Waterproofing silos with Sikaflex®-403 Tank & Silo

Sikaflex®-403 Tank & Silo is a sealant with the highest resistance to organic acids that can accommodate movement and is trafficable. www.sika.com/en/construction/...
Sikaflex®-403 Tank & Silo is a one-part, moisture-curing, polyurethane-based elastic sealant. It is designed to reliably and durably seal movement and connection joints exposed to organic acids found in agriculture, the food industry, and organic waste processing (e.g.: biogas production).

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NEVER, EVER use duct tape, shame on you sika