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How clean is clean enough
Needles on a rated roof are still fuel. IBHS Base wants the covering, the gutters, and the 0–5 foot band kept clear of vegetative debris, and it names pine needles in the 5–30 foot cleanup list. FEMA P-737 says clean roofs, gutters, joints, and fence lines, and inspect bird stops every year. Oregon R327 does not print a needle depth. A Class A letter does not mow the roof.
You are on a ladder after the first fall wind. The valley is full. The five-foot gravel has a brown film. That is the job.
DET-007 lives on gutters. This page is how clean. Do not use a house-level hub graphic as a rake spec.
Why it matters
Embers land on debris, not on the shingle class. IBHS scores maintenance every year. See Class A is not a service-life clock.
How the documents split
| Surface | IBHS Base | FEMA | R327 |
|---|---|---|---|
| Roof | Kept clear of vegetative debris | Remove debris | Class B assembly floor. No needle rule |
| Gutters | Maintained clear | Remove debris | Noncombustible plus an approved means to prevent accumulation |
| 0–5 ft | No vegetative debris | Foundation-to-ground joints | Not a planting section |
| Bird stops | (covering clear) | Inspect annually | Profile-gap sentence is construction |
This page does not invent “90 percent clean” or a remaining-needle inch.
The paths
1. IBHS. Clean the named surfaces. Repeat annually.
2. Oregon construction. Spec the gutter material and the guard. Raking is still good practice. It is not R327.3.5.
3. Tile roofs. Debris under tiles is why bird stops exist. See tile bird stops.
What people mix up
- Class A as a skip of raking.
- R327.3.1 as a weekly checklist.
- A pine forest lot as an excuse to skip the five feet.
How to check
- Look at the valleys, gutters, and five-foot band.
- Name IBHS vs construction.
- If you have bird stops, are they still in place.
Limits
This page does not spec a crew. FireApproved is not the AHJ. IBHS is a designation.
Related records
Questions
Do I have to remove every pine needle?
IBHS Base requires the roof covering kept clear of vegetative debris, gutters clear, and the 0–5 foot zone to mineral soil, including routine removal of leaves and pine needles in the 5–30 foot band. This page does not invent a remaining-needle percentage. Clean means the surfaces the standard names are not a fuel bed.
Does a Class A roof make needles OK?
No. Class A is a lab assembly. IBHS still scores debris. See Class A is not a service-life clock.
Is this Oregon R327?
No. R327.3.1 wants gutters, where provided, of noncombustible material with an approved means to prevent accumulation. That is a product and a guard, not a weekly raking rule.