Tools and Materials
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Introduction
A DIY garden column can stand alone as a pillar for a planter, lighting or outdoor décor, or it can be used as a support structure for a fence or bench. The construction can be as simple or as complicated as you like, depending on your skill level and how much time you’re willing to invest in the design. Our guide will provide a general overview for laying a sturdy foundation and stacking and securing blocks, but you can easily customize according to your preferences.
Build the Garden Pillar
Patio block pillars and columns are classic and timeless and add a distinctive flair to your outdoor area. A patio block column or pillar can be used several ways including:
- A plant holder
- A stand for garden statues
- A stand for a birdhouse or a bird bath
Steps to Build a Pillar from Patio Block
Step 1: Dig a Hole
Dig a 24-inch-by-24-inch hole 6 inches deep. The first course is buried to provide greater stability. You could also sit the pillar blocks directly on the patio. With this option, skip to Step 3.
Step 2: Pour the Paver Base
Once the hole is dug and level, pour in paver base about 3 inches deep and tamp until well compacted. Use the remaining base to level the first course and fill in around the buried course.
Step 3: Lay the Stone
Lay the first course, leveling as each stone is placed. Rotate the pattern 90 degrees for each course. Before stacking more blocks, wipe away dust and apply landscape adhesive to the top of the first course for strength. Continue laying block and applying adhesive to each row. Check each course for level as you work and quickly adjust as needed before the adhesive dries.
Step 4: Add the Pillar Cap
Finish the pillar with a cap. To create the cap, position six blocks horizontally on the top of the pillar or use a full twenty-inch square cap.
Step 5: Seal and Protect the Pillar
Although not required as part of the build, it’s a good idea to seal the patio pavers after the construction adhesive has cured according to the manufacturer’s instructions to ensure a long life. You can use a commercially available paver waterproofer or sealer. Just follow the included instructions.
Safety Tips and Precautions
- Before beginning any excavation, call 811 to check for underground utilities.
- Always wear non-slip work gloves when handling blocks to prevent injuries to your hands.
- Blocks can be heavy. Enlist a helper for unloading and placing them if needed.
Frequently Asked Questions
Here are some of the most common questions related to installing a stone pillar.
How Is a Garden Column Constructed?
A pillar column can be constructed with a single piece of stone or wood or built up with stones, blocks or bricks.
What's the Difference Between a Pillar and a Column?
A pillar doesn't necessarily have a load-bearing function. A column is a vertical structure that's intended to transfer a compressive load.
Do I Need a Concrete Foundation for My Garden Pillar?
A standalone decorative garden column can rest on a paver base foundation in most cases if you aren’t planning to place anything too heavy on top of it. However, if you’re building pillars as a support structure for a larger project, building codes may require a foundation.
What Type of Patio Blocks Should I Use?
Retaining wall blocks or stackable landscaping blocks are typically suitable for a DIY garden column.
How Tall Can I Build the Pillar Safely?
When planning your outdoor pillar construction, as with any other hardscape design, the appropriate height will depend on the type of materials used as well as local building codes. Check with the building authorities in your area for details.
Can I Build a Pillar Without Mortar or Adhesive?
For projects that won’t be used as a support structure for a larger project, or that won’t serve as a resting place for heavy objects, you can design a stackable block column that doesn’t use a construction adhesive. However, it’s always a good idea to use a mortar or adhesive for stability and longevity.