Yes, if the nozzle is held too close or the PSI is too high for automotive clear coat. Most pressure washing companies won’t run a house-washing setup on a vehicle for exactly this reason — car detailing uses much lower pressure and different technique.

Yes, high pressure can crack panels, force water behind the siding, or strip its finish. Vinyl siding should be cleaned with a soft wash method — low pressure and the correct cleaning solution — not a straight high-pressure blast.

Concrete can generally handle real pressure, but holding a nozzle too close or using a zero-degree tip can etch or gouge the surface, especially on older or softer concrete. A wide fan tip and reasonable distance avoids this.

High pressure aimed directly at window seals or older single-pane glass can force water past the seal or crack weakened glass. Windows near a house-washing job get a lower-pressure, more careful pass than the siding around them.

Any siding material — vinyl, wood, fiber cement — can be damaged by excessive pressure, the wrong nozzle, or holding the wand too close. This is the single most common DIY mistake we see, which is why professional house washing uses soft wash technique on siding rather than high pressure.

Yes, but at low pressure with the correct cleaning solution, not straight bleach at full strength. Fiber cement can be damaged by incorrect pressure or by letting cleaning solution dry on the surface before rinsing it off.

It can improve fresh, surface-level oil stains, but deep or old oil stains that have soaked into the concrete pores often need a degreasing pre-treatment first, and even then may not come out 100%. We’ll tell you honestly if a stain looks like it’s soaked in too deep for full removal.

Standard pressure washing alone usually won’t fully remove rust staining — it typically needs a rust-specific chemical treatment (often oxalic-acid-based) in addition to washing. Straight water pressure just isn’t enough to break the iron oxide bond.

Loose or peeling paint, often yes. Fully bonded paint usually needs a paint stripper or much higher-pressure specialized equipment, and even then may leave a faint outline.

Yes, when it’s paired with the right cleaning solution applied before rinsing — plain water pressure alone knocks off visible mold but doesn’t kill the roots, which is why it often looks clean for a few weeks and then returns. A proper pre-treat-and-rinse process gets much better, longer-lasting results.

Yes, pressure washing is actually a common step in stripping old deck stain before restaining, though the pressure and technique need to match the wood type to avoid gouging softer boards.

Usually, yes, though tannin staining from oak leaves (common in neighborhoods like Riverside, Avondale, and Mandarin) can be stubborn if it’s been sitting for a long time. Fresh tannin staining comes out easier than staining that’s had months to set in.

Partially, in many cases, since brick is porous and paint can sit deep in the texture. Full paint removal from brick more often requires a specialized paint-stripping product in addition to pressure washing, not pressure alone.

High pressure can strip some sealers, especially older or failing ones, but a well-bonded, newer sealer often needs a stripping chemical in addition to pressure to fully remove.

It can, if the pressure is too high or the nozzle held too close — composite decking can scar or fuzz under excessive pressure. A soft wash approach or lower-PSI setting with a wide fan tip is the safer method for composite materials.

If it’s artillery fungus — small black or orange speckled spots, often near mulch beds — it can embed into paint and siding in a way that’s genuinely difficult to remove completely without damage or repainting. We’d rather tell you honestly that a stain falls into this category than take your money promising full removal we can’t guarantee.

Most residential jobs are priced by square footage or as a flat rate depending on the service. See our full Jacksonville pricing breakdown for exact ranges by service type.