Valley Glen Decks & Patios, Roof Water Routed
Valley Glen decks and patios with roof water planned: downspouts piped under the patio, surfaces pitched off the house and flashing at every deck ledger.
Roof gutters can empty right where a Valley Glen patio is planned, so the downspouts are the first water we deal with. Each one is connected to solid pipe laid in the base before the surface goes down, and the pipe runs under the patio to a dry well or a planned outlet. The patio then pitches away from the house, and a raised deck gets ledger flashing and joist tape.
Under the patio surface
Solid pipe carries the roof water, since perforated pipe would leak into the base and soften it. Cleanouts at each bend let the line be flushed. The base is compacted in lifts, and the pipe sits in a bedding that protects it from the plate compactor. A dry well, where the soil allows one, is a gravel-filled pit wrapped in fabric that lets water soak in slowly, set away from the foundation as the engineer directs. Surface pitch keeps rain moving across pavers or concrete toward a channel drain at the outer edge.
A raised deck over the same yard
On a deck, water that falls between the boards reaches the ground, so the soil beneath is graded to the same outlet. The ledger gets a membrane behind it and a metal flashing over it, and the joists get tape on their top edges. Post bases lift the wood off the concrete. On a sloping lot, an uphill trench catches runoff before it reaches the footings. LADBS reviews the structure and the drainage plan for Valley Glen. Jobs in Van Nuys, Sherman Oaks or Encino use the same routing.
About our decks & patios workEverything we build in Valley Glen
Decks & Patios in Valley Glen: questions
Water and soil together set it. On a Valley Glen lot with grade, the engineer sizes footings from the soil report and places them in firm ground, sometimes as drilled piers. Drainage keeps runoff from collecting at the holes. LADBS inspects each excavation before concrete is placed.
Fire rules depend on where the parcel falls on the hazard map, which we confirm first. Unmapped Valley Glen lots use the general code. On a mapped lot the boards need an ember rating and the underside of the frame is closed in or kept clear, and an enclosure then needs drainage of its own.
Footprint and height are priced apart, with drainage as a third item. Area prices boards, joists and railing. Height prices the posts, the bracing and the depth of each footing. Downspout piping, a dry well and channel drains are each listed, so the water plan is visible in the price.
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Tell us about the lot and the job. A builder replies by phone or email to set up a visit.

