Five Star Services your local asphalt sealing experts from the roof to the road. BioLock works on all asphalt driveways, parking lots and roadways even if other sealers have been previously applied. Unlike other sealers BioLock dries in 2-4 hours so you can get back to enjoying your home or business faster. BioLock dries clear and gives asphalt a wet look after its dry. BioLock seals in the strength and durability of asphalt for 5 years. This offer does not include repair of damaged or cracked asphalt surfaces. Limit one per household. After the first 400 square feet have been applied the remaining area can be treated at the normal rate if requested by the customer. All additional estimates will be provided prior to sealing. Offer expires 6 months after date of purchase.