Dexpan Expansive Demolition Grout - FAQs

FAQ#1: How much area will Dexpan® fill?
One 11 lb. bag of Dexpan® can fill up to nine 1.5" diameter holes that are 1 ft (30 cm) deep. A standard 44 lb. Box of Dexpan® will cover approximately 34-36 1.5" diameter holes that are 1 ft (30 cm) deep.
 
FAQ#2: How big or small can I drill my holes?
For best demolition results it is recommended to use 1.5” diameter holes (1-1/2 inch).
It is not recommended to exceed 2.5” or go less then 1” in diameter.
 
FAQ#3: How far apart can I space my holes?
Recommended spacing is as follows:
The density of the rock / concrete will determine the hole spacing. If you are working with reinforced concrete, it is highly recommended to space your holes 1-foot apart from the center of the hole. In some rocks, you may space your holes up to 2 feet apart. It is recommended to test out the density of your stone first by drilling holes starting at 12”, then to 16” then to 18” then to 24” then determine what will work best for your stone.
Your hole size will also determine your spacing. Using a 2” diameter hole may allow you to extend your spacing to 18” – 24”, depending on the density of the stone.
Dexpan® is a “controlled demolition agent”; you may cut your stone to your desired size, by just making sure that your lines are set on 1 foot spacing.
 
FAQ#4: How do I determine what type of Dexpan® to use?
Determine the type to use by checking the Rock / Concrete temperature.
(Dexpan III: 23º-50ºF, Dexpan II: 50º-77º, Dexpan I: 77º-104ºF)
 
FAQ#5: When is the best time to apply Dexpan®?
The best time to apply Dexpan® is early in the morning, especially in extremely hot temperatures.
For night application, please consult our technical dept.
 
FAQ#6: What causes Dexpan® to blow out?
You may get a blow out if there is no space for the project to expand to, or the holes are spaces too far apart. 
You may get a blow out if you do your application in the middle of the day when the temperature is at its highest.
You may also experience blow outs if you hole diameter exceeds recommended hole diameter.
You may also experience blow outs if using core drill bits. Note: There has been much success using core bits, this is just a possibility.