Mildew & Mold Treatment Boston

Your trusted experts

A Ryan Painting crew member wearing a Ryan Painting shirt repaints trim after mildew was removed from the front porch on a two-family home in Roslindale.

Stop mold in its tracks before you paint—or after.

Mildew and mold don’t just look bad—they destroy paint adhesion and can lead to rot. Whether prepping for painting or maintaining your exterior, treating mold properly is essential.

Ryan Painting performs mold and mildew removal using biocide solutions and sealant primers in homes across Dorchester, South Boston, and Hyde Park.

  1. Apply biocide wash and let dwell

  2. Light scrub or rinse

  3. Apply mold-sealing primer (if painting follows)

  4. Optional topcoat application

Typical Cost

Mildew and mold treatment services typically cost $300–$1,200 depending on extent and surfaces.

Case Study

A Jamaica Plain homeowner had black mildew around their shaded front porch. We treated, washed, primed and repainted, stopping the issue from returning.

Front porch in Jamaica Plain, recently washed and rid of mildew before priming and painting project on siding and decking.

FAQs

Can I paint over mildew?

Only after treating—otherwise it will bleed through.

Is this safe to do with kids or pets around?

 Yes—we use low-toxicity products and provide guidance for safe reentry.

More services, same quality

 Let’s stop mildew before it spreads—book your treatment today.