Every quote for seamless gutter installation in Lakewood arrives with a size already on it, 5-inch or 6-inch, and most people take whatever the paperwork says. The install page settles it in one line: the house tells you the size. This is the long version of that line, the part you can check yourself before anyone shows up to measure.
Do I need 6-inch gutters?
Only if a lot of roof drains into one run and the water has a long way to go before it finds a downspout. Three things set that: how big the roof plane above the run is, how steep it is, and the distance from the far end of the run to the nearest outlet. Most Lakewood bungalows and small colonials never clear that bar. Doubles often do.
Roof area is the obvious half of it. A wide, tall plane of shingle sends more water into the trough below it than a short one, and on a two-and-a-half story house the planes are both.
Pitch is the half people skip. A steep roof delivers its water fast and throws it out past the shingle edge instead of dribbling off, so the trough underneath sees the whole storm in a shorter window. The same roof area on a low-slope porch roof arrives slower and gentler. This is why two houses with similar square footage can behave nothing alike in a July cloudburst off the lake.
Then there is travel. Water that lands at the far end of a long run has to move the entire length of the gutter to reach the outlet, and it does that on whatever pitch the installer gave the run, which is not much. A gutter is a slow pipe. The longer the trip, the deeper the water gets by the time it arrives at the corner where everything else is already arriving.
Valleys break the rule in the other direction. Where two planes meet and funnel into one short stretch of gutter, capacity stops being about the whole run and becomes about that one spot, which can be a couple of feet of trough taking two roofs at once. A modest colonial with one valley aimed at one corner can need more gutter than a bigger house with none.
How do I tell what drains into one run?
Stand across the street, or on the far side of the shared drive, and take the house one run at a time. Follow what sits above each gutter back up to the ridge. You are counting the plane that feeds it, anything that funnels or dumps into a short section of it, and the places the water is allowed to leave.
What to look for on a Lakewood house:
- Valleys, and where each one lands. A valley pointed at a corner is the single strongest argument for upsizing that run.
- The porch roof. Many doubles run the porch roof water into the main system rather than giving it its own path to the ground, which means the front run is carrying both.
- Any dormer, because its own small roof sheds onto the plane below it and the gutter under that plane gets the dormer’s share too.
- The front run on a double. Two units, one continuous gutter across the whole front, and frequently one downspout at each end doing all of it.
- How many downspouts each run has, and where they sit. A long run with a single outlet is the setup that overflows, whatever size the trough is.
Something that helps and costs nothing: look at the ground under the gutter line on a dry day. A strip of washed-out mulch, a scoured line in the gravel of the shared drive, or moss on the foundation below one spot marks where water has been leaving the system for a while.
If it already spills, the location of the spill narrows the cause before size enters the conversation, and where the water comes over sorts that out. Sizing is what you do about the one cause that cleaning and re-pitching cannot fix.
What does a 6-inch gutter change?
Two things, and the second does most of the work. The trough is wider, so it holds more before the front lip becomes the overflow route. And 6-inch is hung with a 3-by-4 downspout, a bigger exit than the one that comes on a 5-inch run. Capacity in a gutter system is mostly a question of how fast water can get out.
The bigger outlet has a side benefit through a Lakewood spring, because the maple mat that seals an outlet in May takes longer to bridge a wider opening. That is margin, not a guard, and the cleanings still happen.
The trade is on the fascia. A 6-inch face is visibly deeper, and on a small bungalow with a low eave and slim trim it reads heavy, the way a K-style run reads on a house built for half-round. On a double where the main gutter sits 25 to 30 feet up, nobody on the sidewalk can tell.
When is a second downspout the better fix than a bigger gutter?
When the run is long and only has one way out. Cutting a second outlet near the far corner and dropping a downspout there halves the distance water travels inside the trough and gives the run another exit, which is most of what upsizing actually buys. It is also repair work on the gutter that is already hanging there.
That fix needs somewhere for the water to go, and on these lots that is the catch. The shared-driveway side of a double is often the only place a new downspout could land, which puts it on concrete a few feet from the neighbor’s wall, or over a basement window well, or in the path a car takes every night. Front elevations have their own problem: the honest spot is frequently the middle of the porch face.
Underground tie-ins complicate it further, because a lot of those lines here were run into old clay and are already slow. Adding a second pipe to a drain that backs up at grade moves the problem rather than solving it. The gutter repair page covers the downspout and pitch work, including what happens when the buried line is the actual limit.
Where the far corner has no landing spot, 6-inch wins by default. Same answer if the existing run is at the end of its life anyway, in which case the size question folds into a replacement decision the seamless page lays out rather than a repair.
Is half-round on a colonial or a Clifton Park house a size question?
No. Half-round is a profile, meaning the shape of the trough, and it gets chosen for the houses that hung half-round on brackets when they were built. It comes in sizes too, but the first decision on those houses is the roof edge and how it should look, and capacity is worked out afterward within that choice.
The argument for it, and where a K-style run on a Craftsman looks like what it is, is already on the seamless gutters page. No point making it twice.
What do 5-inch and 6-inch gutters cost installed in Lakewood?
Seamless 5-inch aluminum installed with downspouts runs $9 to $14 per foot here. Seamless 6-inch with 3-by-4 downspouts runs $11 to $17 per foot. The gap per foot is narrow enough that upsizing the one elevation that overflows is small money, and wide enough that upsizing every run on the house is a different decision. That is why the size question usually gets settled run by run.
For whole-house numbers, a colonial with about 150 feet of gutter in 5-inch lands around $1,400 to $2,100 with downspouts, and a double with two full systems runs $2,200 to $3,500. Half-round aluminum on brackets is its own tier at $18 to $28 per foot. A downspout extension to grade or a tie-in to an existing drain is $40 to $120 each. The rest of the table, including repairs and cleanings, is on the gutter cost page.
Adding an outlet and a downspout to a run that stays put is priced with the repair work, not by the foot, so it comes in as a repair-sized number rather than an installation-sized one. Worth getting both written down before deciding.
The Lakewood houses that almost always end up in 6-inch
Four kinds of house come up again and again once someone has counted what drains where. What puts them on the list is shape, not age or price.
The two-and-a-half story double with one continuous front run. Two units, one gutter, the tallest wall on the street, and usually a downspout at each far end with nothing in between.
The brick colonial with a valley aimed at a corner. The run can be short and the roof unremarkable, and it still overflows at that corner in every hard rain, because two planes are emptying into a few feet of trough.
The house under one big unbroken plane with a single downspout. Often a rear elevation nobody looks at, draining a full side of roof through one pipe in the corner.
The house where the porch roof was tied into the main system. The front run carries its own plane plus the porch, and the porch contribution arrives at the exact stretch that is already deepest.
If your house is on that list, walk the run with the fewest outlets and count them. That length and that count are what the size argument is actually about.