Sika PostFix is a two-component, mix-in-the-bag expanding foam for supporting non-structural posts such as fence, mailbox, and signposts. This two-part, pre-proportioned polyurethane expanding foam has been specifically formulated to provide a lightweight, mix-in-the-bag, fast-setting solution. This high-strength backfill can be used for wooden, PVC, and steel in-ground supports.
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Simple application - just roll, mix, cut and pour
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Sets in as fast as 3 minutes
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High strength and resistant to uptake of water
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Seals and protects base of post
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Compatible for use in cold conditions without the need for additives
