Painter's Caulk, Inside and Out
Siliconized acrylic latex
One siliconized acrylic that grabs wood, drywall, trim and siding, then stretches with the building instead of splitting away from it. Paintable in two hours with latex or oil base. Rated ASTM C920 Class 25 and ASTM C834, and it works outside as well as in.
10 fl oz / 300 mL · Hyper Stretch™
- 100
- 200
- 300
- 400
- 500
- 600
- 700
- 800
- 900
- 1000
From the datasheet. Seven times its own length before it breaks, and still paint-ready in two hours.
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Benefits
- Paintable in two hours
- Professional adhesion on wood, drywall, trim
- Permanently flexible after cure
- Low odor, professional-grade
- Inside and out, siding to crown molding
Product details
How to use
- Apply between +40°F and +110°F.
- Water clean-up while it is wet. Nothing else needed.
- Skin forms in 10 minutes, so tool it promptly.
- Paint after two hours, latex or oil base. Test alkyd resin paints first.
Where not to use it
From the manufacturer's datasheet.
- Apply between +40°F and +110°F.
- Not for continuous water immersion
- Not for surfaces subject to vehicular or foot traffic
- Test paint compatibility first. Alkyd resin based paints may take longer to dry over it
Allow a minimum of two hours before painting, with latex or oil base.
Documents
Elongation: 700%+ · From the datasheet
Pack Pricing
One ladder, per-tube price on every row. The ten-case tier is the floor: a quarter off, and no further.
| Pack | Order | Contains | Price | Per cartridge | Saving | |
|---|---|---|---|---|---|---|
| Single | M-PC-WHITE | 1 cartridge | $8.99 | $8.99 | – | |
| 6-pack | M-PC-WHITE-6PK | 6 cartridges | $50.99 | $8.49 | 5% off | |
| Case of 12 | M-PC-WHITE-12PK | 12 cartridges | $89.99 | $7.49 | 17% off | |
| 5 cases | M-PC-WHITE-60PK | 60 cartridges | $426.99 | $7.11 | 21% off | |
| 10 cases | M-PC-WHITE-120PK | 120 cartridges | $809.99 | $6.74 | 25% off |
- 1x
- 2x
- 3x
- 4x
- 5x
- 6x
- 700%+
Diagram, drawn to scale off the datasheet figure: the bead reaches seven times its rest length before it breaks. Not a photograph.
Compare It With The Others
Elongation at break on one scale. Pick any other formula in the line and the bars show how far each stretches from the same rest length, so a 350% bead and a 700% bead read as different here as they are in the joint. More stretch is not always the answer, which is why the facts underneath say what each one is for.
The Jobs It’s For
One siliconized acrylic, and the three jobs a painter runs it on. Inside and out, painted over in two hours.
Baseboard and trim
Before the first coatCaulk the trim out, then paint over it the same morning. Two hours is all it needs, with latex or oil base, which is what lets a painter finish the room in one visit.
Crown and casing
Interior finishCrown molding, door and window casing, and every wood-to-drywall transition where the joint has to disappear under the paint instead of showing through it.
Siding and exterior trim
Outside as readily as inIt goes outside on the same tube. Siding, exterior casing and soffit joints, through wet, heat and cold, from minus 20 to 185 degrees once cured.
Caulk for Every Interior and Exterior Application
Interior trim, baseboards, drywall transitions, window and door finishing, and siding outside. One professional-grade formula works everywhere.
- Superior adhesion to wood trim
- Flexible with wood movement
- Paintable finish
- No sagging or movement
- Handles drywall settling
- Clean wall-to-trim transitions
- Disappears into the wall
- Professional-grade finish
- Frame finishing inside and out
- Handles seasonal movement
- Low odor formula
- Paintable in two hours
- Premium adhesion to wood
- No cracking as the wood moves
- Paintable with latex or oil base
- Professional finishing detail
Why Other Caulks Fail
Other brands have unnecessarily many variations of Painter's Caulk. This confuses homeowners and contractors, and adds cost without adding performance.
Our approach:
- One formula engineered for wood, drywall, and trim adhesion
- Paintable with latex or oil base, no secondary coatings needed
- Professional flexibility handles building movement inside and out
- One application per job. Professional durability every time.
Elastomer Engineering
Elastomer content is the ingredient that keeps a caulk flexible and stops it cracking, and it is what a joint is relying on every time the building moves or the humidity swings.
Our approach: paintable in 2 hours with full elastomer strength. We engineered this formula to be fast enough for professional job sites while keeping the flexibility that lasts the life of the joint.
A word on fast-dry caulk
Fast-dry caulks get their speed by giving up elastomer. It is the part of the formula that lets a cured bead stretch, and taking it out is what lets a label promise paint in minutes. What is left dries quickly and then behaves like it: with little in the bead to carry movement, it is far more prone to cracking, and often within the first season after the paint goes on. This formula keeps its full elastomer content and is still paint-ready in two hours. Fast enough for a job site, and flexible for the life of the joint.
Why Professional Painters Use It
700%+ elongation, paintable in two hours with latex or oil base, and it goes outside as readily as in.
Grabs
Superior adhesion to wood, drywall, and trim. No sag, no movement. Professional-grade grab.
Stretches
700%+ elongation. Permanently flexible, and it handles building settling, wood shrinkage and temperature swings without cracking.
Holds
Backed by the Newborn guarantee through humidity cycles, temperature changes, and interior moisture exposure.
Octogun red, drip-free
Use the 930-GTD or 208D with this one, because a thinner acrylic runs on after you let go, and the drip-free mechanism is what stops it.
How to choose a gun →
Try it on a real joint first
If you caulk for a living we will send a cartridge of Painter's Caulk at no charge, freight included, so you can put it in the job you would have used your usual caulk on. One request per company, and there is nothing to buy.
Painter's Caulk for Interior and Exterior. Paint It in Two Hours.
Paintable. Flexible. Professional-grade adhesion. Used by contractors and homeowners who care about the finish.
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