Philadelphia weather is tough on exteriors. Humid summers grow algae and mildew, fall drops leaves into your gutters, and winter freeze-thaw cycles leave grime on concrete. So how often should you actually clean?
The general rule: once a year
For most homes in the Philly area, a full exterior wash once a year keeps dirt, algae, and organic growth from building up and protects your surfaces over time. Spring and early summer are the most popular times — you clear off everything winter left behind and head into the warm months looking sharp.
When you might need it more often
- Heavy tree cover (think Wissahickon or Mt. Airy): more shade means more algae and gutter debris, so twice a year can help.
- North-facing siding: surfaces that stay damp longer grow green faster.
- Commercial storefronts: high foot traffic and first impressions usually call for a recurring schedule.
Different surfaces, different timelines
Windows benefit from cleaning two to four times a year; driveways and patios usually look best with an annual pressure wash; roofs only need attention when moss or dark streaks appear. Bundling these into one visit is the most cost-effective approach.
Not sure where your home stands? We’ll take a look and give you an honest recommendation — the quote is always free.