot first - that's their job! Replacing a gravel board is far cheaper than having to replace a whole panel or even worse, a run of a few rotten panels.

Spirit levels

Don't for one second consider fitting a gravel board without a spirit level. In fact, that goes for all your panels. 'I'll judge it by eye' will only highlight one major flaw – that your eye cannot judge levels!

If the ground is sloping then step the boards and fences.

Take your time, pencil it all out on paper before you break the soil with a spade and use that spirit level till the bubble bursts (they don't – but you get the sentiment).

a spirit level on a wooden board  

Top Tips and techniques:

Direct or suspended?

Some people place the gravel boards directly on the soil. Others raise them a little off the soil surface. The thinking is that if they are directly on the soil all aggregates will be held in the garden.

However, raise them a little and it allows water to run through preventing all chances of localised flooding or puddles. I like a little gap between the bottom of the gravel board and the soil surface. I like the idea of air circulation, access and exit points for water and a board that will last longer.

If you are 'on the surface' make sure the soil is level, firmed and even add a layer of sand to bed the board into.


Hedgehog watch

Everyone loves hedgehogs in the garden for their voracious appetites for all things slug-like. However, they are becoming scarcer partly due to gardens becoming more secure. All a hedgehog needs is a hole in a fence or hedge the size of a small football and bingo, they are free to roam around a wider territory munching on more molluscs as they go.

Now, obviously, a solid wall of gravel board stops that freedom of movement. Before erecting a run of fencing, including gravel boards of course, you could create hedgehog-friendly gaps in the fencing. Perhaps cut the gravel board to help the hogs in our hedges. Your garden will be better for it.

  a hedgehog amongst some flowers


If you'd like to learn a little more about the other fencing accessories we offer, why not take a look at the following video? It's packed full of extremely useful information.


I hope you enjoyed this guide! If you found it at all useful, please share it with your family and friends on social media, or leave a comment down below; the whole team, here at Buy Fencing Direct, would really appreciate it. If you're interesting in other garden tips and tricks, click here to read a few more of our helpful blog posts. See you shortly, for the next instalment of Buy Fencing Direct's blog!