How to Create a Mosaic Patio
Using stone, pebbles, decomposed granite and dry mortar, you can build a patio surface that's uniquely yours.
Always check with local authorities about permits and regulations. Your homeowners association may have requirements about changes to the outside of your home, so make sure to clear your plans with them before proceeding. Always wear protective eyewear when working with power tools.
After measuring the dimensions of the yard, Adam helps center the placement of the deck using strings tied to wood stakes (Image 1). Continually measure and adjust the stakes until the strings form a square and level representation of the deck dimensions (Image 2).
Next, using bright spray paint and little orange flags, they mark the ground to represent the deck's four corners and midpoints. These markings indicate the placement of the deck's eight concrete support posts, called caissons.
Temporarily remove the stakes and string and then use a power auger to quickly bore 15-inch holes at the marked locations (Image 1). Remove any remaining dirt using a posthole digger (Image 2).
If the yard slopes slightly away from the house, the lower holes need extra height to reach the level string. To remedy this, cut a cardboard caisson tube to length and rest the segments on the lower holes. These now serve as concrete forms.
After mixing a batch of concrete, shovel it into the holes and lop off the excess using a spare wood stake (Image 1). Before allowing the concrete to cure for 48 hours, embed a J-bolt into each caisson (Image 2). Eventually, this will help tie down the deck.
Start by forming the perimeter and a center beam. After cutting several boards to length, screw treated lumber and redwood together to form double-thick perimeter boards. Because the center beam remains hidden, only use pressure-treated lumber. Nail on steel bracket ties to give lateral support (Image 1) and make both boards flush using an electric planer (Image 2).
Keeping the more attractive redwood side out, fit the four perimeter boards onto anchor plates set on the caissons (Image 1). Later, these anchors help permanently tie the deck down. With the main boards in place, secure them together by nailing on corner brackets (Image 2).
With the perimeter complete, finish out the frame by installing treated joists. After installing steel joist hangers at 16-inch intervals, set in the joists and nail them in.
Having attached all the joists, finish up the deck by installing the decking material. To begin installation, start by squaring up the first piece of composite to the deck and attaching it to the underlying joists with composite decking screws (Image 1). Continue screwing down the decking making sure to allow for a 1/4" gap between each plank. Attach several rows and stagger the cut seams for structural and aesthetic value (Image 2).
To complete the deck, permanently fasten the wood portions to the caissons by bolting down the anchor brackets and driving in nails through the perimeter.
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