Sashco eXact Color solves the color matching problem that drives contractors crazy. Mix any water-based paint or stain (approx. 10 ml required) directly into the caulk base, and get a perfect match every time. No more “close enough” colors from the rack. No more paint cracking over caulk lines.
This kit transforms standard caulking into precision color work. The 9.5 oz (280 ml) cartridge comes with a paint measuring syringe, tube of activator/thickener, and mixing nozzle/cap — everything needed to create custom-matched caulk on the job site.
Performance That Handles Montana’s Temperature Swings
The numbers tell the story. 100% maximum stretch elongation with 96% recovery in 5 minutes means this caulk moves with the substrate instead of cracking. More importantly for Montana contractors, 12.5% joint movement capability tested at -15°F proves it can handle the freeze-thaw cycles that destroy standard caulks.
Application temperatures from 40°F to 90°F cover Montana’s construction season, while the cured product works from -30°F to 250°F. That’s the temperature range that matters — not just surviving winter, but maintaining flexibility through decades of seasonal extremes.
| Specification | Value |
|---|---|
| Maximum Stretch | 100% |
| Recovery Rate | 96% in 5 minutes |
| Joint Movement at -15°F | 12.5% |
| Application Temperature | 40°F to 90°F |
| Service Temperature | -30°F to 250°F |
| Tack-Free Time | < 30 minutes |
| Full Cure | 4-5 days |
| VOC Content | 79.4 g/L (approx. 1.5% by weight) |
Low VOC content at 79.4 g/L matters in Montana’s tight, energy-efficient homes where air exchange rates stay deliberately low. ASTM C-834 compliant performance backs up the claims with third-party testing.
How the Color Matching System Works
The genius is in the simplicity. Draw 10ml of water-based paint into the included measuring syringe. Inject the paint into the tint base cartridge. Mix thoroughly until the color is uniform. Add the provided thickener to achieve the desired application consistency. Install the nozzle and load into a standard caulk gun.
This system handles more than just wall paint. Works with any water-based paint or stain, including stains and metallic finishes. That versatility matters when matching stained trim, metallic cabinet hardware surrounds, or specialty finishes.
Mixed shelf life extends up to 1 year when stored in cool, dry conditions. Mix a cartridge to match today’s project and save the rest for callbacks or future work. No waste, no guessing on color matches months later.
Where eXact Color Earns Its Keep
Typical uses include kitchen backsplashes, bathroom tile joints, cabinets and countertops, interior molding, baseboards, crown molding, exterior siding gaps, trim, and windows/doors. Basically anywhere a visible caulk line needs to disappear into the surrounding finish.
The substrate compatibility list covers the jobsite: wood, drywall, plaster, tile, brick, stucco, fiber cement, glass, metals (aluminum, brass, steel), plastics (PVC, vinyl, ABS, polycarbonate), stone, masonry, concrete, Formica, and Corian.
Know the limits though. Don’t use in water submersion areas, high traffic areas like floor joints, or on surfaces such as Kynar, polypropylene, waxes, polyethylene, or silicone. This is finish caulk, not structural sealant.
The key advantage ensures a professional finish with on-site custom color matching that matches the sheen and shade of the specific paint batch used. When the painter brings their own custom-mixed color, or when matching existing weathered stain, having exact color control on-site makes the difference between professional and amateur results.
The Bottom Line
At 5 stars across multiple retailers, contractors have validated what the specs promise. Common pros include ease of mixing, excellent color match, good flexibility, and professional results. The main watch-outs: requires careful measurement of paint and must use water-based paint only.
Sashco backs it with a Limited Lifetime Warranty that the product will substantially meet published specifications on the date of sale, with remedy including product replacement or refund of purchase price. Standard warranty language, but the confidence to offer it on a tintable system says something.
For trim carpenters, cabinet installers, and anyone doing finish work where caulk lines show, eXact Color delivers what it promises. The ability to match any water-based paint or stain eliminates the compromise of “close enough” colors. Combined with elastomeric performance that handles Montana’s climate, this kit solves real problems on real jobsites.
Frequently Asked Questions
Q: How much paint do I need to mix into Sashco eXact Color caulk?
Sashco eXact Color requires approximately 10ml of water-based paint or stain to tint the entire 9.5 oz (280ml) cartridge. The kit includes a measuring syringe to draw exactly 10ml of paint, which you inject directly into the tint base cartridge before mixing.
Q: Can I save leftover Sashco eXact Color caulk after mixing?
Yes, mixed Sashco eXact Color has a shelf life of up to 1 year when stored in cool, dry conditions. This allows contractors to mix a cartridge for today’s job and save the remainder for future touch-ups or projects requiring the same color match.
Q: What temperatures can Sashco eXact Color handle after curing?
Sashco eXact Color performs in service temperatures from -30°F to 250°F once fully cured. The caulk maintains 12.5% joint movement capability even at -15°F and offers 100% maximum stretch with 96% recovery in 5 minutes.
Q: What surfaces work with Sashco eXact Color?
Sashco eXact Color adheres to wood, drywall, plaster, tile, brick, stucco, fiber cement, glass, metals (aluminum, brass, steel), plastics (PVC, vinyl, ABS, polycarbonate), stone, masonry, concrete, Formica, and Corian. It won’t work on Kynar, polypropylene, waxes, polyethylene, or silicone surfaces.
Q: How long does Sashco eXact Color take to cure?
Sashco eXact Color becomes tack-free in less than 30 minutes (ASTM C-679), allowing for quick finishing work. Full cure takes 4-5 days depending on temperature and humidity conditions.
Q: Can I use oil-based paint or stain with Sashco eXact Color?
No, Sashco eXact Color only works with water-based paints and stains. The acrylic latex formulation requires water-based colorants for proper mixing and performance.
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