TyvekŪ Tape is recommended as a best installation practice for sealing seams of TyvekŪ Weatherization Systems to help provide a continuous barrier against air infiltration. TyvekŪ Tape is constructed of an oriented polypropylene film coated with a specially formulated permanent acrylic adhesive. Using a quality house wrap on a home is important, so is completing the job properly. Using TyvekŪ tape for taping the seams after wrapping is the best practice for maximum reduction of air answer intrusion through seams and taping completes the envelope around the home. DuPont TyvekŪ tape features a special engineered adhesive to help promote the best "TyvekŪ to TyvekŪ " adhesion. DuPont is consistently at the forefront of building research related to the building envelope and ultimately into value-added products that help address and solve the needs of the home building community. Requires "Motor Freight" shipping. Please select Motor Freight option at checkout and Loyola customer service will email or call you with shipping charges before charging your credit card. Availability: Usually ships in 2-3 business days. You can also call us at; 1-800-937-9021 x106 or 1-757-498-6118 x106 TYTAPE2$449.55