Dehco Rubber Roof Coating is a elastomeric roof coating designed to extend the life of flat or low-slope roofs by sealing cracks, reflecting sun heat, and reducing energy costs. This guide explains how it works, where it excels, and how to apply it correctly on U.S. roofs. It covers substrate compatibility, preparation steps, safety considerations, maintenance, and budgeting. Readers will gain practical knowledge to determine if Dehco is right for their project and how to achieve lasting performance through proper selection and installation.
Product Overview
Dehco Rubber Roof Coating is an elastomeric acrylic or rubber-based sealant formulated for waterproofing and UV resistance. It creates a seamless membrane over metal, concrete, asphalt, and many traditional roofing substrates. The coating’s flexibility helps accommodate temperature-induced movement, reducing the risk of future cracks. For residential and commercial applications, it provides a reflective surface that lowers heat absorption and can extend the roof’s service life when applied correctly.
Key Features And Benefits
- Waterproofing Seal—Seals minor cracks and seams to prevent leaks during heavy rainfall.
- Elasticity—Maintains flexibility to accommodate substrate movement without cracking.
- Reflectivity—High solar reflectance reduces cooling costs and mitigates heat gain.
- UV Resistance—Formulation resists degradation from sun exposure for longer service life.
- Ease Of Application—Can be rolled, brushed, or sprayed by professionals with proper equipment.
- Repairability—Flakes or blisters can be spot-treated without a full roof replacement.
Preparation And Application
Proper surface preparation is critical for Dehco’s performance. Begin with a clean, dry, and structurally sound substrate. Remove loose coating, dust, and debris. Repair large cracks or damaged areas with compatible patches or primers as recommended by the manufacturer. Weather conditions matter: avoid application in rain, extreme heat, or freezing temperatures.
Application steps typically include primer application if required, followed by multiple coats of Dehco Rubber Roof Coating. Allow each coat to dry to the manufacturer’s specified tack or dry time before applying the next. For metal roofs, a galvanized or corrosion-inhibiting primer may be advised. For best results, hire a contractor trained in roof coatings to ensure uniform thickness and full coverage.
Substrate Compatibility
Dehco coatings generally work well on common roof substrates such as metal, concrete, asphalt, EPDM, and polyurethane foam. Compatibility may vary by product variant, so confirm substrate compatibility with the specific Dehco formula being used. In some cases, existing coatings must be tested for adhesion and removed if they are deteriorating or incompatible. Always follow the product data sheet and local building codes when evaluating substrate readiness.
Environmental And Safety Considerations
Elastomeric roof coatings typically emit minimal odor after curing but may have solvent components during application. Use adequate ventilation, eye protection, gloves, and respirators as required by the product’s safety data sheet. Manage runoff and protect landscaping from overspray. Some formulations are water-based and low-VOC, which is advantageous for indoor projects or sensitive environments. Check local regulations for disposal of old coatings and containers.
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Maintenance And Longevity
Routine inspection is essential to maximize performance. Look for blistering, peeling, or ponding water that suggests insufficient adhesion or thickness. Touch up damaged areas promptly to prevent leaks from expanding. A typical recoat cycle ranges from 5 to 10 years, depending on climate, roof slope, and maintenance. In regions with heavy UV exposure or severe weather, more frequent inspections are advised. Recoating should be performed with the same or compatible product to maintain cohesive performance.
Cost And Budget Considerations
Cost factors include material price, surface area, substrate condition, and labor. A typical project will account for material costs per square foot plus contractor labor. While Dehco coatings can be cost-effective relative to full roof replacements, savings depend on proper surface preparation and thickness. Consider long-term energy savings from reflectivity and extended roof life when calculating total cost of ownership. Obtain multiple, detailed bids that specify coverage rate and warranty terms.
Common Problems And Troubleshooting
- Poor Adhesion—Usually caused by dirty surfaces, moisture, or incompatible primers. Re-clean, prime, and recoat after adequate drying.
- Blistering—Indicates trapped moisture or improper thickness. Address moisture sources and recoat with recommended thickness.
- Cracking After Cure—Often from substrate movement or rapid drying. Apply in compliant conditions and consider additional coats or a primer for better flexibility.
- Uneven Finish—Fix by ensuring even roller/brush technique or consider spray application by a pro for uniform thickness.
Choosing The Right Contractor
Seek contractors with demonstrated experience in elastomeric roof coatings and Dehco products. Request references, project photos, and a written plan detailing surface prep, product type, film thickness, cure times, and warranty terms. Ensure they carry appropriate insurance and provide site-specific color and reflective capabilities. A qualified contractor should perform a pre-job assessment, confirm substrate compatibility, and offer a clear maintenance plan after installation.
Frequently Asked Questions
- How long does a Dehco roof coating last? Durability varies with climate, but many installations last 5–10 years between recoats, with proper upkeep.
- Can Dehco coatings be applied over existing coatings? Yes, if the old coating is compatible and properly prepared; otherwise, removal or selective priming may be required.
- Will a reflective coating lower my energy bills? Reflectivity reduces heat gain, potentially lowering cooling costs, especially on sun-exposed roofs.
- Is this product safe for indoor exposure? Low-VOC formulations are available, but always follow the safety data sheet and ventilation guidance.