Pressure washing warranties

The chain of responsibility here surprises people. Your roofing and siding manufacturers set conditions on how their products are maintained. A cleaning contractor who ignores those conditions can create a problem that neither they nor the manufacturer wants to own — and you are in the middle of it.

So the first step is not to ask the cleaner. It is to find your own product documentation: what roofing and siding you have, and what the manufacturer's care and maintenance instructions say about cleaning methods, pressure and permitted cleaners. Polymeric Exteriors Association guidance makes clear these vary between manufacturers, so there is no general answer, only your product's answer.

This page will not tell you what any specific brand permits. Those terms change, differ between product lines, and are exactly the kind of thing that should never be paraphrased. Get the current document from the manufacturer's website or your installer's file.

Then hand it to the contractor. Ask them to work within it, and get their agreement to do so in writing alongside the surface-by-surface method and PSI. That single email converts a vague dispute into a clear one if anything goes wrong.

The contractor's own guarantee is a separate thing. Ask what they cover, for how long, and what happens if damage appears a week later. Combine that with liability insurance confirmed by the insurer, and dated before-photos of every elevation. Fixr's typical house job — $500 to $900 — is small next to a siding or roof replacement, so the paperwork matters more than the price.

How to choose

Find your product documentation first

Roofing and siding manufacturers set care and maintenance conditions. Those are your rules, and they differ between brands and product lines.

Give the contractor the manufacturer's limits in writing

Then get their written agreement to work within them. That's a five-minute email that changes who's responsible if something goes wrong.

Never take a warranty claim secondhand

If a contractor tells you what your manufacturer permits, verify it at source. Getting this wrong is expensive and it's your product, not theirs.

Ask what the contractor's own guarantee covers

Duration, what counts as their damage, and how to claim. Verbal reassurance is not a guarantee.

Keep the before-photos and the invoice together

Dated photos, the written scope, the insurance certificate and the invoice in one folder. That's your entire position if you need it.