DAP DynaFlex Ultra Window and Door Sealant


DynaFlex Ultra (dynaflex) sealants are used in all types of doors and windows. They have been developed to provide maximum protection against water intrusion while maintaining the flexibility required for ease of installation.

The main advantages of using a dap sealant over other products include:

• Durable – Daps are designed with durability in mind, which means they will not crack or break down under high temperatures or extreme pressure.

• Waterproof – Daps are waterproof, meaning they won’t allow moisture to enter through them.

• Flexible – Because of their design, daps do not require glue or adhesive to adhere to the surface. Instead, they are applied with a squeegee or applicator tool.

• Easy to Install – Unlike some other sealants, daps are easy to install. Simply apply it with a squeegee or applicator tool and let the product dry completely before applying your next coat.

How does DAP DynaFlex Ultra Sealant work?

DynaFlex Ultra is made up of two different ingredients: silicone oil and polyisobutylene (PIB). The PIB gives the sealant its durable characteristics and provides protection against extreme temperatures, while the silicone oil provides weather-resistance and flexibility.

Because dap sealants are flexible, they are able to easily fill in the small gaps and spaces where other sealants cannot, making them more effective at keeping out moisture. Dap also boasts a low odor, which is ideal for those who are sensitive to strong chemical smells.

Product Specifications:

DAP DYNAFLEX ULTRA sealant is a flexible, water resistent, tough durable, non-hardening sealant. This water resistent sealant is for use on interior or exterior window and door frames and sills to provide a protective barrier against water, dust and air.

What is the difference between Dap Silicone II and Dap DynaFlex sealants?

Dap Silicone II is a non-hardening, flexible sealant while Dap DynaFlex is also flexible but provides more protection against extreme temperatures. It also has the added benefit of being water resistant.

Is Dap DynaFlex Ultra safe for use on shower doors?

Yes. Silicone is the best choice when it comes to shower doors because it adheres well to most materials, fills small gaps and doesn’t harden so it can easily be removed when necessary.

Is Dap DynaFlex Ultra waterproof?

This product has excellent water resistant qualities and will provide protection against everyday moisture. However, this sealant is not designed to withstand heavy exposure to water.

Is Dap DynaFlex Ultra suitable for bathroom installation?

This sealant is suitable for use in bathrooms as long as it isn’t directly exposed to water on a regular basis. If it is going to be used in a shower or pool area, we recommend using Dap Silicone II instead.

How should I prepare my surface before applying Dap DYNAFLEX ULTRA sealant?

Make sure the surface is clean, dry and free of any dirt, dust, oils or other contaminants. A mild cleaner, like Windex, can be used to clean the surface. Make sure the surface is dry before applying the sealant.

What tools are required for installation?

A quality caulking gun that dispenses 1/2″ to 1″ is required for installation. Other tools include a putty knife and painter’s tape.

How long does it take for Dap DYNAFLEX ULTRA sealant to dry/harden?

This sealant can be applied in 4-8 hours and will reach maximum flexibility and water resistance after 7 days. If the area is subjected to water before then the area should be dried immediately and re-treated. It is best to allow a week before subjecting the area to rainfall.

Should I take certain safety precautions?

All Dap products contain isocyanates, so regular exposure to the product over a long period of time should be avoided. Also, make sure to store Dap products in a well-ventilated area away from heat or open flames.

How do I remove Dap DYNAFLEX ULTRA sealant?

Dap DYNAFLEX ULTRA sealant can be removed using Dap Fugitive 922 Remover or lacquer thinner.

Is there a difference between Dap brand and other brands of sealants?

Dap is a major brand name in the construction and DIY market.

Sources & references used in this article: