RadonSeal
RadonSeal (operated as Novion Inc.) is a privately held direct-to-consumer e-commerce company selling industrial-grade concrete waterproofing sealers, radon mitigation products, and crack repair kits to DIY homeowners and professional contractors via its own online storefront.
- Company typePrivate
- Founded1997
- HeadquartersShelton, United States
- Headcount1–10
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What RadonSeal does
RadonSeal, operated as Novion Inc., is a privately held direct-to-consumer e-commerce company founded in 1997 and headquartered in Shelton, Connecticut. The company manufactures and distributes industrial-grade concrete waterproofing sealers, radon mitigation products, and crack repair solutions, sold primarily through its own online storefront (radonseal.com) and shipped factory-direct via UPS and FEDEX Ground Delivery. Its target customer base spans DIY homeowners seeking to waterproof basements and mitigate radon gas, and professional waterproofing contractors and foundation repair specialists purchasing commercial-grade materials, with a secondary segment of architects and specifiers working on construction projects.
RadonSeal's core technology is a deep-penetrating, chemically reactive concrete sealer that reacts with free lime and alkali inside concrete to densify and permanently seal pores from within, penetrating up to four inches and functioning without surface coatings, peeling, or reapplication. Complementary proprietary formulations include Ion-Bond Armor (positioned as the only silane/siloxane sealer rated against negative-side hydrostatic pressure), LastiSeal polyester polymer technology, DryWay/DryWay PLUS silane/siloxane water repellents, uPLUG polyurea joint filler chemistry, and ElastiPoxy self-leveling epoxy. The branded portfolio comprises more than fifteen product lines spanning penetrating sealers, foundation crack repair kits (DIY and PRO), floor crack repair kits (CrackWeld), joint fillers, pipe penetration sealants, cleaners and etchers, radon test kits, vapor transmission kits, and water-powered backup sump pumps, organized as a full ecosystem for below-grade and surface concrete protection.
The revenue model is transactional one-time purchase with no subscription layer, priced per unit (gallons, kits, cartridges) with same-day shipping on orders received by 2 PM EST. Pricing spans $22 (LastiSeal 8 oz) to $1,289 (ElastiPoxy 2-Gallon Kit), with PRO-grade foundation crack repair kits reaching $1,099, reflecting contractor use cases. RadonSeal is bootstrapped with no disclosed institutional funding, M&A activity, or leadership transitions, and operates with a small team of 1-10 employees that provides phone-based technical support and product expertise as a core part of the value proposition. Distribution outside the United States is limited to a single Canadian distributor partnership with ECO-Building Resource in Aurora, Ontario.
RadonSeal firmographics
Firmographics- Name
- RadonSeal
- Legal name
- Novion Inc.
- Website
- https://radonseal.com
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- RadonSeal (operated as Novion Inc.) is a privately held direct-to-consumer e-commerce company selling industrial-grade concrete waterproofing sealers, radon mitigation products, and crack repair kits to DIY homeowners and professional contractors via its own online storefront.
- Ownership category
- akta.pro rank
RadonSeal industry classification
Industry- Product category
- Concrete Waterproofing and Radon Mitigation Products
- NAICS
- Adhesive Manufacturing (32552)
- SIC
- Adhesives & Sealants (2891)
- akta.pro primary industry
- Primers, Bonding Agents & Surface Preparation Products (IMADAOAK)
- akta.pro secondary industries
- Adhesives & Sealants Chemicals (IMAEABAA), Concrete Repair, Crack Injection & Grouts (IMADAOAD), Priming, Sealing & Waterproof Coatings (Stain/Smoke Sealing, Damp-Proofing) (HSAPAHAH)
Keywords
Where RadonSeal is headquartered
LocationHeadquarters
- HQ city
- Shelton
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
RadonSeal business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Product Sales (E-commerce): Direct-to-consumer sale of waterproofing, sealing, and crack repair products through online storefront. Products include concrete sealers, brick/masonry sealers, water-repellent sealers, crack repair kits, cleaners, etchers, test kits, and backup sump pumps. Same-day shipping on orders received by 2 PM EST.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | RadonSeal Standard - 2.5 Gallons |
| Unit Pricing | Pay-as-you-go | RadonSeal Plus - 2.5 Gallons |
| Unit Pricing | Pay-as-you-go | LastiSeal Brick & Concrete Sealer |
| Unit Pricing | Pay-as-you-go | LastiSeal Concrete Stain & Sealer |
| Unit Pricing | Pay-as-you-go | DryWay Water-Repellent Sealer |
| Unit Pricing | Pay-as-you-go | DryWay PLUS Water-Repellent Sealer |
| Unit Pricing | Pay-as-you-go | PaverArmor Penetrating Paver Sealer |
| Unit Pricing | Pay-as-you-go | Ion-Bond Armor Subsurface Sealer |
| Unit Pricing | Pay-as-you-go | DIY Foundation Crack Repair Kits |
| Unit Pricing | Pay-as-you-go | PRO Foundation Crack Repair Kits |
| Unit Pricing | Pay-as-you-go | ElastiPoxy Joint & Crack Filler Kit |
| Unit Pricing | Pay-as-you-go | uPLUG Concrete Crack Repair Kit |
| Unit Pricing | Pay-as-you-go | uPLUG PRO Semi-Rigid Joint Filler |
| Unit Pricing | Pay-as-you-go | uPLUG DIY Semi-Rigid Joint Filler |
| Unit Pricing | Pay-as-you-go | PipeTite DIY Injection Kit |
| Unit Pricing | Pay-as-you-go | Efflorescence Remover |
| Unit Pricing | Pay-as-you-go | BrickTastic Brick & Paver Cleaner |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels7 records
RadonSeal product offering
Product offeringCore offering
RadonSeal manufactures and sells industrial-grade concrete waterproofing sealers, foundation crack repair kits, and radon mitigation products directly to DIY homeowners and professional contractors via factory-direct e-commerce. The core offerings include deep-penetrating chemically reactive concrete sealers (RadonSeal, LastiSeal, DryWay, PaverArmor, Ion-Bond Armor), crack repair systems (DIY and PRO Foundation Kits, uPLUG, ElastiPoxy, PipeTite, CrackWeld), complementary cleaners and etchers, radon and vapor test kits, and water-powered backup sump pumps. Products are formulated in-house using proprietary chemical sealer technology and shipped factory-direct via UPS and FEDEX Ground from the Shelton, Connecticut headquarters.
Product overview
RadonSeal is a direct-to-consumer concrete sealing and repair product company offering industrial-grade waterproofing solutions for basements, driveways, garage floors, and masonry. The portfolio centers on three core product lines: penetrating concrete sealers (RadonSeal, LastiSeal, DryWay, PaverArmor, Ion-Bond Armor) that waterproof and protect concrete from within; crack repair systems (DIY and PRO Foundation Crack Kits, uPLUG, ElastiPoxy, PipeTite, CrackWeld) for repairing foundation cracks, control joints, and pipe penetrations; and complementary cleaners/etchers (Efflorescence Remover, BrickTastic, Clay-X, Universal Concrete Cleaner, PowerEtch, BioZap) for surface preparation and maintenance. Additional offerings include radon test kits, vapor transmission kits, and backup sump pumps. The products are designed for both DIY homeowners and professional contractors, with professional-grade formulations sold alongside consumer-friendly kits.
Differentiator
Problem solved
Functional benefit
Brands
- RadonSeal Standard: Deep-penetrating concrete sealer formulated for newer concrete surfaces (indoor poured concrete less than 20 years old, outdoor poured concrete less than 2 years old). Zero VOC, penetrates up to 4 inches into concrete.
- RadonSeal Plus
- LastiSeal
- LastiSeal Concrete Stain & Sealer
- DryWay
- DryWay PLUS
- PaverArmor
- Ion-Bond Armor
- CrackWeld
- uPLUG
- ElastiPoxy
- PipeTite
- BrickTastic
- Clay-X
- BioZap
- PowerEtch
Products and services
- RadonSeal Concrete Sealer (Standard and Plus)
- LastiSeal Brick and Concrete Sealer
Quantifiable outcome
- RadonSeal penetrates up to 4 inches into concrete for permanent internal sealing
- +5 more outcomes
Companies that use RadonSeal
Customer profileNamed customers5 records
Segments3 records
Ideal customer profiles3 records
RadonSeal technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
RadonSeal partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- ECO-Building ResourceregionalCanadian distributor for RadonSeal products. Stocks and supplies products for Canadian customers at 136 Wellington Street East, Aurora, Ontario L4G 1J1. Contact: 905-841-3535. Helps save time and money for Canadian customers by providing local inventory access.
Scale indicators2 records
Recent moves6 records
Expansion highlights6 records
RadonSeal competitors and assessment
Company assessmentDirect peers
- MasonryDefender: D2C brand selling concrete and masonry sealers, water repellents, and cleaners. Comparable product mix and DIY/contractor customer focus.
- Siloxawood/TheraSeal: Manufacturer of silane/siloxane penetrating sealers sold D2C for concrete, brick, and masonry waterproofing. Competes most directly with DryWay and PaverArmor.
- Drylok (United Gilsonite Laboratories): Established waterproofing paints and sealers brand for basement walls and masonry. Direct competitor in the basement waterproofing space through a different (film-forming) technology.
- Concrete Sealers USA: D2C retailer/manufacturer of penetrating concrete sealers, including silane/siloxane and epoxy systems. Overlaps tightly with RadonSeal's sealer portfolio.
- Foundation Armor: Direct D2C competitor selling penetrating concrete sealers, waterproofing products, and crack repair kits to homeowners and contractors. Highly comparable product line-up and DIY/professional targeting.
- Ghostshield (Sealant Corp): Direct D2C competitor offering silane/siloxane and penetrating concrete sealers for basements, driveways, and brick. Comparable chemistry, channel, and customer base as RadonSeal.
Broad incumbents
- Sika AG: Global construction chemicals leader with waterproofing, sealing, and concrete repair products. Incumbent competitor with much larger R&D and distribution; overlaps with both DIY and contractor segments.
- Basement Systems (awdry Basement): Large, established basement waterproofing contractor network. Competes indirectly with RadonSeal by offering full-service waterproofing where RadonSeal offers DIY kits.
- Quikrete: Major manufacturer of concrete repair and maintenance products sold through big-box retail. Competes in crack repair and concrete sealing categories at a much larger scale.
Emerging players
- RadonAway: Specializes in radon mitigation fans and system components. Adjacent rather than direct: sells active mitigation hardware while RadonSeal sells sealing products that reduce radon ingress.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights6 records
Customer concentration
RadonSeal social profiles
Digital presenceRadonSeal financial estimates
Financial estimateRevenue estimate
Valuation estimate
RadonSeal leadership team
Management profileNumber of profiles
RadonSeal funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
RadonSeal M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about RadonSeal
What does RadonSeal do?
RadonSeal manufactures and sells industrial-grade concrete waterproofing sealers, foundation crack repair kits, and radon mitigation products directly to DIY homeowners and professional contractors via factory-direct e-commerce. The core offerings include deep-penetrating chemically reactive concrete sealers (RadonSeal, LastiSeal, DryWay, PaverArmor, Ion-Bond Armor), crack repair systems (DIY and PRO Foundation Kits, uPLUG, ElastiPoxy, PipeTite, CrackWeld), complementary cleaners and etchers, radon and vapor test kits, and water-powered backup sump pumps. Products are formulated in-house using proprietary chemical sealer technology and shipped factory-direct via UPS and FEDEX Ground from the Shelton, Connecticut headquarters.
Is RadonSeal a public or private company?
RadonSeal is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was RadonSeal founded?
RadonSeal was founded in 1997. It employs 1 to 10 people.
Where is RadonSeal based?
RadonSeal is headquartered in Shelton, United States, in the North America region.
How does RadonSeal make money?
One revenue line is on record: product Sales (E-commerce).
Who are RadonSeal's main competitors?
Direct peers on record are MasonryDefender, Siloxawood/TheraSeal, Drylok (United Gilsonite Laboratories), Concrete Sealers USA, Foundation Armor and Ghostshield (Sealant Corp). Broad incumbents are Sika AG, Basement Systems (awdry Basement) and Quikrete. RadonAway is listed as an emerging player.
Does RadonSeal have an API?
No public API is recorded for RadonSeal.
What industry is RadonSeal in?
RadonSeal's product category is Concrete Waterproofing and Radon Mitigation Products. Its primary akta.pro industry code is IMADAOAK, Primers, Bonding Agents & Surface Preparation Products, with a secondary code of IMAEABAA, Adhesives & Sealants Chemicals. Its NAICS code is 32552 and its SIC code is 2891.