What sealant would work best?
The seam that runs between the metal piece of a glass top addition and the conrete wall outside is dried and cracked. I’m wondering if anyone can recommend the correct product to re-fill this seam. Thanks!

southernslope
in DIY 13 years and 3 months ago
4
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southernslope | 13 years and 3 months ago
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Thank you!

restorationcontractor | 13 years and 3 months ago
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Use Sonneborn NP-1 sealant availiable at Extech (718) 852-7090. In order for sealant to work seams must be properly prepared before application.

southernslope | 13 years and 3 months ago
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Sorry if my post is confusing. The concrete is not cracked. The product that fills the expansion joint between the metal and concrete is cracked. Thanks again!

greenmountain | 13 years and 3 months ago
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“Dried and cracked” could be a poor installation of concrete (poor pour). A veriety of techniques are used to keep Portland cement procucts wet when curing, perhaps that was not done. If so, the product was water, but it is too late now. I imaging the glass is installed perpendicular to the conccrete and you need an expansion joint there, such as caulk. Typically this is polyurathane such as Sikaflex, or Sonolastic – not silicone. A gap for this could have been left when installing the concrete or glass. If not, I don’t know a product to use now.