Buy it when the repaint is genuinely mixed — a patched wall here, a glossy old door there, a few ordinary stains — and you are adding it to a Clare order anyway. It seals fresh drywall, keys onto aged oil paint, aluminum, and galvanized metal, and stops everyday stains, all at zero VOC with almost no smell. At $49 a gallon, with 225 to 275 square feet of coverage and no quart size, it is premium money for a layer nobody sees.
Spec Sheet
- COVERAGE
- 225–275 sq ft / gal
- RESIN
- Water-based acrylic (Clare does not publish the exact resin)
- BLOCKS
- Ordinary stains; conceals surface imperfections
- BONDS
- Long-lasting grip on aged oil-based paint, aluminum, and galvanized metal
- SURFACES
- Drywall, wood, stonework, plus hard-to-stick aged oil paint, aluminum, and galvanized metal — interior and exterior
- DRY / RECOAT
- Fast-drying; Clare does not publish exact times
- VOC
- Zero VOC; GREENGUARD Gold certified; ultra-low odor
- NOT BUILT FOR
- Heavy nicotine, fire smoke, set-in water rings (shellac); the slickest factory cabinet doors (a dedicated bonding primer)
- SIZES
- Gallon only. No quart, no 5-gallon
- WHERE
- Clare.com direct; free shipping over $200
- PRICE
- $49 / gal direct from Clare
When It Goes Wrong — and How to Fix It
A stain comes back through the finish weeks later
Why it happens: A waterborne film resists ordinary stains but never fully stops the worst ones. Heavy nicotine, fire smoke, and a deep reactivating water ring re-dissolve and migrate up through any water-based primer as the topcoat dries. The word that matters in the spec is slows, not stops.
The fix: Spot-prime the bad areas with a shellac primer such as Zinsser B-I-N, which dries to a tight, non-aqueous film the stain cannot travel through. Then run Clare Primer or your topcoat over everything. Do this before the topcoat is on, not after the stain has crept back.
New paint lets go on a slick factory cabinet door
Why it happens: Adhesion is a surface-energy problem. Clare's primer is rated for aged oil paint, aluminum, and galvanized metal, but the slickest factory cabinet finishes give a general-purpose resin very little to key onto.
The fix: Scuff-sand the glossiest surfaces to give the resin some tooth, or use a dedicated bonding primer like Zinsser Bulls Eye 1-2-3 Plus on cabinet doors and glossy trim. Match the specialist to the job rather than asking the all-rounder to stretch.
The finish dries duller in patches over repairs
Why it happens: Flashing. Fresh drywall and patched spackle drink water out of the wet film faster than the wall around them, so the binder there does not get the time it needs to fuse evenly. It is chemically the same paint, optically a different film.
The fix: Prime the whole surface rather than dabbing the patches, so porosity is even everywhere before the color goes on. Equalizing the substrate is the sealing job this primer does well.
You run out of primer halfway through the house
Why it happens: Coverage is a modest 225 to 275 square feet per gallon and it ships in gallons only — no quart for a single door, no 5-gallon for a big prime — so the per-square-foot cost climbs fast on a large job.
The fix: Measure against the lower number and order it all at once, since free shipping over $200 does some of the work. For a whole-house prime on a budget, a $20-to-$26 big-box gallon you can pick up today is the more sensible buy.
Application Settings That Work
- BRUSH
- Fast-drying with water clean-up and ultra-low odor, so on a sound surface you can prime and topcoat in the same working day instead of losing the project to an overnight wait.
- PRIMER
- Name the problem before you open the can. Fresh drywall and patches want sealing, which this does well. Aged oil paint, aluminum, and galvanized metal want adhesion, which it also does. Heavy nicotine, smoke, and set-in water rings want shellac spot-primed first, and the slickest cabinet doors want a dedicated bonding primer.
Clare Primer vs KILZ 2 vs Zinsser B-I-N
Primers are specialists dressed up as a commodity. Naming your wall's actual problem picks the can for you.
| Clare Primer | KILZ 2 All-Purpose | Zinsser B-I-N shellac | |
|---|---|---|---|
| Chemistry | Water-based acrylic | Waterborne primer-sealer | Shellac in alcohol, non-aqueous |
| Sealing fresh drywall | Evens porosity so the topcoat forms one film | Does the same job on a sound wall | Seals, but expensive for routine drywall |
| Bonding to slick surfaces | Rated for aged oil paint, aluminum, galvanized metal | A notch below a premium formula | Grips hard, though a dedicated bonder is easier on cabinets |
| Stain blocking | Ordinary water marks and scuffs only | Light stains | The benchmark — nicotine, smoke, set-in rings, odors |
| Odor and clean-up | Zero VOC, ultra-low odor, water clean-up | Water clean-up | It smells, needs ventilation, cleans up with ammonia or alcohol |
| Coverage | 225–275 sq ft / gal | Standard big-box coverage | Used as a spot primer, not a whole-wall coat |
| Price | $49 / gal | $20–26 / gal | About $45 / qt |
| Where it wins | A mixed repaint inside a Clare order, in an occupied room | Most walls, most of the time, for a third of the money | Any stain a waterborne film will eventually let through |
If the wall is sound and the stains are light — which covers most walls — KILZ 2 does the job for a third of the money and you can pick it up today. If the problem is nameable and nasty, buy the specialist: shellac for stains, a bonding primer like Bulls Eye 1-2-3 Plus for slick cabinet doors. Clare's Primer earns its place in the middle: a mixed repaint, an occupied house where the odor matters, and an order already crossing $200 for free shipping.
What It's Good At
- +Doing three jobs from one can on a mixed repaint — sealing, bonding, and everyday stain resistance
- +Real adhesion to aged oil-based paint, aluminum, and galvanized metal, which a plain sealer slides off
- +Zero VOC and almost no smell, unusual for what is normally the most solvent-heavy can in a repaint
- +Fast drying, so prime and topcoat land in the same working day
- +Evening out a patchy wall so the color lays down uniform
What It's Not Good At
- −Price — $49 a gallon against $20 to $30 for a perfectly good big-box primer-sealer
- −Heavy stain blocking; nicotine, smoke, and set-in water rings bleed through any waterborne film
- −Coverage and sizing — 225 to 275 sq ft a gallon, gallon-only, and a wait for the truck
- −Being the best tool for any one extreme; it is the sensible middle, not the specialist
Honest Alternatives
The opposite chemistry on purpose. Shellac dissolved in alcohol dries to a tight, non-aqueous film that locks down heavy nicotine, smoke, set-in water rings, and odors any waterborne primer eventually lets pass. It smells and demands ventilation. Spot-prime the bad areas, then prime or topcoat over everything.
A waterborne primer-sealer in the same chemical family, half Clare's price and stocked at every big-box store. It seals, hides, and bonds for general interior and exterior priming with water clean-up and same-day pickup. Adhesion and stain-blocking sit a notch below a premium formula.
A water-based bonding primer built for the slick stuff — glossy trim, previously painted gloss, tile, and metal — gripping hard with minimal prep while staying low-odor. Where Clare's is the all-rounder, this is the adhesion specialist.
Primer Questions, Answered
Is Clare Primer worth it?
Mostly only if you are already ordering Clare paint. It is a capable one-can primer that seals fresh drywall, bonds to aged oil paint, aluminum, and galvanized metal, and blocks ordinary stains, all zero-VOC and almost odorless. But $49 a gallon is premium money for a layer nobody sees, coverage is a modest 225 to 275 sq ft, and it ships in gallons only. For a sound wall, a $20-to-$26 gallon of KILZ 2 does the same everyday job.
Do I need Clare Primer before Clare paint?
Usually no. Clare Wall Paint is self-priming on a clean, sound, previously painted wall going from one mid-tone to a similar mid-tone. You want primer in four cases: fresh drywall or patched repairs that need sealing, going light over a dark color, covering a glossy or oil-painted surface, and locking down stains. On a routine refresh of a good wall, let the paint self-prime.
Will Clare Primer block water stains and smoke?
It blocks ordinary stains — light water marks, scuffs, everyday discoloration — because it dries to a tight waterborne film that slows them from migrating up into your color. What it cannot beat is the heavy stuff. Set-in nicotine, fire smoke, and a deep reactivating water ring will eventually bleed through any water-based primer. Spot-prime those with a shellac primer like Zinsser B-I-N first.
Does it stick to glossy or oil-painted surfaces?
Yes, and that is the part it does best. Clare rates it as a multi-surface bonding primer with a long-lasting grip on hard-to-stick substrates: aged oil-based paint, aluminum, and galvanized metal, the surfaces a plain sealer slides right off. Scuff-sand the glossiest factory finishes first to give the resin some tooth, and the bond holds.
How far does a gallon go?
225 to 275 square feet, which is modest for a primer, and it only comes in gallons. On a big job that means stacking cans and watching the per-square-foot cost climb. Measure against the lower number and order it all in one go so free shipping over $200 does some of the work.
What causes flashing, and does a primer fix it?
Flashing is a porosity problem. Fresh drywall and patched spackle drink water out of the wet paint faster than the surrounding wall, so the binder there does not get the time it needs to fuse evenly, and the same paint reads duller in patches. A sealing primer equalizes the substrate so the topcoat forms one uniform film. Prime the whole surface, not just the repairs.
Can I use Clare Primer outside?
Yes. Clare rates it for interior and exterior use, on drywall, wood, and stonework, plus aged oil-based paint, aluminum, and galvanized metal. The same limits apply outdoors: it is a sealer and a bonder, not a heavy stain blocker, and the worst stains still want shellac spot-primed first.
Can I prime a nursery with someone in the house?
That is the strongest thing about it. Zero VOC, GREENGUARD Gold certified, and ultra-low odor is genuinely unusual for a primer, which is normally the most solvent-heavy can in a repaint. You can prime an occupied bedroom or a nursery with a cracked window and not have to leave the house.
What sizes does Clare Primer come in?
Gallon only — no quart for a single door or a few stains, and no 5-gallon for a whole-house prime. That, plus the modest coverage, is the practical reason it makes most sense as an add-on to a paint order rather than as a standalone purchase.
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