Room Additions in Sun Valley
Room additions in Sun Valley with a written drainage plan for concrete flatwork, slab edges and roof water around the new room. Aspenwell.
Hard paving beside a new room can send rain straight at the wall, and a Sun Valley addition has to account for that. A patio, driveway or walkway that runs up to the new slab edge needs a fall that leads away from the house. The plan marks where that water goes, along with the roof runoff, before the first form is set.
Flatwork next to the new slab
Existing concrete may slope toward the house, and an addition makes that plain. We check the fall of any paving that meets the new footprint and note where a cut line, a trench drain or a regrade is needed. The plans set the new slab edge higher than the finished grade by a stated amount, and a flexible joint separates it from neighboring flatwork. Where the pad has to stay as built, a shallow channel at the wall carries water to an outlet.
Roof water and the tie-in
The added roof sheds rain into new gutters, and the downspouts need a discharge point that does not wet the footing. We connect them to a solid pipe that runs out to a dispersal area or the existing drainage, and we mark the route on the drawings. Flashing at the old wall is sized for hard runoff from a storm, and the siding is held clear of the ground. The inspector sees the framing and footings before everything is covered. Both routes are shown on one sheet for the reviewer.
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Footings and walls get checked by the engineer, and the drainage plan is updated for whatever the check finds. A sound foundation can take a light upper floor. A weak one receives reinforcement first, which also changes where the slab edge sits and how runoff is handled.
Studs and the top plate at the seam are exposed, then fresh framing is fastened to them per the plans. Floor joists are matched to the old height, and flashing at the wall and roof joint is laid so rainwater runs out over the siding.
Worth considering if the sill is loose or the short walls under the floor lack bracing. The permit set can include that work, and it is quoted as its own line, so the addition itself stays on track either way.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.