Shingle Roof Replacement in Montrose

It is allowed up to a limit and it is usually the wrong call on a roof this age. An overlay hides the deck, adds weight, and sits on a surface that is no longer flat, which shortens the life of the new covering. Check the layer count at the rake before anyone quotes you an overlay.

Look at the field rather than the failure. Composition here tends to go across a whole slope at once -- granules gone, tabs brittle, seal lines broken -- rather than in patches. A bald section on an otherwise sound slope is a repair; a whole slope like that is a replacement.

It is a real rule and it is not California's. Several states apply a 25% threshold, above which a repaired roof has to be brought up to current code. California uses 50%: replace more than half the total roof area within any one-year period and the whole roof has to comply. If you have read about the 25% rule, that is why it does not match what a Glendale contractor tells you.

If the property is identified as historic, yes -- roof form and roof cladding are explicitly within scope. The part that catches people out is the order: a Design Review Exemption has to be approved BEFORE a building permit application will be accepted, not at the same time. Check your own address with the City of Glendale before anyone specifies a covering.

Not automatically. Age is a prompt to look, not a verdict. Composition at twenty years is usually near the end; clay tile at twenty years has decades left in the tile even if the felt underneath is finished. That distinction is most of the roofing decisions made in this city, and it is settled by a survey rather than by the calendar.