Room Additions in Woodland Hills
Room additions in Woodland Hills with roof valleys, flashing and ground drainage planned to keep water away from the new footing. Aspenwell Construction.
A valley where a new roof meets the old one collects water from both of them, so it gets the heaviest flashing on a Woodland Hills addition. Down at the foundation, the footing needs soil that falls away from the wall and a path for runoff to leave the site. Water seldom arrives as a flood. It arrives as a slow stain, and the details exist to stop that stain before it begins.
Where the two roofs meet
The joint between new and old roofs is the likeliest place for a leak. We lay metal valley flashing over a self-adhering membrane, lap the shingles or tile over it, and fit a kickout where a roof edge ends against a wall. Gutters on the new roofline need leaders that lead somewhere, and that somewhere is decided on the plan. Openings for windows and doors get flashing tape lapped shingle-fashion, so water that slips behind the siding runs back out.
Water around the footing
Soil near the new foundation is shaped to fall away from the wall. A lot that slopes toward the house may call for a drain or swale, and the engineer's footing details account for it. The sill rides above the finished grade by a margin the code sets, and stucco stops short of the soil so it does not wick moisture upward. In this inland location, hard sun dries a wall quickly, but only where water has a way out.
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Room Additions in Woodland Hills: questions
Houses built on slabs and on raised floors differ here. With a slab, the footing edge is buried and we may dig down beside it to measure. With a raised floor, we can usually see the foundation from the crawlspace. Either way, the engineer reviews what we find before saying yes or specifying reinforcement.
Water gets a say in this joint. The new roof's valley is flashed with metal over a sticky membrane, and the wall wrap on the new side laps over the old. Underneath, nails and straps tie the frames. We open the connection only as wide as it needs to be and close it after inspection.
Bolts and plywood on the old walls take little extra effort while the crawlspace is exposed. Drainage matters in that conversation too, because gutters on the old roofline can be redirected along with the new ones. The permit covers the structural work and the inspector sees all of it.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.