Synthetic Composite: Costs, Lifespan and Alternatives

Trimming branches back from a Nob Hill roof removes the debris that holds moisture against the covering. Most Nob Hill roofs that fail early fail at a penetration somebody could have resealed for a few hundred dollars.

A Nob Hill estimate worth comparing itemises tear-off, disposal, underlayment, covering, flashing, permit and clean-up. The line that moves on a Nob Hill quote is deck repair, so it belongs in writing at a rate per sheet rather than as an allowance.

Nothing is left open overnight on a Nob Hill job — the deck is dried in the same day it is exposed. Flashing at every penetration is replaced rather than reused on a Nob Hill roof.

Soft spots underfoot on a Nob Hill roof mean the sheathing has taken water and needs replacing. Curling or cupping tabs on a Nob Hill roof mean the material has lost its flexibility and will not recover.

Insurance work in Nob Hill turns on documentation taken before anything is touched or tarped. Supplements are normal once a Nob Hill roof is opened up, and they should be raised with evidence attached.

Nob Hill takes its rain in short heavy bursts, so drainage that sat dry collecting debris has to move everything at once. Heat is the main ageing force on a Nob Hill roof, with surface temperatures running well above the air reading for months.

Two warranties apply on Nob Hill work — the manufacturer's on material and the installer's on workmanship. A contractor who talks you out of unnecessary Nob Hill work is the one worth calling back.

We look at the deck from inside the Nob Hill attic as well as walking the roof; half the evidence is underneath. A Nob Hill inspection starts at the flashings — chimney, vents, skylights — because they fail long before the field does.