Interior vs. Exterior Painting: What Every Saint Louis Homeowner Should Know

When it comes to painting your Saint Louis home, one of the first decisions you'll face is whether you need interior work, exterior work, or both. While both projects share the same goal — making your home look beautiful — they involve very different materials, techniques, and timing considerations.

At Mod Paint, we handle both interior and exterior painting throughout Saint Louis and surrounding areas. Here's what you need to know before you start.

Interior Painting: What to Expect

Interior painting is all about precision and livability. Prep work is critical — that means filling holes, sanding rough spots, and protecting your floors and furniture. The paints used indoors are formulated for low VOC emissions and easy cleaning, with finishes ranging from flat (great for ceilings and low-traffic areas) to semi-gloss (perfect for kitchens, bathrooms, and trim).

A typical interior painting job in Saint Louis takes 1–3 days depending on the scope. Our team works efficiently to minimize disruption to your daily life.

Exterior Painting: What to Expect

Exterior painting is more weather-dependent and physically demanding. In Saint Louis, where summers are hot and humid and winters can be harsh, timing matters. Spring and early fall are ideal — temperatures between 50–85°F give paint the best chance to cure properly.

Exterior paints are specially formulated to resist UV rays, moisture, and temperature swings. Prep work is even more critical outside — power washing, scraping loose paint, caulking gaps, and priming bare wood all happen before a single brush stroke of color goes on.

Cost Differences

Interior projects are typically priced per room or per square foot of wall space. Exterior projects are priced by square footage of the home's facade. In Saint Louis, exterior painting tends to cost more due to the prep involved and the specialized materials needed.

Which Should You Do First?

If you're planning both interior and exterior projects, we generally recommend exterior first. That way, if there are any issues with weather or the exterior envelope (rotted wood, moisture problems), you can address those before moving inside.

Ready to Get Started?

Mod Paint provides free estimates for both interior and exterior painting throughout Saint Louis City and County. Whether you're updating one room or your entire home's exterior, we'll help you plan the project and get it done right. Contact us today.