Surface and ambient temperatures between 32°F (0°C) and 110°F (43°C) are required for proper curing and drying of material to take place. 

Hot weather conditions/precautions: When air or surface temperatures exceed 95°F (35°C), apply product to the shady side of structure before daytime air and surface temperatures reach their peak. Hot surface may be cooled with a mist of fresh water. Keep containers closed and out of direct sunlight when not in use. Do not apply when substrate temperature exceeds 110°F (43°C). 

Cold weather conditions/precautions: Product may be applied to frost-free substrates at temperatures below 32°F (0°C). Product will not begin to cure until temperatures reach 32°F (0°C) and remain above freezing. Keeping material stored in a heated environment prior to use, and misting applied material with warm, fresh water will help in these conditions. 

Low humidity conditions: The process of curing may take longer when lower humidity levels occur. A light misting of fresh water over the treated surface will accelerate curing if necessary. 

Though Joint & Seam Filler may be applied to damp surface and tolerates rain immediately after application, do not apply to surfaces with standing water or frost. Contact PROSOCO if conditions are questionable.   

Questions? VIsit the Joint & Seam Filler product page, see the Product Data Sheet, or call us at 1-800-255-4255. We're here to answer your questions, Monday-Friday, 8 a.m.-5 p.m., Central Standard Time.