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Waterproofing basements, reducing radon, staining concrete, sealing outdoor concrete, bricks or pavers can be tricky to figure out but we are here to answer any questions you may have regarding our products, their usage, or the particular project you may have. Get the answers and the directions you need. Please contact us today and we will respond as soon as we can. Thank you for your interest!

Technical Support | Order By Phone

In need of customer service? Looking to place an order with RadonSeal by phone?

Our customer support is available Monday to Friday 8 AM – 5 PM ET.

1-800-472-0603 or 203-225-0366

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Canadian Customers

Our RadonSeal® Deep-Penetrating Concrete Sealers, LastiSeal® Brick & Masonry Sealer, and LastiSeal® Concrete Stain & Sealer can be purchased in the store or online from Eco-Building Resource located just north of Toronto, who also ship the products in Ontario and Eastern Canada:

Eco-Building Resource
136 Wellington Street East
Aurora, Ontario L4G 1J

(905) 841-3535, Fax: (905) 841-3536


Find Us

Radon Mitigation & Concrete Waterproofing Co.
Novion Inc./RadonSeal
494 Bridgeport Ave, Suite 101 336
Shelton, CT 06484-4748