Water is the biggest enemy of any house. It does not need a storm to cause damage, because a steady trickle in the wrong place can rot trim, stain siding, and soak the soil around your foundation over time. The good news is that most water problems are easy to spot if you know where to look. Think of this guide as a walking tour of your home’s outside, from the roofline down to the ground, from the team at Refined Exterior.
Why Drainage Deserves Your Attention
It is easy to underestimate how much water a roof collects. According to the U.S. Department of Energy’s Building America Solution Center guide on gutters and downspouts, a few inches of rain falling on a house roof can produce several thousand gallons of runoff. If that water is not carried away, it can saturate the soil next to the building and work its way into the foundation, where it may lead to mold and rot. A little attention to drainage protects far more than your gutters.
Stop One: The Roof Edge
Start at the top, where water first leaves the roof.
What to look for:
- Shingles at the edge that are curled, cracked, or missing
- Drip edge (the thin metal strip along the roof edge) that is bent or absent
- Fascia boards that are stained, soft, or peeling
- Water stains on the underside of the roof overhang
Why it matters: Water that sneaks behind the gutter can rot the fascia and the roof deck underneath.
Stop Two: The Gutters
Gutters collect that water and direct it to the downspouts.
What to look for:
- Leaves, seeds, and grit filling the channel
- Sagging or pulled-away sections
- Standing water after rain, which can mean the gutter is not sloped correctly
- Rust, cracks, or leaking seams
- Stains on the siding beneath the gutter, which suggest overflow
The Department of Energy guide says gutters should be installed along the roof eaves with a slope of at least one sixteenth of an inch per foot of run, so water flows steadily toward the downspouts. It also notes that gutter channels come in several sizes and that a larger size can carry more water faster, as long as there are enough downspouts to drain it.
Stop Three: The Downspouts
A downspout that is too short, clogged, or detached makes the whole system useless.
What to look for:
- Downspouts that have come loose from the gutter or the wall
- Elbows or sections that are crushed or blocked
- Water pouring out right beside the foundation
- Not enough downspouts for a long gutter run
The guide recommends spacing downspouts about 20 to 50 feet apart along the gutter, and allowing roughly one square inch of downspout cross-section for every 100 square feet of roof area. It says closer spacing lets the system handle more water during heavy storms.
Stop Four: Where the Water Lands
This is the most overlooked stop on the tour.
What to look for:
- Pooling water or soggy soil near the foundation after rain
- Soil washed away at the base of a downspout
- Mulch or soil piled against the siding
- Ground that slopes toward the house instead of away
The Department of Energy guide says downspouts should end at least 5 feet from the foundation, or connect to an underground system located at least 10 feet away, and that the final grade should slope away from the building. A simple splash block or a downspout extension can make a big difference where water currently lands too close.
Stop Five: The Siding and Trim
Siding is built to shed water, but it cannot handle constant splashing or soaking.
What to look for:
- Stains or streaks below gutters, windows, or roof edges
- Peeling paint, bubbling finish, or soft wood trim
- Cracked caulk at corners, windows, and door frames
- Siding that sits too close to the ground
The guide points out that, for homes without gutters, siding should be kept at least 8 inches above the ground, and the foundation or cladding should protect the wall from splash. It also notes that in climates with heavy rainfall, extra measures like kick-out flashing (a small diverter where a roof edge meets a wall) help keep high water volumes from running down the wall.
Stop Six: Windows, Doors, and Penetrations
Every opening in the wall is a place water can try to enter.
What to look for:
- Failed sealant around frames
- Stains on interior walls or window sills
- Loose or missing flashing above windows and doors
- Gaps around vents, pipes, and cables
Small gaps here are easy to fix early and costly to repair after water has done its work.
Sorting the Fixes: Who Should Handle What
Homeowner-friendly jobs:
- Cleaning gutters and downspouts safely from a stable ladder, or hiring someone to do it
- Adding downspout extensions or splash blocks
- Pulling mulch and soil back from the siding
- Re-caulking small gaps in good weather
- Trimming branches that drop debris into gutters
Call a professional for:
- Sagging or detached gutters that need reattaching or replacing
- Fascia or soffit rot
- Roof edge repairs and drip edge installation
- Persistent overflow even after cleaning
- Flashing and kick-out problems
- Siding replacement or rot repair
- Regrading or underground drainage solutions
Safety matters here. Ladders and roof edges are a leading cause of home maintenance injuries, so if you are not comfortable working at height, hire a pro.
A Seasonal Rhythm That Works
Water management is easiest as a habit.
- Spring: Check for winter damage, flush gutters, and test downspouts with a hose.
- Early summer: Inspect caulk and sealant, and clear plant growth that touches the siding.
- Fall: Clean gutters after leaves drop, and recheck the grade around the foundation.
- After major storms: Walk the house and look for loose parts, new stains, and pooling water.
Signs It Is Time to Call
Bring in a qualified exterior contractor if you notice:
- Water stains on ceilings or walls
- Peeling or bubbling paint that keeps returning
- Gutters that overflow in moderate rain
- Soft spots in trim or fascia
- Soil erosion or pooling near the foundation
- Musty smells in the basement or crawlspace
Final Thoughts
A home exterior works as a system, and water ties every part of it together. Check the roof edge, gutters, downspouts, landing zones, siding, and openings once or twice a year, and you will catch most problems when they are small and inexpensive. Keep the water moving away from the house, and the rest of your exterior will last much longer.