Part H · the register

Sweetgum Balls and Pine Sap Belong in Your Kirkwood Roof Estimate

Sweetgum balls and pine sap collect in Kirkwood valleys and gutters, so ask each roofer to note them and price the cleanup in writing.

In Kirkwood, the trees that shade a house also drop things on its roof. Sweetgum balls, the spiked seed clusters from the sweetgum tree, collect in valleys and in the shallow pockets where two slopes meet. Pine sap lands on shingles where a pine grows near the house, and it traps needles and dirt as it dries. Neither is a reason to skip a roof job. Both change the work, and both are easy to leave out of a bid, so a homeowner who knows about them can ask for them in writing before a crew arrives.

Town roofing

Many older lots in Kirkwood have mature oaks, maples and sweetgums, and the rooflines under them stay damp longer after rain. A sweetgum ball is a hard, spiky capsule about the size of a golf ball. Once it sits in a valley, it holds water against the shingle edges. Crews who walk a roof with these balls underfoot can crush them into the surface or push them under the course above. Pine debris does a different kind of damage. Sap traps dirt and needles, and it leaves a dark patch on the shingles that a homeowner may later mistake for a leak.

The timing is the problem. Most of this material comes down in fall, which is also when roofers are finishing their season and writing estimates. The roofer who walks your roof in October sees a clean surface or a littered one, depending on the week and the wind. A bid written from one visit may not say which condition it assumed.

Check for yourself before the visit. Stand at the back corner of your lot with a phone and photograph each valley, the lowest course on each slope and the gutter line along the eave. If a pine stands within falling distance of the roof, photograph the nearest branch too, so you can show the roofer where the sap is likely to come from. A dated photo file made at the start of the season is more useful than a memory of the roof later on.

Look especially hard at the low roofs. A garage roof or a porch roof under a large tree often collects more litter than the main house, because the debris has less distance to fall before it stops. A valley at the junction of the house and garage can hold a season of material in one spot. Ask the roofer to name each of these areas in the bid, not just the house as a whole.

Debris matters beyond appearance. In a Kirkwood winter, wet litter at the eave can keep a strip of shingles cold and damp while the rest of the roof thaws. Freeze and thaw cycles then work on that strip, and ice can build at the edge where the gutter meets the roof. A clean eave and a clean valley give the new shingles a dry start, which is why the cleanup belongs in the roof scope and not in a separate afterthought.

What it costs

Clearing tree litter is usually a small line on a roof bid, but it is a real line, and it moves from one bid to the next. Some bids include a sweep and blow pass at the start of the job, before the underlayment goes down. Others treat it as general site cleanup and fold it into labor. A few leave it out and expect the homeowner to clear the gutters after the crew leaves. None of these approaches is hidden in itself. The problem is that a homeowner cannot compare two bids unless each one says which approach it uses.

There are two separate costs. The first is pre-job clearing: sweeping the valleys and the eave so the underlayment and shingles go onto a clean deck. The second is debris that was already on the roof and gets crushed into the surface or tracked across the shingles during tear-off. The second is harder to predict, because it depends on how much litter the crew finds once the old roof is open. A written bid can include clearing at a fixed count of valleys, or it can price extra debris at a unit rate with a stated trigger. Either approach can be compared. A bid that says only "cleanup" with no scope cannot be.

Sap needs its own question. Sap that has dried on the shingle surface may need a cleaning product, and that product should be one the roofer names in writing. Ask what they plan to use, whether it has been used on the shingle you are buying, and whether its cost sits in the bid or in an allowance. If the roofer says they will handle it as they go, ask for the unit price now so the number is not set on the day.

Gutter cleaning after the job is another line that many bids blur. A crew may blow the gutters as part of finishing the work, or may leave them for a separate visit. A sweetgum ball that washes into a downspout can stall an entire run, so the bid should say whether the gutters are cleared, whether the downspouts are checked, and whether that is in the roof price or priced apart.

What to ask

1. Does the bid include sweeping sweetgum balls and needles from each valley before the underlayment goes down, and how many valleys does it count?
2. If a sap film turns up on the shingles after tear-off, what does the bid say it costs to remove, and who decides whether it needs removing?
3. Will the crew clear the gutters and check the downspouts after the new shingles are on, and is that work in the roof price or in a separate line?
4. Which low roofs, such as a garage or porch, are named in the scope, so the litter on them is counted and not overlooked?
5. If the job is paused partway through a fall week, who clears the valleys and the eave before the roof is closed for the night?
6. Will you receive walk-through photos of the valleys and the eave before the first shingle goes on, and on what day?

Ask each roofer the same six questions, and write down the answers. The bids should be compared on the same debris assumptions. If one roofer counts three valleys and another counts one, the lower total may simply be the smaller scope. A written answer to each question makes that visible before a deposit is paid.

Keep your own record too. Save the photos you took before the visit, and add a second set on the morning the crew arrives. If the roofer returns to clear a valley after the job, the dated photos show what was there and what was removed. Keys Roofing can be reached at (314) 220-2333 to talk through how it handles tree litter on a Kirkwood lot, including which valleys and low roofs it would name in a written scope before any work starts.