Frequently Asked Questions

Q: What are the sizes of the Standard WoodBlocX?
A: There are 5 different sizes of Standard BlocX
  • WoodBlocX 10 is 750mm Long 75mm wide and 100 mm from top to bottom
  • WoodBlocX 5 is 375mm Long 75mm wide and 100 mm from top to bottom
  • WoodBlocX 4 is 300mm Long 75mm wide and 100 mm from top to bottom
  • WoodBlocX 3 is 225mm Long 75mm wide and 100 mm from top to bottom
  • WoodBlocX 2 is 150mm Long 75mm wide and 100 mm from top to bottom
  • The groundspikes are 400mm galvanised spikes
Q: What Timber is used for WoodBlocX?
A: We use only locally sourced Scots Pine for WoodBlocX. All of our timber is sustainably sourced. We only use slow grown pine and do not use Wood containing the heart of the tree. This gives us the highest quality timber on the market for building in your garden.
Q: How long does a WoodBlocX structure last?
A: WoodBlocX is pressure treated with Wolmanit CX-10, a water based preservative which fixes in the cells of the timber when it dries. The wood is dried in a vacuum and then pressurised to 300 psi. If you cut a piece of WoodBlocX in half you will find that the preservative has penetrated virtually 100% of the wood. This means that WoodBlocX will last for 20 years and possibly longer, depending upon the ground conditions.
Q: Do I have to put a protective coating on my WoodBlocX structure once l have built it?
A: No. As explained above, WoodBlocX is pressure treated and surface treatments are not necessary at all.
Q: If I Make a raised bed do I have to line it before I fill it with earth?
A: No. The soil particles will soon seal any gaps in the BlocX. Use soil with good humus content for the upper layers to stop the beds drying out too much.
Q: What maintenance do I need to carry out on my WoodBlocX structure?
A: None at all! If after many years you want to freshen it up you could remove and replace the capping, but the wall will require nothing.
Q: Why don't you sell WoodBlocX in different colours?
A: There would be too many varieties to stock. It is easier to paint it after it has been built.
Q: Should I varnish WoodBlocX?
A: Don't varnish WoodBlocX. Water will get under the varnish and turn it black within a year. Unless you want to treat it like a boat and varnish it every year! Do paint WoodBlocX with any exterior wood paint if you want it coloured, or just leave it natural. The natural green colour will last for several years before fading to a grey. You can always paint it later when this occurs.
Q: What wood is used to make WoodBlocX and where does it come from?
A: WoodBlocX is made from Scottish or Latvian pine. Pine is strong and very durable when pressure treated, and it tends not to warp so much when it dries.
Q: If WoodBlocX structures do not need foundations then why do they not fall over?
A: Masonry walls need rigid foundations because they cannot withstand tension forces. Any ground movement results in cracking and eventual collapse unless the wall is supported on a concrete raft. WoodBlocX structures are joined with many dowels to create a rigid structure that can withstand tension forces (each dowel joint will withstand up to 0.9 tonnes of shear force in our tests). This means that minor ground movements will not affect the structure and massive rigid foundations are not required. However if you wish your structure to retain its shape in the long term you should not build it on a bog or mud but dig it into reasonable stable ground.
Q: What if I put a dowel in the wrong way?
A: It is easy to lose concentration and put a dowel in a hole that has no corresponding hole in the next row. Don't try to remove it, just cut it off flush with a saw and carry on without it.
Q: When should I use groundspikes?
A: Groundspikes will help hold the structure down, but more importantly on slopes they help to prevent the structure from slipping sideways down the hill. Groundspikes are placed on the first layer of all WoodBlocX designs and are also located in every buttress.  If you are planning to build WoodBlocX on a hard surface such as tarmac or concrete we would advise you replace our groundspikes with heavy duty angle brackets.  These can be purchased from most DIY stores.  
Q: Why is there a plate with the corner capping set?
A: Because the capping and the BlocX underneath both have a joint at the corner there is the possibility of the corner opening slightly to leave a gap in the corner capping. The plate bridges the corner joint and helps to prevent this.
Q: How long does it take to build a structure using WoodBlocX?
A: Not long! The slowest part is digging the ground to get the first row straight and level. Once this is done it is a simple process to build up the higher rows. Two people could build a wall 10m long by 5 rows high in a day.
Q: Can WoodBlocX be taken apart?
A: Yes! If you want to make a temporary structure assemble the BocX without the wedges in the dowels. The BlocX can then be levered apart and dismantled. The dowels can also be removed by punching them out with a steel punch or pipe and everything can be reused.
Q: How do I take apart a permanently assembled WoodBlocX structure?
A: With difficulty, but it can be done. Use crowbars or big screwdrivers to create a gap between the layers of BlocX and then cut through the dowels with a saw. Once separated the dowels can be removed using a hammer and punch.
Q: If I am making boxes should I put a floor in them?
A: For a patio box you need something across the bottom to prevent the box rising around the soil as time goes by. This can be as simple as a WoodBlocX brace from one side to the other. Put a piece of plastic sheet in the bottom of the box and slightly up the walls and the weight of earth on it will hold the box down. Similarly for raised beds make sure you have some buttresses or cross pieces to hold the box down.
Q: Do you supply a liner with your Ponds?
A: We can supply pond liners with our ponds and offer a standard liner for any pond under 2m x 2m large (here). If your pond is larger than 2m x 2m then we can arrange to get a bespoke liner made up for you - just get in touch with us at 0800 389 1420
Q: Why does the amount of capping look funny on my kit?
A: It is a bit tricky for us to work out the cost of capping for some sizes of beds. So we break up the capping needed into corner sets and full lengths. This is more to help us work out the price. Don't worry though as your order will contain all the capping pieces you need cut to the correct size for your order.
Q: What are the Delivery Charges?
A: WoodBlocX have 3 standard charges for our delivery these are done by weight.
  • If your order is more than £500 the delivery is free
  • If your order is less than £500 the delivery is a set cost of £40
  • If your order is less than £50 the delivery is a set cost of £25