Lanco Elastomeric Roof Sealer: Benefits, Application, and Tips
Lanco Elastomeric Roof Sealer is a water-based acrylic coating designed to seal and protect roofs by forming a flexible, weather-resistant barrier. It bridges minor cracks, reflects heat, and extends roof life when applied correctly. This guide explains its key features, suitable substrates, application steps, maintenance practices, and cost considerations, helping homeowners and contractors decide if it’s the right choice for their roofing project.
What Is Lanco Elastomeric Roof Sealer
Lanco Elastomeric Roof Sealer is an elastomeric coating that cures into a continuous, elastic film. It remains flexible across temperature fluctuations, helping seal out moisture and reduce heat transfer. As a water-based product, it typically has low odor, easy cleanup with soap and water, and lower VOC content compared with solvent-based coatings. The sealer is formulated to withstand wind-driven rain, ultraviolet (UV) exposure, and aging, making it suitable for flat, low-slope, and some pitched roofs.
Key Features And Benefits
- Weather Resistance: Excellent adhesion to a variety of roof substrates and strong resistance to UV, rain, and temperature changes.
- Elasticity: Maintains flexibility to bridge hairline cracks and minor movement without cracking.
- Reflectivity: Light-colored formulations help reduce attic temperatures and cooling costs by reflecting solar radiation.
- Water-Based: Low odor, easy cleanup, and generally lower environmental impact compared with solvent-based coatings.
- Ease of Application: Can be rolled or brushed onto prepared surfaces; multiple coats may be applied for enhanced waterproofing and durability.
Substrate Compatibility
For best results, verify substrate compatibility before application. Lanco Elastomeric Roof Sealer typically adheres well to concrete, wood, metal, single-ply membranes, and existing coatings when properly prepared. Surfaces should be clean, dry, and free of dirt, oils, and loose materials. Some highly porous substrates may require a primer. Incompatible substrates or damaged roofing systems may need repair or replacement prior to coating to prevent coating failure.
Application Guide
Preparation is essential. Remove all debris, repair obvious leaks, and ensure the roof is dry. Clean with a stiff brush or power wash if necessary, and allow to dry completely. Use weather-appropriate temperature and humidity guidelines as specified by the product data sheet. Apply with a roll or brush, and back-roll to ensure uniform coverage. For most roofs, two thin coats yield better adhesion and performance than a single thick coat. Allow sufficient curing time between coats, typically 4–24 hours depending on temperature and humidity.
When applying, avoid puddling areas and ensure even thickness. A typical coverage rate ranges from 50–100 square feet per gallon per coat, depending on surface porosity and substrate. Protect adjacent surfaces and follow all safety recommendations, including proper ventilation and fall protection when working on roofs.
Performance And Durability
Elastomeric roof sealers like Lanco form a seamless membrane that resists wind-driven rain and UV radiation. Over time, the coating can experience chalking or color fading in very sunny climates, but re-coating can restore waterproofing and reflectivity. Proper surface preparation and consistent thickness are critical to preventing premature failure. On roofs with frequent movement or structural issues, substrate repair should precede coating to maximize longevity.
Maintenance And Repairs
Periodic inspection is recommended to identify blistering, cracking, or wear. Address any damage promptly to prevent underlying substrate deterioration. If the coating shows signs of failure, clean, re-prime if required, and recoat with a fresh layer. For small leaks, localized patching with compatible sealant may be sufficient, but a full recoat ensures a uniform, durable waterproof layer. In coastal or highly humid environments, more frequent checks may be prudent due to salt and moisture exposure.
Environmental And Safety Considerations
As a water-based product, Lanco Elastomeric Roof Sealer often complies with lower VOC requirements. Always review the product’s safety data sheet (SDS) for ventilation, skin, and eye protection recommendations. Wear protective clothing and goggles, and avoid skin contact. Dispose of empty containers according to local regulations. If applying on roofs that support plant life or near water runoff, ensure proper drainage and runoff containment to protect ecosystems.
Cost Considerations And Where To Buy
Pricing varies by region, cover rate, and required coats. A typical project considers material cost, tools, and labor. While coverage per gallon depends on surface porosity, planning for two coats on most roofs yields reliable protection. Lanco Elastomeric Roof Sealer is available through home improvement retailers, building supply stores, and roofing distributors. For best value, confirm the necessary coats and primer requirements with the supplier and compare multiple brands for compatibility with existing roofing materials.
Performance At A Glance
| Aspect | Details |
|---|---|
| Primary Use | Elastomeric roof coating for sealing and protecting flat or low-slope roofs |
| Substrate Compatibility | Concrete, metal, asphalt, wood, selected single-ply membranes |
| Application Method | Roll or brush, two coats recommended |
| Curing Time | Typically 4–24 hours between coats; full cure varies by conditions |
| VOC Level | Low to moderate (depends on formulation); follow SDS |
| Longevity | Several years with proper maintenance and recoat as needed |
Common Pitfalls To Avoid
- Coating over wet or dirty surfaces, which compromises adhesion.
- Inadequate curing time between coats in humid or cold conditions.
- Ignoring substrate damage; coating over structural issues can lead to leaks.
- Over- or under-priming when the manufacturer indicates priming is required.
Final Considerations
Lanco Elastomeric Roof Sealer offers a durable, flexible solution for protecting and extending the life of many roof types. Proper surface preparation, adherence to recommended coat thickness, and timely maintenance are essential to maximize performance and cost-effectiveness. For homeowners considering energy efficiency gains, the reflective qualities of light-colored formulations can contribute to cooler building interiors and reduced cooling loads in hot climates.