Concrete and masonry foundation walls shall extend above the finished grade adjacent to the foundation at all points a minimum of 4 inches 102 mm.
Concrete patio against siding.
If the concrete is touching the cedar then it is not likely there is any drainage for the wrb and the cedar.
Ca code certainly calls for 2 clearance to concrete patio with stucco.
The siding should be 4 8 inches above the surface of the concrete.
You are right to be concerned about placing the new concrete step in direct contact with the fiber cement trim or most siding and trim materials for that matter.
I would advise locating a vinyl siding company and getting them to break some scraps that they ve laying around about an inch much higher than the concrete will be poured and as far out from the house as the scraps will go.
Sometimes with the siding trim and door out of the way a flashing can be slid in between the house and the concrete.
Al mollitor sharon ma.
If it were flashed with 1 2 inch gap like shown in the text book water could run below the flashing and on to raw wood.
Concrete absorbs and holds water and most siding and trim materials including fiber cement aren t rated for contact with concrete.
Typically when i pour concrete against a house foundation never pour concrete against any siding imho it invites trouble later i have an expansion joint set to the house.
The gravel is about now 3 4 inches up the siding as you can see in pictures.
I used crushed gravel as a base for patio.
I d like the patio to get as close as possible to the house but am realizing that it may not be good to put the pavers right up against the siding.
This does not answer how close siding should be to the grade but foundation above grade is more important.
A concrete patio is a finished grade.
Observed non standard installation of concrete on the patio see photo this section.
Wrcla wants 2 clearance to prevent wicking.
Other times an l flashing over the surface of the concrete and work but keep in mind this can also trap moisture behind the the concrete.
It can be cork 1 2 thick by 4 tall set to the wall with short pins to hold it while pouring.
Large roof overhangs can provide protection in some cases.
If you must do it try to install some serious flashing between the wood and concrete such as ice and water barrier protected by aluminum that goes well below any wood and up under the siding.
Editorial advisor mike guertin replies.
Any water would run all the way down.
It is unknown what type of water insect access is available occurring under the siding below the surface level of the cement.
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