Black Jack (Gardner-Gibson)

Speed Fill 6439

Crack filler · US · manufacturer-sourced

Check your container: This countdown is for the Crack filler variant. Similar-looking versions may have different times.

How long before Black Jack (Gardner-Gibson) Speed Fill 6439 can get rained on?

Short answer

Rain-safe: 12 hours after application.
Fully dry: 1 hour after application.
Asphalt repair and sealers

Pavement reopening plan

Walking, driving and sealing happen on different days

  1. Clean and dry the pavement before the Crack filler
  2. Keep rain and traffic off for the stated time
  3. Open to vehicles only at the stated time

This product’s stated stages Quoted at 73°F

  • Fully dry1 hour
  • Rain-ready12 hours

Worth noticing: Fully dry at 1 hour; rain-ready at 12 hours.

Common mistake: Driving on a sealer that is dry on top but soft underneath; tire marks follow.

Asphalt repair and sealers

Coat timeline

Plan the next coat and final use separately

  1. 1
    ApplyUse the Crack filler directions and prepare for asphalt crack repair and driveway cracks.
  2. 2
    Next coatUse the listed recoat milestone; do not substitute touch-dry time.
  3. 3
    Normal useWait for the applicable handling, water or cure milestone.

Time reopening the pavement

When did you apply it to the pavement?
Conditions that affect drying
Where?
Thickness

Stated times

  • Rain-safe12 hours
  • Fully dry1 hour

From Black Jack (Gardner-Gibson) data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.

Manufacturer website: gardner-gibson.com

Conditions & fine print
  • Stated conditions: 73°F (23°C)
  • Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label.
  • Apply at 60°F or above
  • Region US. Formulas can differ between countries; check your container.
  • Rain-safe: Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label.
  • Fully dry: The source gives no conditions for this time.
  • Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Confirm this is your product

Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.

Exact listing
Black Jack (Gardner-Gibson) Speed Fill 6439
Variant
Crack filler
Region
US
Listed use
asphalt crack repair, driveway cracks
Timed stages recorded
rain ready, full dry
Source checked
2026-10-25

Documentation: Technical data sheet · Technical data sheet, code C-19 6439

Condition attached to the stated time: Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label.

About this product

A crack filler sold on speed: dry in an hour on the sheet. The stated condition is a surface of at least 60°F and a dry 12 hours afterward.

Using this specific product

Black Jack (Gardner-Gibson) Speed Fill 6439 is listed here as the Crack filler version for asphalt crack repair and driveway cracks. For filling or sealing asphalt, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.

Before you start

  • Confirm the package says Crack filler; related versions can use different timing.
  • For asphalt crack repair and driveway cracks, pay particular attention to pavement temperature, sun, humidity, depth of fill and rain in the forecast.
  • Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label. The source gives no conditions for this time.

How to check readiness

Check that the surface is firm, then keep traffic off for the stated time. Use this only as the rainfast milestone. It does not establish general cure or re-entry safety. The sheet says the filler dries in 60 minutes.

Avoid this mistake

Sealer feels dry long before it will take a turning tire; wheels need the longer time.

Keep going

Questions

How long before this product can get rained on?

Black Jack (Gardner-Gibson) states: The sheet says to avoid rain for 12 hours after application. Conditions: Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label.. The sheet says the filler dries in 60 minutes. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.

How fast does Speed Fill 6439 dry?

The sheet gives 60 minutes with no stated conditions, so expect longer in cold or damp weather.

How long until this product is fully dry?

Black Jack (Gardner-Gibson) states: The sheet says the filler dries in 60 minutes. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.

What affects how long this product takes to dry or cure?

Asphalt products need dry pavement and a rain-free window. Cool, humid or cloudy weather slows them. Follow the current data sheet and label. Follow the product label for your conditions.

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