Yes by the pail, no by the gallon. At roughly $30 to $48 a gallon it is the cheapest honest way into the Benjamin Moore exterior deck: 350 to 450 sq ft a gallon, a four-hour recoat, dealer tinting, and one pail that covers wood, fiber cement, siding, stucco, and primed metal on a mixed building. It also applies down to 40°F surface temperature, which buys back cool spring and fall mornings. On your own house in a deep color on a south wall, it is the wrong rung.
Spec Sheet
- COVERAGE
- 350–450 sq ft / gal
- SHEENS
- Flat (W447), Low Lustre (W455), Satin (W448), Soft Gloss (W449)
- TOUCH DRY
- 1 hr
- RECOAT
- 4 hr at 77°F / 50% RH
- APPLICATION TEMP
- 40–100°F surface temp
- FILM BUILD
- 3.6–4.6 mils wet · 1.3–1.6 mils dry
- VOC
- Under 50 g/L (Gennex colorant)
- PRIMER
- Self-priming on concrete and fiber cement; prime bare wood, bleeding cedar or redwood, masonry over pH 10
- SURFACES
- Wood, fiber cement, hardboard, vinyl and aluminum siding, shakes, unglazed brick, stucco, concrete, primed metal
- WARRANTY
- Limited Lifetime
- SIZES
- Gallon, 5-gallon
- PRICE
- $30–48 / gal at BM dealers; the 5-gallon lowers per-gallon cost
Dry Times and the 40-Degree Rule
Four hours to recoat, measured at 77°F and 50 percent humidity. On a paid job that number is the schedule: body-coat a wall in the morning, hit the second pass the same afternoon. Cool, damp mornings stretch it, and chasing the four-hour number on a 45-degree wall with dew still on it is how you buy a soft film. The 40°F rating is a surface temperature, not the air temperature at noon. A 45-degree morning with dew on the siding is not a paint-able wall yet — wait for it to dry and warm. Paint it too cold and the film never coalesces properly. It stays soft and chalks early, and no warranty covers that.
When It Goes Wrong — and How to Fix It
Pigment on your palm when you run a hand down the wall
Why it happens: That is chalking, and it is the honest ceiling on this product. A deep navy, a barn red, or a forest green on a south or west wall loses saturation and starts to chalk before Regal Select does and well before Aura. The resin is a volume resin, not a color-lock resin.
The fix: There is no fix on the wall you have — wash, prep, and recoat. For the next one, keep this line to light-to-mid colors and moderate exposure. If the dark color is the whole point of the job, step up to Regal Select Exterior or Aura Exterior and stop trying to buy it cheap.
The film stayed soft and chalked in the first season
Why it happens: Almost always applied too cold. The rating is 40°F surface temperature, and people read the forecast high instead of the wall. Paint a cold, damp wall and the acrylic particles never coalesce into a continuous film.
The fix: Check the siding, not the sky. Wait for the surface to dry and warm past 40°F, start after the dew has burned off, and stop early enough in the afternoon that the coat sets before the temperature drops. Soft film has to come off and go back on right.
Brown tannin ghosting through on cedar or redwood
Why it happens: Self-priming is a coverage claim for the easy case — sound previously painted siding, poured concrete, fiber cement. It is not a substrate claim. Cedar and redwood extractives are water-soluble and migrate straight up through a waterborne film.
The fix: Hit knots and bleeding boards with a stain-blocking primer before the first coat. Prime bare wood generally, and use a masonry sealer on masonry over pH 10. Prime once now or repaint the elevation in a season.
Color drifts across a long elevation, or you run out mid-wall
Why it happens: It is a dealer-only product — no Home Depot, no Lowe's — and the contractor lines are not always racked out front. Running a gallon short on a Sunday is a drive, not a five-minute run, and a fresh gallon tinted separately can read slightly different against the one next to it.
The fix: Buy about ten percent more than the calculator says, and have the dealer box and mix the 5-gallon pails together so the color stays consistent across a long wall. Ask at the contractor counter if the pail is not on the shelf.
Application Settings That Work
- BRUSH
- Fine for a contractor paint, not buttery. It is a notch below Regal Select's flow under a sash brush, so cut with shorter passes and expect to reload a little more often on long trim.
- AIRLESS
- Sprays clean and back-rolls even, which is how you get the mils onto a big elevation fast. Spray and back-roll is the standard move on a whole-building repaint.
- PRIMER
- Self-priming on sound previously painted siding, poured concrete, and fiber cement. Prime bare wood, use a stain-blocking primer on bleeding cedar or redwood, and seal masonry over pH 10.
Ultra Spec Exterior vs Regal Select Exterior vs Aura Exterior
Three rungs, three jobs. Match the rung to how long the wall has to last and how hard the sun hits it — not to what the counter is pushing that week.
| Ultra Spec Exterior | Regal Select Exterior | Aura Exterior | |
|---|---|---|---|
| Price per gallon | $30–48 | $55–70 | $85–100 |
| Color retention on deep tones | Light-to-mid tones hold fine. Deep colors fade and chalk first on a south or west wall. | Holds a mid-tone through a full repaint cycle. | Color-lock resin. The longest hold money buys at homeowner grade. |
| Resin and film | Volume resin, 1.3–1.6 mils dry. Resists peeling and blistering in normal exposure. | Alkyd-modified resin that grips chalky old siding and stays elastic through a real winter. | Premium color-lock resin, the toughest of the three. |
| Freeze-thaw and lap-joint cracking | Normal acrylic behavior. Nothing special. | The reason to step up here — fewer lap-joint cracks at year three. | Premium flexibility as well. |
| Brushability on trim | A notch below Regal's flow. | Smooth under a sash. | The best brushability in the lineup. |
| Low-temp application | Rated to 40°F surface temperature — genuine value at this price. | Standard exterior window. | Applies colder still than Ultra Spec. |
| Pick it when | Rentals, apartment and HOA bodies, high volume, light-to-mid colors, cool-weather windows. | Your own house, chalky or hard-to-coat siding, real freeze-thaw winters. | Forever home, deep saturated color on a sunny wall. |
If you are painting for a tenant cycle or an HOA directive in a light-to-mid color, Ultra Spec Exterior is the right dollar and the 5-gallon pail is the right size. If it is your own house with real winters or chalky old siding, the $20 to $30 a gallon step up to Regal Select Exterior buys adhesion and freeze-thaw flex you will actually notice at year three. And if the whole point is a deep, saturated color holding on a baking wall for a decade, that is Aura's wall — buying the budget line for that job is a false economy and you will be back on the ladder sooner.
What It's Good At
- +Dollar-per-square-foot — the cheapest honest door into the BM exterior deck and dealer tinting
- +The 40°F surface-temp window, which buys back cool spring and fall mornings
- +A four-hour recoat, so a body coat in the morning takes its second pass the same afternoon
- +Covering wood, fiber cement, hardboard, vinyl, aluminum, shakes, brick, stucco, concrete, and primed metal from one pail
- +A mildewcide in the film for shaded north walls
- +5-gallon pails that drop the per-gallon cost on a whole-building repaint
What It's Not Good At
- −Deep colors on a south or west wall, which lose saturation and chalk early
- −Film toughness — 1.3 to 1.6 mils dry is a volume coat, not a forever coat
- −Matching the interior Ultra Spec 500's zero-VOC story; the exterior runs under 50 g/L
- −Brush flow on trim, a clear notch below Regal Select
- −Availability — dealer only, and sometimes a counter ask rather than a shelf grab
Honest Alternatives
The big-box play. Every Home Depot stocks it, tinted on the spot, no dealer drive, and the price lands at or below Ultra Spec. You give up the BM resin quality and the dealer-matched 5-gallon batching that keeps a long wall from drifting between cans.
Same brand, same dealer, plus the adhesion and freeze-thaw flexibility Ultra Spec does not have. The alkyd-modified resin grips chalky old siding and stays elastic through a real winter. About $20 to $30 more a gallon, and the clear step-up for a house you own.
The value specialty pick if you want a strong one-coat claim off a Saturday-afternoon shelf. It will not match Aura's deep-color hold over ten years, but its early hide and dirt-shed are real and big-box availability is the whole point.
Ultra Spec Exterior Questions, Answered
Is Ultra Spec Exterior worth it?
By the pail, yes. At roughly $30 to $48 a gallon it is the cheapest honest way into the Benjamin Moore exterior deck, it applies down to 40°F surface temperature, it recoats in four hours, and one pail covers wood, fiber cement, siding, stucco, and primed metal on a mixed building. It is not worth it on your own house in a deep color on a south or west wall — the film runs 1.3 to 1.6 mils dry and loses saturation and chalks before Regal Select Exterior or Aura do.
Ultra Spec Exterior vs Regal Select or Aura — when is the budget line fine?
When the wall is light-to-mid color, the exposure is moderate, and you reload it on a tenant cycle anyway. Rentals, apartment bodies, HOA repaints, a lot of square footage fast — Ultra Spec Exterior is the right dollar. The minute the job is a deep color on a baking south wall you want to hold ten years, step up. Regal Select or Aura earn the gap there.
How cold can I apply it?
Down to 40°F surface temperature, per the data sheet, with a 40 to 100°F window. That is the all-weather pitch and it is real for the price. But it is not colder than the premium BM lines — Aura Exterior applies colder still. And 40°F is the surface temp, not the air temp at noon. A 45-degree morning with dew on the siding is not a paint-able wall yet. Wait for it to dry and warm.
Does Ultra Spec Exterior need a primer?
On sound, previously painted siding and on poured concrete or fiber cement, it self-primes. On bare wood, prime first. On bleeding cedar or redwood, hit the knots with a stain-blocking primer or the tannin ghosts through in a season. Masonry over pH 10 wants a masonry sealer. Self-priming is a coverage claim for the easy case, not a substrate claim for yours.
How far does a gallon go?
350 to 450 sq ft, and that range is honest. It hides well on a same-color repaint. A color change still wants two coats no matter what the can implies, so buy about ten percent over the calculator so you are not chasing a partial gallon mid-wall.
Does it come in satin?
Yes. Four sheens: Flat (W447), Low Lustre (W455), Satin (W448), and Soft Gloss (W449). Low Lustre is where most siding bodies land, and Soft Gloss is the usual trim choice. Ask the dealer which sheens they stock in the 5-gallon before you plan the job around one.
Is Ultra Spec Exterior the same as Ultra Spec 500?
No. Ultra Spec 500 is the interior wall paint; this is its exterior twin, same brief, outside. One difference matters: the interior 500 holds 0 g/L at any color, while the exterior runs under 50 g/L. Low and compliant, but not the same zero-VOC headline.
Is the Limited Lifetime Warranty worth anything?
It is a fair signal that the resin is not bottom-shelf, and it is a paper promise that lives and dies on your prep. No warranty covers a coat that peeled because nobody scraped, washed, or waited for the wall to dry. Treat it as a tiebreaker, not a reason to skip prep.
Where do I buy it?
Benjamin Moore dealers, including many Ace Hardware stores that carry the brand. It is not stocked big-box, and the contractor lines are not always racked out front — ask at the counter for the 5-gallon. On a whole-building job have the pails boxed and mixed together so the color does not drift across a long elevation.
Ask a Question