Why DuPont™ Concrete & Masonry Caulk over other brands?
DuPont™ Concrete & Masonry has exceptional alkali resistance compared to other acrylic brands. Since most cementitious substrates are highly alkaline, this is an important performance characteristic.

Can DuPont™ Concrete & Masonry Caulk be applied over freshly applied concrete?
Yes.  The superb alkali resistance enables you to apply over new concrete in 24 hours.

Can DuPont™ Concrete & Masonry Caulk hold up to standing water for a period of time?
Yes, DuPont™ Concrete & Masonry has excellent water resistance and can withstand limited submersion for a short period of time.  It is not intended for areas that will be permanently submerged in wsater.

Can the product be painted?
Yes, DuPont™ Concrete & Masonry Caulk may be painted if desired.

Is DuPont™ Concrete & Masonry Caulk VOC Compliant?
Yes.  All of the DuPont™ Caulk products not only meet the current VOC requirement, but are actually below the lower 2% VOC requirement proposed by the state of California. 

Can it be used for interior applications?
Yes, DuPont™ Concrete & Masonry Sealant is a premium caulk that exceeds the ASTM C-834 requirements and may be used on both interior and exterior applications.  It has excellent adhesion to various substrates including wood, metal, marble and glass.

Does the product have mold and mildew protection?
Yes, all of the DuPont™ Caulk products contain a premium mildewcide giving them outstanding mold and mildew resistance.

What is a mildewcide?
Mildewcide is a term for chemicals that retard the growth of mold and mildew. The DuPont™ Caulk products contain a premium mildewcide that resists the growth of mold and mildew in the surface of the caulk after it is cured.

What type of surface preparation is needed prior to applying the product?
It is important that the area be thoroughly cleaned before caulking any joint, gap or crack. Surfaces to be caulked must be dry and free of all dirt, dust, oil, mildew, loose paint, and old caulk. Only apply when caulk, surface and air temperatures will remain above 40°F. Do not apply on surfaces that are above 120°F.  Do not apply on exterior surfaces when rain is immediately expected.

How long should I wait before driving over the surface that has been caulked?
To ensure the best results, we recommend waiting 24 hours before allowing vehicular traffic. Additional time may be required depending upon environmental conditions (temperature and humidity can affect drying time).

Can I use DuPont™ Concrete & Masonry to seal my aquarium?
It is NOT recommended that any of the DuPont™ caulk products be used in areas that will be immersed in water for long periods of time.  Products specifically designed for pools and aquariums should be used for this type of application.

What do I use to clean excess product from tools or other surfaces?
All of the DuPont™ Caulk products clean-up with just soap and water.

What is Kevlar®?
Kevlar® is an innovative fiber from DuPont that combines high strength with light weight to help dramatically improve the performance of a variety of consumer and industrial products.   For more information on Kevlar®, please visit www.kevlar.com.