PSW Exterior Solutions

Mold & Mildew Pre-Treatment

Heavy mold or mildew buildup sometimes needs more than a standard soft wash cycle. A pre-treatment pass breaks down growth before the main cleaning so the wash itself is more effective.

Starting at $175

Frequently asked questions

How do I know if I need this instead of a standard wash?

If siding or decking has thick, dark buildup rather than light surface staining, we'll usually recommend pre-treatment during your quote or initial walkthrough.

Is the pre-treatment solution safe for pets and kids?

Yes, once fully rinsed and dried — we follow standard dwell and rinse timing to make sure nothing lingers on surfaces.

Does this replace the regular wash, or come before it?

It's a pass before the main wash, not a replacement — it loosens heavy growth so the standard cleaning gets a fully even result.

Ready for mold & mildew pre-treatment?

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