Quick answer
Builder-grade gutters on a new Northwest Arkansas home: Most new homes here get 5 inch K-style gutters and 2×3 downspouts, the national default, and it works for a typical rain. The gap shows up in May, when a single storm can drop an inch in under an hour. A 6 inch gutter moves close to twice the water of a 5 inch, and a 3×4 downspout has twice the opening of a 2×3, so the two have to be sized together. On any new build, also get downspout water 4 to 6 feet out, because the fill dirt around a new foundation keeps settling for a couple of years. Call (479) 370-5248 or get a free quote online.
Why this comes up so often
Northwest Arkansas is putting up a lot of new roofs
A brand-new roof is where the assumption creeps in that everything under it is sized for the weather it is about to see. In a corridor building this fast, that assumption is on a lot of houses.
Centerton is the fastest-growing city in Arkansas, up 5.7 percent in a single year to 27,176 residents. Bentonville has grown 16.3 percent since 2020 and now sits above 63,000. Cave Springs is 92.5 percent owner-occupied with a median home value of $460,300, which is to say it is largely new, largely owned and largely under warranty. Across the Fayetteville, Springdale and Rogers metro, HUD counted 5,650 new sales units permitted in the twelve months ending March 2025.
That is a lot of new gutters going on near the end of a lot of build schedules. Most of them are fine. Some are close to the edge on day one, and the first May tells you which.
Builders build to a standard
Builders are not cutting corners. They are building to a default.
This gets framed unfairly, so it is worth saying plainly. The question is not quality. It is fit.
A production builder delivers a house to a spec that has to work across dozens of plans and hundreds of lots, on a schedule and at a price. Gutters go on near the end and get specified the way everything else does: to a proven, code-compliant, widely available standard. That standard is 5 inch K-style with 2×3 downspouts. It is not a defect. It is a default. The real question is whether the default matches your roof, your trees and our rainfall, and on a lot of Northwest Arkansas homes the honest answer is that it is close to the edge.
What the default usually looks like
- 5 inch K-style gutters, the national baseline size.
- The minimum number of downspouts the plan needs, often one per long run.
- No gutter guards, since nobody picks them at the design center.
- Downspouts dropping water right at the foundation, onto fill dirt that has not finished settling.
- Sectional joints on some builds, where seamless runs would have no seams between corners.
- Sizing done once for the plan, not for how your particular roof drains.
Most of that list is about capacity. The downspout discharge item is the one that quietly matters most on a new build, and we come back to it below.
Capacity in plain language
A gutter system is a pipe. Here is how big yours is.
Two things decide how much water a gutter system moves: how big the trough is, and how big the hole at the end is.
| Measure | 5 inch K-style with 2×3 downspouts | 6 inch K-style with 3×4 downspouts |
|---|---|---|
| Water held per foot of gutter | About 1.2 gallons | About 2.0 gallons |
| Gutter flow capacity | About 10.2 gallons per minute | About 19.6 gallons per minute |
| Downspout opening | 6 square inches | 12 square inches |
| Best suited to | Smaller or simpler roofs, lighter tree cover | Large roof areas, steep pitches, roof valleys, heavy canopy |
Figures are standard industry capacities at typical slope. Your actual need depends on roof area, pitch and how many valleys feed one run. Two things fall out of that table.
One inch of width is close to double the flow
People assume one more inch buys one inch of performance. It does not work that way. Going from 5 inch to 6 inch gutters nearly doubles the flow, which is why the upgrade matters so much on big roofs in a May downpour. Our gutter sizes page shows the full range.
The system drains at the speed of its narrowest point
Put 6 inch gutters on a house and leave the 2×3 downspouts, and you have built a wider trough that still drains through a small hole. Water backs up and goes over the front edge, and the homeowner decides bigger gutters did not help. The gutter and the downspout have to be sized together.
Valleys are where it shows first
A roof valley collects runoff from two roof planes and dumps it into one short stretch of gutter, which can be handling several times the water the rest of the run sees. That is why overflow so often shows up at exactly one corner while everything else looks fine. Modern Northwest Arkansas elevations have a lot of gables and a lot of valleys. The fix is often a larger downspout or an added one at that corner, not a whole new system.
Your ten minute check
The fill dirt problem, and what to check on a new house
Here is the item nobody mentions at the closing table, and a ten minute check you can do yourself before the first big storm.
On a brand-new home, the ground around the foundation is fill dirt placed during construction. It keeps settling for a couple of years, and it tends to settle toward the house. Point a downspout at that and every storm delivers a concentrated column of roof water to exactly the spot where the soil is loosest. You get erosion channels, mulch washing out of fresh beds, a low spot forming against the foundation and water pooling where you least want it. None of it looks dramatic in year one. It compounds.
The fix is unglamorous and cheap compared with the alternative: get the water 4 to 6 feet out, minimum, with extensions, or send it into underground drainage that carries it to daylight away from the house. Before the landscaping goes in is by far the easiest and cheapest time to do it. On sloped lots, our post on downspouts and drainage on NWA’s steep, wooded lots explains how to pick the discharge point.
- Count the downspouts.Long runs with a single downspout are the most common shortfall on new builds.
- Find your valleys.Where two roof planes meet, follow that line down to the gutter. That is your pressure point.
- Watch it rain.The first real storm tells you more than any measurement. Note where water spills over the front edge instead of running to a downspout.
- Follow the water at ground level.Where does each downspout put it, and is the soil there staying put?
- Check the seams.Sectional gutters have joints, and joints are where leaks start. Seamless gutters only have seams at corners and end caps.
- Look up at the trees.Not the ones on your lot today. The ones next door that will be over your roof in five years.
If everything checks out, you are done, and that is a real outcome. Plenty of Northwest Arkansas homes are fine on 5 inch gutters: smaller roof, simple hip design, open lot. When something does not check out, the answer is usually targeted, like an added downspout, a larger outlet at a valley, extensions, or a larger gutter on one run. When the whole system is undersized, we handle gutter installation with seamless runs formed on your driveway.
Want to know if your new gutters fit your new house? Call (479) 370-5248
Book a Free AssessmentLocal tip: if your home is in a community with an architectural committee, check whether gutter color or downspout changes need approval before you schedule anything. It is a short phone call that can save a redo.
Frequently Asked Questions
It depends on roof area, pitch and how many valleys feed one run. Smaller, simpler roofs on open lots are usually fine with 5 inch. Larger roofs, steep pitches, several valleys and heavy tree cover do better with 6 inch, which moves close to twice the water.
No. Builders install a proven national standard, 5 inch K-style with 2×3 downspouts, that works on a wide range of homes. The question is fit. On larger or more complex rooflines, the default can run close to its limit in Northwest Arkansas rain.
Watch a few real storms first. Water over the front of a clean gutter, one corner overflowing, or soil washing out at a downspout are worth fixing. Extending downspouts away from the foundation is worth doing on almost any new build.
That is almost always a roof valley. Two roof planes funnel into one short section of gutter. The fix is usually a larger or added downspout there, or a larger gutter on that run, not a whole new system.
It usually does not work. The system drains at the speed of its narrowest point, so 6 inch gutters on 2×3 downspouts still back up. Size the gutter and the downspout together.
Yes. We walk the roofline, count runs and valleys, look at where the water lands and tell you whether the system fits your house. If it does, we say so. Call (479) 370-5248.
Free estimates
New home in Bentonville, Centerton or Cave Springs? Let us check the gutters before May does.
Free new-construction gutter assessments and written estimates from your Springdale team. Downspouts added where valleys need them, drainage carried away from fresh fill, and seamless upgrades only where your roof calls for them.
The Brothers That Just Do Gutters · Northwest Arkansas · (479) 370-5248 · Serving Springdale, AR and all of Northwest Arkansas