Best Concrete Options for Foundation Projects and Waterproofing
Choosing the right concrete products and sealants for foundation work is essential to prevent water intrusion, manage moisture, and extend structural longevity. This article highlights five top-performing concrete sealers and foundation crack repair kits designed for basements, crawl spaces, and exterior foundations. Each entry includes practical features, durability notes, and real-world usage considerations to help you compare textures, finishes, and protection levels.
Summary Table Of Selected Products
- Armor AR350 Low Gloss Wet Look Concrete Sealer (5 Gal) — Foundation Armor
- Armor SX5000 WB Natural-Look Sealer (5 Gal) — Foundation Armor
- Applied Technologies 6-10′ Fast Set Crack Repair Kit — Hydra Stop 300
- RadonSeal Complete DIY Foundation Crack Repair Kit, 10 ft — 2-component urethane
- Armor AR500 High Gloss Wet Look Sealer (5 Gal) — Foundation Armor
Armor AR350 Low Gloss Wet Look Sealer (5 Gallon)
Armor AR350 is a professional-grade solvent-based sealer designed for exterior concrete and pavers, ideal for unsealed or previously sealed solvent-based acrylic surfaces. It provides a dramatic color enhancement with a wet-look finish, helping to darken and enrich the appearance of concrete and pavers. The formula emphasizes long-lasting protection against abrasion, UV exposure, water absorption, and exposure to the elements, while maintaining a low-gloss aesthetic that resists yellowing over time. This sealer is suitable for commercial and residential applications, delivering both aesthetics and durable surface protection for foundation-adjacent areas where moisture and salts pose a risk.
Key considerations:
- Best for exterior concrete and pavers that benefit from a wet-look finish.
- Solvent-based formula delivers durable, long-lasting protection.
- Low gloss helps maintain a natural look while enhancing color depth.
Armor SX5000 WB Natural-Look Sealer (5 Gallon)
The Armor SX5000 WB is a professional-grade water-based silane-siloxane sealer designed for unsealed concrete, brick, pavers, and natural stone. It forms a deep, water-repellent barrier that significantly reduces water absorption—up to 95%—without changing the look, color, or texture of the substrate. This makes it an excellent choice for foundation-exposed surfaces where maintaining the natural appearance is important while protecting against moisture infiltration and freeze-thaw damage. It’s compatible with a wide range of materials, including masonry and natural stone, making it versatile for basement and crawl-space exterior walls and entryways.
Key considerations:
- Water-based formula minimizes odor and cleanup concerns.
- Significant reduction in water absorption with no color change.
- Low impact on finish is ideal for maintaining natural aesthetics around foundations.
Applied Technologies 6-10′ Fast Set Crack Repair Kit
This kit targets foundation crack repair with Hydra Stop 300 polyurethane foam that expands to fill cracks up to 10 feet long. It provides a quick-setting waterproof seal to prevent basement flooding and moisture intrusion through wall cracks. The kit is designed for DIY homeowners, offering a practical solution to manage leaks without heavy professional intervention. Its waterproof sealing properties help create a durable barrier once cured, contributing to overall foundation integrity and moisture control around basements and crawlspaces.
Key considerations:
- Fast-setting formula for timely crack sealing.
- Expands to create a robust, waterproof seal in common crack configurations.
- DIY-friendly application with standard caulking gun usage.
RadonSeal Complete DIY Foundation Crack Repair Kit
RadonSeal offers a drill-free foundation crack repair kit that is designed to stop water leaks and radon gas infiltration. The system uses low-viscosity two-component urethane that you inject through small holes without drilling large access points. It’s suitable for crawl spaces and basement walls, providing a reliable seal for even hairline cracks. The approach emphasizes ease of use and minimal homeowner disruption while delivering a long-lasting barrier against moisture, with the added benefit of reducing radon gas entry when applicable.
Key considerations:
- Drill-free injection reduces disruption to existing foundations.
- Two-component urethane offers durable, permanent seals for small cracks.
- Simple application using standard caulking equipment makes it accessible to DIYers.
Armor AR500 High Gloss Wet Look Sealer (5 Gallon)
Armor AR500 is a high-gloss, professional-grade solvent-based sealer designed to deliver a dramatic wet look on exterior concrete and pavers. This product shares the color-enhancing properties of the AR350, but with a higher gloss level for areas where a reflective, polished appearance is desired. It provides long-lasting protection against abrasion, UV exposure, road salts, water absorption, and seasonal weather changes. The high-gloss finish can help emphasize concrete textures while providing a durable protective layer for foundation-adjacent surfaces that face frequent environmental exposure.
Key considerations:
- Offers a high-gloss, wet-look finish for visual impact.
- Solvent-based formula for durable protection and color enhancement.
- Suitable for applications where a striking finish is preferred along foundation edges.
Buying Guide: Key Purchase Considerations For Foundation Surfaces
When selecting products for foundation projects, balance aesthetics, performance, and long-term protection. The following considerations help weigh options across solvent-based sealers, water-based sealers, and crack repair kits.
- Sealant type and finish: Solvent-based sealers (AR350/AR500) provide rich color and a durable finish with a wet-look effect, ideal for exterior concrete and pavers. Water-based sealers (SX5000 WB) preserve appearance without altering color, offering easier cleanup and lower odor. Choose based on desired finish and surface sensitivity to color changes.
- Material compatibility: Confirm substrate compatibility (concrete, brick, pavers, natural stone). Silane-siloxane sealers excel at repelling water while preserving appearance, while solvent-based sealers may yield stronger surface protection for high-traffic areas.
- Water intrusion protection: For foundation walls and basement areas, crack repair kits (Applied Technologies, RadonSeal) are crucial to stop leaks and prevent moisture-related damage. Look for cure times, expansion capacity, and ease of installation for DIY scenarios.
- Durability vs. appearance: Glossy finishes can highlight surface texture but may show wear sooner in heavy traffic areas. Low-gloss or natural-look sealers offer longer-lasting protection with subtler aesthetics, suitable for more concealed foundation surfaces.
- Application and installation: Assess the required tools, ventilation, and curing times. Drill-free injection systems minimize wall alterations, while traditional methods may demand more invasive procedures.
- Environmental and safety considerations: Ventilation, solvent odors, and VOC content vary by product. For indoor or semi-enclosed spaces, prefer low-VOC or water-based formulations when possible, and follow manufacturer safety guidelines.
- Maintenance and reapplication: Some sealers require reapplication every several years, while others offer longer intervals between coatings. Plan a maintenance schedule to preserve protection and appearance over time.
- Cost and coverage: Consider the total area to cover, product yield per gallon, and the number of coats required. Factor in potential labor costs if professional application is chosen.
These options provide a spectrum of foundation-specific solutions to address water management, crack repair, and surface protection. By evaluating substrate types, climate exposure, and maintenance preferences, you can select a combination that best safeguards foundations and surrounding surfaces.