Why does the number of shingle layers change the job?
Each old layer of shingles must be removed before a new roof can be laid on a sound deck, so two layers take more labor and produce more debris than one. The count of layers is recorded in the survey because it changes both the scope and the disposal.
The crew counts the layers by lifting a corner at the eave and at the rake. A second layer adds nails that must be pulled, and it can hide a deck problem that only shows once the top layer is off. The crew does not guess the count, and it writes the number into the scope.
Removing more layers also means more weight to carry down the roof and more care for the gutters and the plants under the eave. The crew plans the drop zone and the debris route before the first shingle is lifted.
What does a roof deck need before new shingles go on?
The deck must be flat, dry and sound, with boards that hold a nail. Soft, split or stained boards are replaced before the underlayment goes down, because a shingle nailed to a weak board fails at the first hard wind.
A technician walks the deck and taps each board to find soft spots. Stains on the underside in the attic show where water has been, and a board that is darker than its neighbors may be holding moisture that the new roof would trap.
Replacing a board is a small job in itself. The crew cuts the damaged piece back to a solid rafter, fixes the new board and checks that the nail line runs true, so that the shingles sit flat across the whole slope.
How are shingle profiles and colors matched on an older roof?
An older roof may use a shingle that is no longer in production, so an exact match is not always possible. The crew compares the thickness, the exposure and the color under the same light and shows the homeowner the nearest option before the job is set.
Color changes with age. Sun fades the granules on the old roof, and a new shingle will look darker or brighter for a period even when it is the same product. The crew explains this and shows a sample on the roof where that is possible.
Where a full match is not possible on one slope, the crew discusses the options, such as replacing the whole roof for an even look, or replacing one slope and accepting the difference. The choice is the homeowner's, and it is made in writing.
Does the underlayment matter under a shingle roof?
Yes. Underlayment is the water barrier between the deck and the shingles, and it carries water off the roof where a shingle has failed or where wind has driven rain under the edge. It also protects the deck during the work and while the new roof is still being finished.
Underlayment is laid in overlapping courses so that water runs down and out over each lap. Where the roof meets a wall, a valley or a chimney, the underlayment is turned up and sealed so that the water has no path under the joint.
The crew checks the underlayment at the edges and the valleys before the shingles go on, because a missed lap or a torn sheet is hard to see once the roof is covered.
What affects the scope of a shingle replacement in Fontana?
The scope turns on the roof area, the pitch, the number of layers, the deck condition, the ventilation and the access. The price is explained and approved before any work begins, and no figure is printed on this page.
Pitch changes the safety plan and the speed of the work. A steep slope needs harnesses and a crew that moves carefully, and a complicated roof with many valleys and dormers takes more cutting and more flashing work.
Ventilation is part of the same scope. A new shingle roof sits over the attic, and a crew that checks the attic vents at this point can say whether the ridge or the eave vents need work. That check is quoted as a separate line so it is clear what is being done.