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SIDEWALK CHALK Typical Dimensions: At least 10 chalk sticks per pavement marking. Estimated Cost: $20 for a 72 pack. Overview: Use white sidewalk chalk to color in pavement marking stencil and set with hair spray for best result.

PRO TIP: APPLYING SIDEWALK CHALK Sidewalk chalk is a very dusty and short-term material. For best results: ɖɖ Use large “railroad” chalk sticks, and apply a thick layer of chalk. ɖɖ Fan chalked area to remove dust when drawing is complete. ɖɖ Cover chalked area with hair spray to create a net and “set” the dust. ɖɖ Allow 3 - 4 minutes for hairspray to dry before removing stencil.

F Demo (1 day - 1 month) Pilot (1 month - 1 year) Interim (1 - 5 years) Recommended Applications and Installation ɖAll ɖ projects: Where white pavement markings are needed but fast removal is a requirement, consider using sidewalk chalk with hairspray. This technique often involves using a stencil to guide application, applying as heavily as possible, and then using hair spray to “set” the chalked area. Tips and Considerations »» Appropriate for very short-term projects. »» Use large railroad chalk sticks — thin chalk sticks will not hold up to heavy drawing for road markings. »» Once chalk drawing is complete, fan the area to remove as much chalk dust as possible before applying hair spray. »» Not an ideal approach for large areas, but works well for sharrows or a handful of bike lane markings. With many hands, you can quickly color in your designs, set the chalk, and enjoy! Potential Sources »» Buy from local supermarket, hardware, or art supply store. »» Use a handmade or borrowed stencil to guide chalk application.

In San Jose, CA a volunteer applies hair spray to help set pavement marking created with sidewalk chalk. (Street Plans)

MATERIALS PALETTE · Surface Treatments · 51

Tactical Urbanist's Guide to Materials and Design v.1.0  

The only materials and design guidance for Tactical Urbanist demonstration, pilot, and interim design projects. Funded by the James L. Knigh...

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