Constructing Your Panel Fence

A Monton Fencing step by step guide!

Fencing panels Fencing panels are available in a wide selection of styles and sizes. They are traditionally 6' or 1.8m wide and should be fixed to 75mm x 75mm or 100mm x 100mm wooden posts or 125mm x 100mm slotted concrete post with a 6“ or 12“ gravel board depending on the height of your fence.

The width of a panel is not important when constructing a new fence. However, when ordering replacement panels double check the size of the existing panels as some may be 1.83 (6') or only 1.8m (just under 71") for special size panels measure top and bottom between posts knock 1⁄4 “ off at the narrowest point to allow the panel to slide in and therefore may not fit the gap between the existing posts. (A number of panels are also available in half-lengths). We strongly recommend all of the panels and posts used are pressure impregnated with preservative, or dipped in preservative: fencing materials supplied by Monton Fencing are pressure treated with the latest preservative or a small selection of panels can be supplied as dipped.

Please note - Whilst fence panels benefit greatly from pressure treatment, light frame timber panels are prone to fungal and insect attack. If in direct ground contact to benefit from additional years service we recommend firstly do not place in direct ground contact use an easy to replace timber or concrete gravel board if possible. Secondly do not mount soil up against the face of the panels and treat your constructed fence regularly during its life time with a proprietary fencing product. These simple guild lines will enhance your fence and give you added years of service.

Timber or concrete posts or post support systems

Posts can either be dug into the ground and concreted in or using spiked post supports, for stony or made up ground digging can be a safer option. If you decide to dig in the posts into the ground to concrete a solid foundation you will need post fix or mixture of sand - cement. If using post spikes, the fence posts can be the same length as the panels or if using post caps had 1“ on if dug in and concreted we recommend 600mm in the ground I.e. 1.8 high panel would require a 2.4m post.

There is a choice of post sizes available. 75mm x 75mm may be adequate for lower fences but for higher fences or exposed positions we would recommend 100mm x 100mm wooden post or 125mm x 100mm concrete post. Slotted H posts are easier by fixing the posts and simply sliding the panel in between the posts. Remember always to purchase wooden gravel boards and post that are pressure treated concrete posts and gravel boards are ok as they will not rot.

Gravel board

A gravel board has the benefit of lifting the panel clear of the ground and removing contact with the ground. Gravel boards normally come in 2 sizes 150mm x 50mm or 300mm x 50mm in wood or concrete check that your gravel boards are the same length as the panel.

Clips (wooden post)

Clips are usually used to fix panels between the posts.

Quantities & Measurements

Divide the (length of the fence) by the (length of panel plus one post) to calculate number of panels and posts required. Remember to add one additional post to finish the run of the fence. Remember that depending on the thickness of posts you are using I.e. 75mm x 75mm or 100mm x 100mm you will gain on the over all measurements example a run of 10 no 6ft panels using 100mm x 100mm posts you will gain 1mt in length as most panels fit between the posts.

Safety & Tools

You will need stout gloves and safety boots, and safety glasses if using power tools. You will also require a hammer, spirit level, long crowbar and peg and line, saw tape measure, pencil and shuv-holers narrow digging spade. If using post support spikes you will need drive in tool to avoid damaging the spikes. We will supply a timber drive in free of charge.

Construction - Preparing the area:

Clear the line of any old fence or undergrowth . If there is a slope, work out the steps required. If the ground slopes its much easier to start at the highest point and work downhill stepping the panels down as required

Installing posts:

Remember before you dig any holes or drive in spikes check that there are no service pipes under ground as this can be dangerous and costly I.E sewage drains, gas water or electric construction. If using spikes make a pilot hole with a bar. The drive in tool protects the top of the spike and allows corrections but check regularly that it is driving square and level, if you are digging in keep the hole small as possible around 9” square depending the size of the post.

Calculate the total height of your fence plus gravel boards if using gravel boards add 1” the post looks better finishing above the panel mark the inside slot or wooden post this should be the point on the post where the bottom of the fence will fit.

Fixing your first post, double check measurements hole depth and post size and panel put approximately 1⁄2 a shovel of concrete in hole to gibe a 2” depth. Gently lower and position the post into the hole checking using a level that it is up right and the mark on the post should just be above the ground level. Add more concrete around the post compact the concrete with a timber fencing batten. Fill the hole around the concrete post to ground level just above the mark on the post. Measure the post below the mark and add 1” (3ft fence approx 19”) 4ft & 5ft fence approx 22” 6ft fence 7 to 8” approx 25” (depth of hole).

Dig your post hole - this should be 9” to 12” square depending on ground condition and height of your fence. Mix concrete (sand-stone-cement) or easy option post mix see instructions Fixing your string line Fix your string line between 2 points on your first post 6” from ground level enable you to keep your fence post straight (digging your next hole using a 6ft straight edge timber but the straight edge inside the slot mark out in line with the first post and string line dig hole 9” to 12” square depending on ground conditions and post size).

Setting up your first section - set in concrete 1 house brick 2” from first post level up fix 1 no small flag 12” from second post are level across lower your base on the level bricks or flagging level up base panel up. Setting up your fist section of the marked line. Set house brick in concrete on the mark on the line first post level across lay 1 small flag 12” from second post hole. Level across with straight edge lower the base down between the slot.

The base should now be level if not just slightly tap down to level put in your fence panel on to the base and into the post. To fix your next post, measure that the hole is at the right depth before you drop your next post in, 2” gravel 2” concrete in bottom of hole carefully lower the post into the hole hold the post with the slot against the fencing section and slide the post between the base and the panel using a level.

Fine tune the position of the bottom of the post so that it is up right against the fencing section and add more concrete around the post up to the level of the brick check that posts and panel level before moving on to your next section - repeat section until you reach your last section. Fixing your last post using an end post to finish off. Fix as first post.


Measure the gap between the slotted posts knock off 1⁄4”. Cut your fence panel and base panel. Slid the concrete base and panel down into the slot.


Monton fencing can make you a short panel and base panel to suit.


This can be done at the end of the job or as you go on. Bench up around the house bricks more support. Spread the soil along the fence line to the same level as the ground level.