Contractors with the City of Twin Falls will be resealing streets in northeast Twin Falls beginning Monday, Aug. 10 through Thursday, Aug. 20. During this time, contractors will Fog Seal several residential streets from Eastland Drive to Hankins Road, and from Falls Avenue to about Addison Avenue. A complete list of streets is available on the City website at TFID.ORG.
Fog Seal is a street treatment that sprays a Gilsonite-based sealant on the roadway, which seals the surface against oxidation and the elements. Gilsonite is a naturally occurring resinous asphalt ore that is GreenCircle Certified as an environmentally-friendly product.
Fog Sealing significantly extends the life of roadways
Streets that will be Fog Sealed must be free and clear of all vehicles and obstructions. Twin Falls residents will be notified at least 24 hours before their street is closed for Fog Sealing. Door hangers will be posted on homes to inform residents when their street will be sealed.
Fog Sealing significantly extends the life of roadways and is preferred for newer residential streets because it does not leave behind loose rock – or chip – and provides a smooth black surface. It also costs less and has a shorter cure time than Chip Seal, which embeds crushed rock into roadways, and is often used on older streets that require more substantial maintenance.
Questions about the Fog Seal, and other City street resurfacing projects, please contact the City of Twin Falls Public Works Department at 208-736-2226.
For MotoristsPlease do not drive on streets that have been sealed and are closed. Please follow detours that are put in place to keep vehicles off uncured streets, and park vehicles off the roadway until cured. For ResidentsResidents will be notified at least 24 hours prior to work that will affect their streets. During sealing projects, residents will be notified by door flyers and in-person contacts, that parking and driving on the streets will be prohibited until the sealant has cured on the roadway. 
| Chip SealChip seal is applied by spraying a heavy coating of emulsified asphalt oil onto a road surface and then covering the oil with rock. Rollers are then used to embed the rock into the oil, forming a new wearing surface. A chip seal is applied when the pavement deterioration is greater than what a slurry, friction, and fog seal is designed to correct, but has not deteriorated to the point of requiring an expensive asphalt replacement. Fog SealFog seal is the application of a thin layer of emulsified asphalt to the existing surface, which seals narrow cracks, restores pavement flexibility, and most importantly restores the underlying pavement structure. Fog seal is generally applied to newer streets that do not require more significant methods such as Chip, Slurry, and Friction Seal. Friction SealFriction Seal is a newer street treatment that sprays Gilsonite oil and a layer of fine crushed aggregate. Gilsonite is a naturally occurring resinous asphalt ore that has been used for more than 25 years. The treatment does not require sweeping, does not leave behind loose rock, has a short cure time of about two hours, and seals the surface to extend the life of the roadway.
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