For most Oregon property managers running a routine restripe cycle, a 1/16-inch LDPE reusable stencil is the right pick because it pays for itself within two to four applications. Disposable cardboard stencils are only the right answer when the marking is one-time or the restripe budget will not absorb the upfront LDPE cost. The decision is almost always cost-per-application, not cost-per-stencil.
This guide breaks down the four mil-thickness grades, the cost-per-application math, and the real-world service life Cojo sees on Willamette Valley jobs.
What is mil thickness on a parking lot stencil?
Mil thickness is the gauge of the stencil material, measured in thousandths of an inch. A 60-mil stencil is 0.060 inches thick; a 1/16-inch stencil is roughly 62.5 mils; a 1/8-inch stencil is 125 mils. The thicker the stencil, the more applications it survives before edges curl, paint cures into the cut openings, and the geometry drifts off MUTCD §3B.20 or ADA Std 703.7.2.1 tolerances.
Manufacturers cluster their product lines around four standard thicknesses, plus disposable cardboard:
| Grade | Thickness | Material | Service life |
|---|---|---|---|
| Disposable | 1/16 in. or thinner | Cardboard, oilboard | Single use to 3 applications |
| Standard reusable | 1/16 in. (62 mils) | LDPE | 50 to 100 applications |
| Heavy-duty reusable | 1/8 in. (125 mils) | LDPE | 200 to 400 applications |
| Professional reusable | 1/4 in. (250 mils) | LDPE or aluminum | 1,000 plus applications |
Quick-answer table
| Use case | Best grade | Why |
|---|---|---|
| One-time layout marking | Disposable cardboard | Lowest unit cost, no storage needed |
| Single small lot, annual restripe | 1/16-in. LDPE | Pays back in 2 cycles |
| Multi-property manager portfolio | 1/8-in. LDPE | Survives transport between properties |
| Striping contractor (daily use) | 1/4-in. LDPE or aluminum | 1,000-plus application service life |
| Inspector-facing ADA wheelchair symbol | 1/8-in. LDPE minimum | Edge sharpness retention matters for compliance |
When does a reusable LDPE stencil pay back?
The cost-per-application math is the deciding factor. A typical reusable 36-inch ADA wheelchair stencil at 1/16-inch LDPE costs $45 to $95 retail. A disposable 36-inch cardboard equivalent costs $12 to $25.
| Stencil grade | Unit cost | Service life | Cost per application |
|---|---|---|---|
| Disposable cardboard | $18 | 1 application | $18.00 |
| 1/16-in. LDPE | $70 | 75 applications | $0.93 |
| 1/8-in. LDPE | $135 | 300 applications | $0.45 |
| 1/4-in. LDPE | $295 | 1,000 applications | $0.30 |
For a Springfield apartment complex Cojo restriped in March 2026, the property runs a 24-month restripe-and-seal cycle. We picked 1/8-inch LDPE for the wheelchair symbols, fire-lane word stencils, and stall numbers because the same stencils will return for the next cycle and the one after. The unit cost premium over 1/16-inch was $90 across 12 stencils -- roughly the cost of two takeout dinners against a 5-year asset.
What about edge curl and paint buildup?
Reusable stencils fail in two predictable ways: edge curl from heat and weight, and paint buildup that fills the cut openings. Both shorten service life sharply when the crew skips post-application cleaning.
Cleaning protocol that extends service life:
- Lift cleanly -- pull straight up to avoid smearing wet paint into the cut edges.
- Wipe immediately -- mineral spirits or paint thinner on a rag, applied within 5 minutes of paint application before the paint skins.
- Lay flat to dry -- never roll a damp LDPE stencil; the curl sets and never fully relaxes.
- Store flat between sheets of butcher paper -- prevents adjacent stencils from sticking to leftover paint film.
A 1/16-inch LDPE stencil with this cleaning routine survives the high end of its rated service life (100 applications). The same stencil cleaned poorly survives 30 to 50 applications.
When does disposable cardboard make sense?
Disposable stencils are the right pick in three scenarios:
- One-time layout change -- new lot configuration, renumbered stalls, or temporary construction marking
- Pop-up event marking -- carnival lots, farmer's market stalls, festival parking
- Test marking -- pilot a new symbol or layout before committing to LDPE
The cardboard stencil cost stays under $35 per piece for any standard size, and there's no cleaning, no storage, and no commitment. The downside is rough edges and inconsistent letter heights past the second application, which makes them unsuitable for ADA or MUTCD-spec markings.
Industry Baseline Range
| Stencil | 1/16-in LDPE | 1/8-in LDPE | 1/4-in LDPE | Disposable cardboard |
|---|---|---|---|---|
| ADA wheelchair, 36-in | $45 to $95 | $85 to $185 | $215 to $445 | $12 to $30 |
| Directional arrow, 4-ft | $35 to $75 | $75 to $145 | $185 to $325 | $9 to $25 |
| MUTCD letter set, 24-in | $145 to $285 | $245 to $475 | $585 to $1,150 | $35 to $95 |
| Stall number 0-9 set | $85 to $165 | $185 to $325 | $385 to $785 | $25 to $65 |
Current Market Reality
LDPE resin prices climbed 12 to 20 percent through 2025 because the broader plastics supply chain tightened. Cardboard stencil pricing rose only 5 to 8 percent in the same window. The cost ratio between disposable and reusable narrowed slightly, but the cost-per-application advantage of reusable stencils still wins for any property restriping more than once a year.
How does Cojo decide on stencil grade?
Cojo's crew uses 1/4-inch LDPE professional stencils for the high-frequency ADA wheelchair symbols, MUTCD pavement words, and directional arrows we apply on multi-property routes. We use 1/16-inch LDPE for one-off custom legends, and we keep a small stock of disposable cardboard for emergency same-day layout changes.
Property managers who want to apply their own stencils between Cojo seal-coat visits should buy 1/8-inch LDPE for any spec-compliance marking and consider 1/16-inch only for one-property single-use scenarios.
Get a stencil grade quote for your Oregon property
Cojo can sell you the right stencil for your in-house crew or apply our own stencils as part of a full-service restripe. We carry 1/16-inch and 1/8-inch LDPE in all standard sizes plus custom-cut for non-standard legends. Get a custom quote, or compare materials across applications in the parking lot stencils buyer's guide.