One of the most common questions we get from Northwest Indiana homeowners is: "How often do I actually need to have my house washed?" The honest answer depends on a few factors — but if you're waiting until your siding looks visibly dirty, you've already waited too long.
The Short Answer: Every 1 to 2 Years
For most homes in Northwest Indiana, we recommend exterior cleaning every 12 to 18 months. Indiana's humid summers and cold, wet winters create ideal conditions for algae, mold, and mildew to establish themselves on siding, soffits, and trim.
By the time you can see green algae or dark streaks, the growth has already embedded into the siding's pores. Regular cleaning prevents this from happening in the first place.
Factors That Change the Timeline
Shade coverage: Homes surrounded by trees or with heavy north-facing shade may need cleaning annually. Shade retains moisture, which is the #1 driver of organic growth.
Siding material: Vinyl siding is more porous than most people think and collects algae faster than hardie board or brick. Wood siding and cedar shake need the most frequent attention.
Proximity to trees and fields: Homes near agricultural fields (common in Jasper and Starke counties) accumulate crop dust, pollen, and fertilizer residue faster than suburban properties.
Previous cleaning history: If your home hasn't been cleaned in 3+ years, the first wash may reveal staining that requires additional treatment. After that initial deep clean, annual maintenance washes are faster and more affordable.
What Happens If You Skip It?
Organic growth isn't just cosmetic — it's actively damaging your home:
- Algae and mold eat into paint and sealants, causing premature peeling and fading - Mildew can trigger allergic reactions and affect indoor air quality - Neglected buildup becomes permanent staining that even professional cleaning can't fully remove - Curb appeal drops, which directly impacts your home's market value (studies show clean exteriors can add 5-10% to perceived home value)
The cost of an annual house wash ($200-$500) is a fraction of the cost of repainting or residing your home.
The Annual Maintenance Calendar for Indiana Homeowners
Spring (March-May): Best time for a full house wash. Remove winter grime, salt spray, and pollen buildup. This is when most homeowners schedule their annual cleaning.
Summer (June-August): Peak algae growth season. If you skipped spring, get it done before the humidity makes things worse.
Fall (September-November): Ideal for gutter cleaning — get those leaves out before they cause ice dams. Pair it with a house wash if you didn't do one in spring.
Winter (December-February): Not recommended for exterior washing in Indiana due to freezing temperatures. Plan ahead and schedule for early spring.
Our Recommendation
Set a recurring annual reminder to schedule your house wash in the spring. It takes 2-3 hours, requires zero effort on your part, and protects your home's value year-round. Many of our regular customers in Valparaiso, Crown Point, and St. John schedule the same week every year — their homes consistently look better than their neighbors' because they never let buildup get ahead of them.
Ready to get on a regular schedule? Get a quote and we'll make sure your home stays clean, protected, and looking its best.
