Room Additions in Mission Hills
Mission Hills room additions with grading, weep screed clearance and crawlspace moisture control drawn into the plans that go through LADBS plan check.
A footing sits in damp soil for as long as the house stands, so the way ground water is steered around a new foundation matters on a Mission Hills addition. Soil beside the wall should drop away from the house, and the gap between dirt and the bottom of the stucco has to stay open. Those two details are drawn into the plans, and the same plans go through LADBS plan check.
Keeping soil and wall apart
Stucco or siding that touches the ground soaks up moisture and invites rot into the wood behind it. The plans keep the bottom edge of the wall above finished grade, and a weep screed at the base lets trapped moisture escape. The ground around the new room is graded to fall away, with a drain or swale where the yard is level. Because a hard storm can dump a lot of water quickly, the route for it gets planned in advance.
Water under the floor
A crawlspace needs ventilation openings and a ground cover, and a slab-on-grade room needs a vapor barrier beneath the concrete. Either one keeps damp from creeping up into framing. Where the new floor meets the old, the plans line up the vents so air moves through both parts of the space. If the ground is damp when the footing is dug, the engineer decides whether drainage rock and a perforated pipe are added around it. Both choices are small on paper and large over the life of the floor.
About our room additions serviceEverything we do in Mission Hills
Room Additions in Mission Hills: questions
The answer starts under the house. The engineer checks the footing's width and depth, the soil it bears on and the condition of the concrete. A strong base takes a second story as drawn. A weak one gets widened or supported with new posts before upper framing starts. The structural sheets show all of this at plan check.
Plans spell out the fastening: ledger bolts or screws for the floor, straps across the plates, overlapped roof rafters. Moisture protection goes in with them, including flashing at the roofs and a lapped barrier on the walls. Only the section needed is opened, and the inspector views the joint before it is covered.
A short look at the foundation shows whether bolts and bracing are missing. If they are, adding them while the area is open is tidy, and the work can sit in the same permit. The quote lists these items on their own line so they are easy to approve or defer.
Room Additions in other cities
More we build in Mission Hills
Book an inspection in Mission Hills
Describe the house and what it needs. We look at the structure first and send the quote in writing.