What waiting actually does
Roof wear is not a straight line, and it is not reversible. Once granules have left the surface they do not come back, and once the mat has cracked through no treatment applies.
A roof that sits in the Aging band today is a roof that may be in Low in a few years, where the treatment is shorter and the cover is smaller.
The options narrow as the score drops
An Aging roof takes Revive for 10 years, or Revive with Fortify for 12 years of full cover. A Low or Critical roof takes Boost, or Boost with Fortify. Below 21 the only row is the short prorated bridge.
So the cost of waiting is partly the treatment itself, and partly the coverage that is no longer available when you get round to it.
What doing nothing is for
There are honest reasons to wait. A roof that is being replaced next spring does not need a treatment, and a house being sold as a teardown does not need one either.
The difference is between a decision and a default. Waiting deliberately, with the score in hand, is a decision. Nobody has the number in the second case.
The cheap first step
The assessment is free and it produces a score and a written estimate. That is enough information to decide to treat, to wait, or to plan a replacement.
If the honest answer is that nothing needs doing yet, that is what the visit will say.
The one thing that does not wait
Repairs. A leak that is ignored and a treatment that is deferred are not the same decision, because water works on a roof from the inside while everyone waits. If there is an active leak, that is the piece to deal with first, whatever is decided about the surface.
Everything else can be timed: a treatment, a re-treatment, a replacement. A leak cannot.
The three outcomes of waiting
Waiting has one of three endings, and only one of them is a saving.
- The roof is still in a treatable band and takes the same treatment, later
- The roof has dropped a band, so the term and the cover are smaller
- The roof has moved past treatment and needs replacing, which is the largest cost of the three
- A leak appears in the meantime, which is a repair whatever else is decided