Things Needed
Warning
Concrete is heavy ; get help for all stone’s throw . Pouring concrete also is messy ; wear out gumshoe boot and baseball glove .
How you extend your front porch concrete will depend onthe subsist porch , the new area you want to encompass and how you want to finish the extension service . Always check local construction regulation first — many areas have restrictions on street setbacks and other shape that will involve a porch extension service . Your first decision will be height . If your existing porch is just a slab , an extension will be sluttish . If the porch is elevated , extending it will be a more complex undertaking .
Step 1
Measure the arena where you want to cover your front porch concrete and nock it with wooden wager and builder ’s twine . If it will be a slab extension , you may jeopardize just the desired border . If it will be elevated , you will necessitate to append 6 inches on all sides to permit pouring of footing for a perimeter wall . Then excavate the area with a shovel . For a slab elongation , dig about 10 inch to permit for a six - in crushed rock nucleotide and four - inch slab . For an elevated porch , prod a perimeter trench at least eight inches inscrutable and eight inches wide , then excavate the interior four to six column inch , depending on how high your finished extension will be .
Step 2
pack together the dirt with a hand or mechanically skillful tamp , then frame your concrete extension orbit . For a slab , stake 2 - in by 4 - inch boards around the circumference . verify all corner are solid , then smash the corners together . For a higher porch , pour concrete footings in the perimeter deep , let the concrete sit at least a Clarence Shepard Day Jr. , then build forms for a wall four to six inches below where you desire your finished surface . Make walls on both sides and stake them in lieu securely . Be certain the tops of the wall forms are even all the fashion around .
Step 3
Build a crushed rock fundament . fill up the inside with medium gravel and constrict it thoroughly . It ’s best to pour it in layer , compress each layer before adding another . For a slab , build the gravel base up to the bottom of your 2 - inch by 4 - in forms . For a higher extension , make the nucleotide to four to six inches below where you want your finished open , depending on how boneheaded you require your concrete top to be . Then bring an expansion roadblock to the existing front porch concrete . Use a rubberized or mineral pitch material , 3/8 - inch to 1/2 - inch thick . Fasten this textile to the exist concrete with construction adhesive .
Step 4
Place welded wire or other reinforcing over the crushed rock radix and then pour your concrete . Mix concrete in a barrow for very small sphere . Rent a mixer or rent a concrete company for larger field . pullulate the area full of concrete , then screed it by dragging a 2 - inch by 4 - in board or standardised instrument over the aerofoil to compact and rase the concrete . Once it has begun to correct , use a trowel to smooth the surface . If you want a non - slip grain , sweep it lightly with a ling . Then use an edging pecker to wind up the edges . Very large surface will necessitate grooved elaboration joints every six feet .
References
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