Once, and it stays with the house
The warranty moves with the property. It transfers one time, to the next owner, so a roof treated five years ago is not starting from nothing when the house changes hands.
One transfer is a real limit: the cover follows the house through that first sale, and the buyer benefits from what remains. The mechanism is paperwork rather than goodwill: written notice within 30 days of the sale, with the original contract attached.
Why it matters when you sell
A roof is one of the things a buyer inspects and one of the things they negotiate over. A treated roof with a registered warranty and a known coverage term is a different conversation from a roof that simply looks tired.
It also answers the question a buyer will ask anyway: how much life is left in it. The band the roof scored and the term that was issued are the answer, in writing, rather than an opinion from either side of the table.
Registration is what makes it real
The warranty must be registered within 30 days of the treatment. We register it after the work is done, so in practice you are not chasing anything, but the window is part of the terms and it is why the paperwork is handled at the end of the visit rather than later.
If you are buying a house with a treated roof, ask for the registered terms and the coverage band. If you are selling, that is the document to have ready.
What transfers, and what does not
What transfers is the remaining written coverage on the treated surface: the term and its shape, full coverage every year on a two-coat build, or full coverage and then reducing on a single application.
What does not transfer is anything the warranty never covered: general wear, storm damage, or a roof that was already failing. The exclusions travel with the document, and they apply to whoever owns the house at the time.
What a buyer should ask for
If you are buying a house with a treated roof, ask for the registered warranty terms and the condition band the roof scored. Together they say what was applied, when it was registered and how the cover behaves across the years that are left.
If you are selling, gather the same two documents before the listing goes live. It is a short piece of paperwork, and it answers a question a buyer would otherwise raise at the inspection.
The rest of the terms in brief
The remedy runs in three steps: a free inspection, then a free re-treatment, then a roofing material allowance if the re-treatment does not resolve it.
There is a 20% price lock on a future re-treatment, so the roof can be treated again as it ages without starting from a fresh price. An insurance certificate is available on request. And coverage depends on the condition score at assessment, with exclusions applying.