This couldn’t be more true than with the recent design trend of using large concrete pavers in interior and exterior design. See the retaining wall installation guide to determine if your wall will require additional reinforcement.One of the great things about concrete pavers is that they allow you to achieve the aesthetic natural stone look you’ve been dreaming about - without breaking the bank. **Taller walls may require additional reinforcement. Now your beautiful raised patio can be finished off with with the AB Courtyard Collection by incorporating seating walls or even a pergola. This will provide the balance and comfort for patio users, while still allowing for proper drainage. ![]() While a typical slope of 2% is recommended for driveways, patios can be set at a 1% slope. Keep in mind, a slope in the patio surface is needed to allow water and runoff to drain away from the house foundation. Allan Block’s raised front lip provides a perfect edge for AB capstones, or pavers. Depending on your choice of pavement, the final course of your wall may be backfilled differently.Ĭheck with the manufacturer of your patio flooring for proper installation instructions. Choose a flooring option like concrete, pavers, brick or natural stones to fit the design and style of your landscape. Once the walls of your raised patio have reached the proper height it is time to place in your patio flooring. Repeat these steps until you get to the desired height of your patio.**.From the second course and above, use a plate compactor to compact directly on top of the blocks as well as the rest of your patio area.Make sure to use wall rock in the block cores and directly behind the retaining wall. Then backfill the entire area behind the blocks and compact in lifts of 8 in (200 mm) or less.Check for level and alignment and adjust as necessary. Next, remove all excess material from the top of the blocks and stack your next course.Compact the entire area behind the blocks making a minimum of two passes with a walk behind plate compactor. This provides a fill that is less likely to settle over time. Use a compactable rock or sand behind the entire wall.Fill in the area behind the wall rock with approved materials for below your patio.(300 mm) behind the block with wall rock up to the height of the block. This will keep the blocks from shifting while filling and compacting. Fill in the area in front of the blocks with on-site soils.Paying extra attention to your base will ensure your wall is level. Keep in mind irregularities in the base course become larger as the wall stacks up, causing your patio to be uneven. Make minor adjustments by using a dead blow hammer or by placing up to 0.5 in.Check each block for level and alignment as it is installed. Starting at the lowest elevation, place the blocks on the base material near the front of the trench.Compact the entire trench, then check for level making adjustments as needed.Place the required amount of wall rock in the base trench and rake smooth. ![]() ![]() To begin building the retaining wall that will make up your raised patio, start by preparing the base. Check with your local building officials or with the material manufacturer on recommended installation of this waterproofing material. To do this you will need to waterproof the foundation wall. ![]() In addition to managing the water the drain pipe, you will need to manage the water flow around the house foundation (if you are building against a house). Place the drain pipe at the back of the trench and vent to daylight at the lowest point. A drain pipe is used to prevent water pressure from building up behind the retaining wall. Like any other Allan Block retaining wall, your raised patio needs to have proper drainage. Compaction of these areas are very important as they make up the foundation of both your wall and raised patio. Compact the base trench as well as the entire patio base area, making a minimum of 2 passes with a walk behind plate compactor.(150 mm) deep plus 1 in (25 mm) deep for each 1 ft. Starting at the lowest point dig a base trench 24 in.These cannot be used as backfill material. Then excavate the area by removing all the surface vegetation and organic materials from the area. A garden hose is an excellent tool for marking out curves. Once you have determined the location and design of your raised patio, stake out the location and use a string line or paint to mark out the area. How to Build a Raised Patio with Retaining Wall Blocks
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