When it comes to building a patio, there are several materials you can use, including brick, cobblestone, wood, and concrete. Concrete is an inexpensive option that can last for decades if done correctly. When pouring a concrete slab against an existing wall, it's important to install expansion strips between the patio and the wall to protect both structures from temperature changes in the concrete and the ground beneath it. If you're pouring concrete against the foundations of a house, it's best to have an expansion joint placed in the house.
This should cover the OSB from a few centimeters above the concrete down onto the wall of precast concrete up to the stone ledge. When laying concrete, you'll need boots and should start from the farthest side. The dumping will proceed closer to the truck and you can lay new concrete on top of old concrete. However, any unsolved problems with old concrete, such as cracks or frost, will be transferred to new concrete if not fixed.
Make sure that the wood in your house does not end up in contact with the backfill under the slab or bare concrete. Simply place a strip of that expansion material right against the house and pour it directly onto it. If you have a brick exterior, the expansion space next to the house is not necessary, as the slab will expand away from the house as needed. No matter what size yard or shed you're planning, you'll need to pour concrete and lay a slab. It's important to make sure that your slab is at least 2 inches thick for optimal results.
With these tips in mind, you can ensure that your patio is properly poured against a house.