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A Basic Yet Attractive Seatwall

August 9, 2012

A small seat wall or garden wall can be a great addition to a landscape project. Whether it serves as seating or functions to define a specific area seat walls are an attractive component that really aren’t too complicated to construct. I’m going to quickly run over the materials and construction of one of the most common seat walls we build. Using Brussels Block Dimensional Stone as the wall stone and a natural stone coping of Banas Sandstone it is a great value and looks stunning. Picture Below

Toronto Landscaping Seat Wall

Bussels Block Dimensional (Mahogany Ash ) w/ Banas Coping (Kota Black)

Step 1

The first step to creating this seat wall is to decide exactly where it will go and excavate the ground to allow for a proper gravel base. To do this drive two stakes into the ground. One where the wall will start and the other where it will end. Tie a string between them making sure that the string is exactly level and at grade. To do this you might have to dig a little trench. You can use a line level, hold a 6′ level on the line or use a laser level to ensure level. For angles set a stake at each each corner being careful to take note that this string will be either the outside or inside of the wall.

Step 2

Step 2 is to excavate and add the gravel to your excavation. A Dimensional stone is 4″ deep and since burying one course and using 4″ of gravel is pretty much standard your final excavation depth is going to be 8″. So go ahead and dig your trench along your string line at a depth of 8″ from the line and a width of about 10″ to give you some working room. Once excavated use a hand tamper or jumping jack to compact the soil at the bottom of your tench. Now add 4″ of gravel along your tench compacting in 2″ lifts. Now you area almost ready to start stacking the stone.

Step 3

Now that you have your tench with compacted gravel it is time to set the first course. This is the most important course you will lay because it all builds off this course. To ensure that the wall is level and straight you are going to use your string line once again. Set the corner of the long side of the Dimensional Stone next to the string at the exact same height just beside the string. Use a bullet level to level front to back. Using a rubber mallet and having some extra gravel on hand is always a good idea at this point. Take your time with this. Once the first course is down it is just as simple as stacking the blocks ensuring they line up correctly and gluing them together with an adhesive such as PL Premium. Using a level as a straight edge and plumbing the stones is always a good idea. Stack the wall to a height of 18″ and then glue the Banas coping on the top of the wall to finish it off ensuring even overhangs on visible edges.

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