{ "type": "produit", "lang": "en", "translation_of": "covaseal-20", "slug": "covaseal-20", "title": "CovaSeal 20", "status": "publish", "seo": { "titre_seo": "CovaSeal 20 Reflective Waterproofing Roof Coating for Commercial Flat Roofs | Covalba", "meta_description": "CovaSeal 20, Covalba's 2-in-1 reflective waterproofing roof coating for commercial flat roofs. Liquid waterproofing, up to 10°C cooler indoors, 20-year warranty.", "canonical": "https://www.covalba.fr/en/solutions/covaseal-20" }, "fiche_produit": { "product_name": "CovaSeal 20", "tagline": "The liquid reflective waterproofing roof coating.", "accent_color": "#e18300", "garantie": "20 years", "sri": "107 (new condition)", "prix": "€20 to €25/m²" }, "sections": [ { "layout": "hero", "origine": "ProductHeroCovaSeal", "variante": "standard", "eyebrow": "Professional reflective waterproofing roof coating", "titre": "CovaSeal 20", "lead": "Elastomeric acrylic resin with anti-UV Top Coat, by Covalba. One pass restores your roof's waterproofing and delivers up to 10°C cooler indoors, with a 20-year warranty.", "image": { "path": "assets/produits/covaseal-hero.webp", "alt": "Roller application of the CovaSeal 20 reflective waterproofing roof coating on an industrial roof" }, "stats": [ { "value": "-8 to -10°C", "label": "Indoor temperature" }, { "value": "20 years", "label": "of waterproofing + reflective coating" }, { "value": "2-in-1", "label": "Waterproofing + reflective coating" } ], "badges": [ { "texte": "SRI 107" }, { "texte": "20-year warranty" }, { "texte": "Available to order" } ], "cta_primaire": { "label": "Request a quote", "lien": "/en/diagnostic", "style": "primary" }, "cta_secondaire": { "label": "Download the technical data sheet", "lien": "#specs", "style": "secondary" } }, { "layout": "texte_image", "origine": "CovaSealShowcase", "entete": { "badge": "Positioning", "titre": "CovaSeal 20, *the liquid reflective waterproofing roof coating.*" }, "contenu": "

A 2-coat waterproof roof coating that pairs the thermal performance of a reflective coating with an elastomeric acrylic polyurethane waterproofing layer in a single application. Built for roofs with micro-cracks, blistering, or minor infiltration. Fills cracks up to 2 mm, seals, and cools without a full overhaul.

  1. Base Coat — liquid reflective waterproofing roof coating (2 to 3 kg/m²).
  2. Top Coat — high-durability anti-soiling finish.
", "image": { "path": "assets/produits/Covalba-CovaSeal20-Duo-Produit.webp", "alt": "CovaSeal 20 system: Base Coat and Top Coat tubs, Covalba liquid reflective waterproofing roof coating" }, "position_image": "droite", "note": "Unsure between CovaSeal and CovaTherm? Our experts will guide you to the right solution.", "cta": { "label": "Request a quote", "lien": "/en/diagnostic", "style": "primary" } }, { "layout": "compatibilite_supports", "origine": "CompatibilityTabsCovaSeal", "entete": { "badge": "Compatibility", "titre": "Compatible substrates *with CovaSeal 20.*" }, "supports": [ { "type": "Bituminous waterproofing", "detail": "Aging bituminous membrane, installed more than a year ago.", "image": { "path": "assets/produits/compat-bitume.webp", "alt": "Illustration Bituminous waterproofing" } }, { "type": "EPDM membrane", "detail": "EPDM rubber membrane over 10 years old, with prior adhesion testing.", "image": { "path": "assets/produits/compat-epdm.webp", "alt": "Illustration EPDM membrane" } }, { "type": "PVC membrane", "detail": "Synthetic PVC membrane over 10 years old, with prior surface preparation.", "image": { "path": "assets/produits/compat-pvc.webp", "alt": "Illustration PVC membrane" } }, { "type": "Tiles", "detail": "Clay or concrete tiles, slightly pitched, in good structural condition.", "image": { "path": "assets/produits/compat-tuile.webp", "alt": "Illustration Tiles" } }, { "type": "Slate", "detail": "Slate roofs with moderate slope, without major breakage.", "image": { "path": "assets/produits/compat-ardoise.webp", "alt": "Illustration Slate" } }, { "type": "Fiber cement", "detail": "Compatible porous surface, without exposed fibers, after a technical assessment.", "image": { "path": "assets/produits/compat-fibrociment.webp", "alt": "Illustration Fiber cement" } } ], "note_couverture": "A reflective waterproofing roof coating only delivers on its promise if it bonds for the long haul to the substrate.", "rendu": "tabs" }, { "layout": "specs_techniques", "origine": "CovaSealSpecs", "entete": { "badge": "Technical specifications", "titre": "The specifications *of CovaSeal 20.*", "intro": "Waterproofing, reflective performance, durability over two decades. CovaSeal 20 is built for industrial and commercial flat roofs that need both at once, with no heavy renovation." }, "colonnes_specs": [ { "nom": "CovaSeal 20" } ], "lignes_specs": [ { "label": "Technology", "valeurs": [ { "texte": "Elastomeric acrylic resin\n+ anti-UV Top Coat finish" } ] }, { "label": "Substrates", "valeurs": [ { "texte": "Bitumen > 1 year\nEPDM and PVC > 10 years\nTiles, slate, fiber cement" } ] }, { "label": "Reflectivity index — SRI (new condition)", "valeurs": [ { "texte": "107" } ] }, { "label": "Coating system", "valeurs": [ { "texte": "Base Coat 2 to 3 kg/m²\n+ optional reinforcement fleece\n+ Top Coat" } ] }, { "label": "Maintenance coat to plan within", "valeurs": [ { "texte": "20 years" } ] }, { "label": "Enhanced protection against soiling", "valeurs": [ { "texte": "yes" } ] }, { "label": "Application", "valeurs": [ { "texte": "By a professional applicator" } ] } ], "colonne_mise_en_avant": 1 }, { "layout": "certifications", "origine": "CovaSealCertifications", "entete": { "badge": "Certifications", "titre": "Certifications and *technical performance.*", "intro": "CovaSeal 20 meets the technical and environmental requirements of professional buildings. Broof(t3) fire classification, certified elastomeric resin, low-VOC formulation: every application is backed by a demanding technical framework." }, "items_certifications": [ { "nom": "Broof(t3)", "description": "External fire resistance classification, the most demanding level for roof waterproofing." }, { "nom": "UV resistance", "description": "Anti-UV Top Coat that stabilizes whiteness and reflectivity over two decades." }, { "nom": "Elastomeric resin", "description": "Continuous, flexible, and waterproof film that follows the thermal expansion of the substrate." }, { "nom": "Ponding-water resistance", "description": "Formulated to withstand water retention on flat or very low-slope roofs." }, { "nom": "20-year warranty", "description": "Waterproofing and reflective performance guaranteed over two decades." }, { "nom": "Low-VOC formulation", "description": "Compliant with the environmental requirements of high-performance buildings." } ] }, { "layout": "grille_cards", "origine": "CovaSealAdvantages", "entete": { "badge": "Advantages", "titre": "The advantages of the CovaSeal 20 *reflective waterproofing roof coating.*", "intro": "Coat a tired roof with CovaSeal 20 and you get a double effect from the very first summer: waterproofing is restored and the indoor temperature drops measurably. Here are the six benefits we see in the field, backed by figures." }, "cards": [ { "icone": "shield-check", "titre": "Waterproofing restored in a single application", "texte": "Fills micro-cracks up to 2 mm and creates a continuous waterproof film, with no dismantling or heavy overhaul. 20-year warranty." }, { "icone": "users", "titre": "A better working environment", "texte": "Up to 8 to 10°C cooler indoors without air conditioning. A warehouse at 40°C drops back to around 30°C." }, { "icone": "zap", "titre": "Lower electricity bill", "texte": "Air-conditioning consumption halved in some cases, 15 to 40% savings depending on the activity. Average ROI of 14 months." }, { "icone": "euro", "titre": "Costs a fraction of a full renovation", "texte": "€20 to €25/m² versus €80 to €100/m² for a new membrane, and up to €150/m² for an insulation + waterproofing replacement." }, { "icone": "clock", "titre": "Goes on with no downtime", "texte": "Sprayed from the ground, machines at the foot of the building, hoses alone on the roof. No load, no vibration." }, { "icone": "sun", "titre": "Extends the lifespan of the waterproofing", "texte": "Protects against UV and thermal shock, and limits expansion-contraction cycles. Pushes back the replacement investment by 8 to 10 years." } ], "colonnes": "2", "theme": "sombre" }, { "layout": "tableau_comparatif", "origine": "CovaSealComparison", "entete": { "badge": "Comparison", "titre": "Reflective waterproofing roof coating or *full overhaul?*", "intro": "Choosing between CovaSeal 20 and a full waterproofing overhaul comes down to the condition of the roof, the budget on hand, and how fast you need payback. Here are the criteria that matter." }, "entetes_colonnes": [ { "texte": "CovaSeal 20" }, { "texte": "New membrane" }, { "texte": "Insulation + waterproofing" } ], "lignes_comparatif": [ { "cellules": [ { "texte": "Cost per m²" }, { "texte": "€20 to €25" }, { "texte": "€80 to €100" }, { "texte": "≈ €150" } ] }, { "cellules": [ { "texte": "Application time" }, { "texte": "3 to 5 days" }, { "texte": "2 to 4 weeks" }, { "texte": "3 to 6 weeks" } ] }, { "cellules": [ { "texte": "Reflective effect" }, { "texte": "up to -10°C" }, { "texte": "Depending on color" }, { "texte": "Depending on insulation" } ] }, { "cellules": [ { "texte": "Lifespan" }, { "texte": "20 years" }, { "texte": "15 to 20 years" }, { "texte": "20 to 30 years" } ] }, { "cellules": [ { "texte": "Interruption of operations" }, { "texte": "No" }, { "texte": "Yes" }, { "texte": "Yes" } ] }, { "cellules": [ { "texte": "Micro-cracks treated" }, { "texte": "up to 2 mm" }, { "texte": "Full overhaul" }, { "texte": "Full overhaul" } ] }, { "cellules": [ { "texte": "Dismantling existing" }, { "texte": "No" }, { "texte": "Yes" }, { "texte": "Yes" } ] }, { "cellules": [ { "texte": "Average ROI" }, { "texte": "14 months" }, { "texte": "3 to 5 years" }, { "texte": "8 to 12 years" } ] } ], "colonne_mise_en_avant": 1, "texte_apres": "CovaSeal 20 pays back the fastest, with no dismantling and no downtime. It is the go-to choice for industrial, pharmaceutical, food-processing, aerospace, and commercial buildings whose roof is tired but still usable. For a metal roof such as steel deck, the CovaMetal 20 reflective roof coating for steel deck is better suited.", "cta": { "label": "Request a quote", "lien": "/en/diagnostic", "style": "primary" } }, { "layout": "faq", "origine": "ProductFAQCovaSeal", "entete": { "badge": "FAQ", "titre": "Your questions about CovaSeal 20", "intro": "A question not listed here? Call us or request a quote." }, "questions": [ { "question": "CovaSeal 20 or CovaTherm: how to choose?", "reponse": "CovaTherm is a pure reflective roof coating, built for sound roofs that just need to gain thermal performance. CovaSeal 20 combines a reflective finish and liquid waterproofing in one product. You use it when the roof has micro-cracks, blistering, or minor infiltration that does not justify a full renovation. A technical assessment lets you choose between the two based on the real condition of your roof." }, { "question": "Can a full waterproofing renovation be avoided?", "reponse": "Yes, for roofs that are tired but not yet failing. The system fills micro-cracks up to 2 mm, creates a continuous waterproof film, and extends the lifespan of the existing waterproofing by 8 to 10 years. For a roof with massive infiltration, detached sheets, or an out-of-date waterproofing system, however, a full overhaul remains essential. The on-site assessment makes the decision." }, { "question": "Does a roof coated with CovaSeal 20 raise heating bills in winter?", "reponse": "This is the question we hear most, and the answer is no. In winter the sun sits low and is rarely out, so it warms vertical facades far more than the horizontal roof. The lost solar gain on the roof stays small, limited to a few hours a day in the shoulder seasons, and is largely offset by the heat you save through the hot months. Over a full year, CovaSeal 20 cuts the building's bill in the vast majority of cases." }, { "question": "Does the product hold up where water stands?", "reponse": "Yes. Where a conventional reflective coating needs a minimum slope of 3%, the elastomeric acrylic resin in CovaSeal 20 is built to sit under standing water and ponding. We developed it specifically for flat or very low-slope roofs." }, { "question": "What does a waterproof roof coating cost per m²?", "reponse": "A professional reflective waterproofing roof coating, installed, runs €20 to €25 per square meter, all-inclusive: assessment, substrate prep, supply, and application. Three things move the final figure: the area to coat (volume discounts beyond 2,000 m²), the condition of the substrate (any spot repairs or reinforcement fleece), and the complexity of the roof (upstands, drains, penetrations)." }, { "question": "How much product should be planned for 1,000 m²?", "reponse": "The complete system consists of a Base Coat dosed at 2 to 3 kg/m², an optional reinforcement fleece on sensitive areas, and an anti-UV Top Coat. For a surface of 1,000 m², plan on between 2 and 3 tons of Base Coat, plus the Top Coat quantities defined in the quote depending on the condition of the substrate." }, { "question": "Must CovaSeal 20 be applied by a professional?", "reponse": "Yes, for two reasons. First, the quality of the application directly determines the performance of the waterproofing over 20 years: a layer that's too thin, a poorly embedded fleece, or application in humid weather, and the system no longer delivers on its promise. Second, working on a roof requires protective equipment, training, and suitable gear. Covalba recommends having the coating applied by a professional applicator trained on its products, which is a condition of the manufacturer warranty." }, { "question": "What maintenance does a waterproof roof coating need?", "reponse": "The anti-UV Top Coat on CovaSeal 20 is self-cleaning. We recommend an annual inspection and a water rinse to clear particles and keep solar reflection at its best. No chemicals needed." } ], "json_ld": true, "cta": { "label": "Free quote", "lien": "/en/diagnostic", "style": "ghost" } }, { "layout": "contenu_seo", "origine": "CovaSealEditorial", "intro": "

Reflective waterproofing roof coating, waterproof roof coating, roof waterproofing paint, elastomeric resin, reflective liquid coating: several names for the same family of products that combine waterproofing and solar reflectivity. Used to renovate tired roofs without a full replacement, a reflective waterproofing roof coating costs a fraction of a full overhaul when the budget won't stretch to one. It is also the smart move when the roof isn't degraded enough to justify one yet.

", "sections": [ { "titre": "How a reflective waterproofing roof coating works", "contenu": "

A reflective waterproofing roof coating combines two technical mechanisms on the same substrate.

The anti-UV Top Coat completes the system. It protects the resin from ultraviolet rays, stabilizes whiteness, and prevents chalking over 20 years.

" }, { "titre": "The roofs CovaSeal 20 was designed for", "contenu": "

CovaSeal 20 is the reflective waterproofing roof coating suited to the following situations:

For a sound roof that only needs the reflective effect, the pure reflective coating CovaTherm is the better fit. On the other hand, for an out-of-date roof with massive infiltration and detached sheets, a full overhaul has to come first.

" }, { "titre": "The budget for a reflective waterproofing roof coating per square meter", "contenu": "

A professional reflective waterproofing roof coating, installed, runs on average between €20 and €25 per square meter, all-inclusive: assessment, substrate prep, supply, and application. Three things move the final figure:

Compared with traditional alternatives, the gap is clear-cut:

CovaSeal 20 cuts the renovation budget by 4 to 7 times, and throws in the reflective effect and a 20-year warranty. You can estimate the savings of a reflective waterproofing roof coating on your building.

" }, { "titre": "What an application involves", "contenu": "

A reflective waterproofing roof coating goes on in five controlled steps, carried out by trained professional applicators.

  1. Technical assessment. A technician evaluates the condition of the substrate, measures moisture, locates micro-cracks and water-retention areas, and checks material compatibility. Get the assessment wrong and the coating blisters or fails to waterproof.
  2. High-pressure cleaning. The roof is cleared of moss, dust, and residue with a high-pressure cleaner, without stripping. This step is what makes the coating bond for the long haul.
  3. Base Coat application. The waterproofing layer is sprayed on from the ground, at a rate of 2 to 3 kg/m². The machines stay at the foot of the building, only the hoses go up onto the roof.
  4. Optional reinforcement fleece. On sensitive areas (penetrations, upstands, joints), a polyester fleece is embedded in the resin to double the mechanical hold.
  5. Top Coat application. The anti-UV finish seals the system and guarantees reflectivity over two decades.

The application is carried out in dry weather, between 10 and 35 °C. A typical 1,000 m² application is completed in 3 to 5 days, with no downtime for the building.

" }, { "titre": "The protective effect of a reflective coating on the existing waterproofing", "contenu": "

On a conventional dark roof, the surface can hit 80°C at the height of summer. That heat speeds up membrane aging three ways: it absorbs ultraviolet rays, expands the materials, and drives repeated day/night expansion-contraction cycles. Research on the aging of roof coatings is clear that ultraviolet is the main driver of degradation in non-metallic materials, and the process leans heavily on temperature: the wider the daily swings, the faster it ages (Miller, Kriner & Desjarlais, 2002).

By taking the heat out of the roof surface, a reflective waterproofing roof coating sharply limits all three. Field trials run by the Lawrence Berkeley National Laboratory on commercial buildings showed the surface temperature drop from 79°C to 49°C after a reflective coating went on (Akbari, Berdahl, Levinson et al., 2005). Less heat absorbed means less expansion, fewer cracks, and a waterproofing lifespan extended by 8 to 10 years.

" }, { "titre": "A concrete lever against urban heat islands", "contenu": "

Beyond the direct benefits for the building, a reflective waterproofing roof coating helps cut the urban heat island effect — the reason city centers run on average 2 to 10°C hotter than the surrounding countryside. Dark roofs and pavements drive this by soaking up solar radiation and releasing it as heat.

Research on urban cooling shows that adopting reflective roofs across a city can lower the ambient temperature and, with it, the energy demand tied to air conditioning (Santamouris, 2014). One study even estimated that, at the urban scale, rolling out reflective roofs could cut heatwave-related mortality by 18%. Coat an industrial or commercial building with CovaSeal 20 and you join that collective effort while gaining indoor comfort.

" } ], "sources": [ { "label": "Akbari, H., Berdahl, P., Levinson, R., Wiel, S., Miller, W., & Desjarlais, A. (2005). Aging and Weathering of Reflective Roofing Membranes. Lawrence Berkeley National Laboratory / U.S. Department of Energy.", "url": "https://www.osti.gov/servlets/purl/860745" }, { "label": "Santamouris, M. (2014). Cooling the cities — a review of reflective and green roof mitigation technologies to fight heat island and improve comfort in urban environments. Solar Energy, 103, 682-703.", "url": "https://doi.org/10.1016/j.solener.2012.07.003" }, { "label": "Synnefa, A., Santamouris, M., & Akbari, H. (2007). Estimating the effect of using cool coatings on energy loads and thermal comfort in residential buildings in various climatic conditions. Energy and Buildings, 39(11), 1167-1174.", "url": "https://doi.org/10.1016/j.enbuild.2007.01.004" }, { "label": "U.S. Environmental Protection Agency (2024). Using Reflective Roofs to Reduce Heat Islands.", "url": "https://www.epa.gov/heatislands/using-cool-roofs-reduce-heat-islands" } ], "replie": false }, { "layout": "cta", "origine": "CTASection", "variante": "final", "titre": "What will it cost to coat your roof?", "texte": "Get a tailored estimate for your project in under 48h. We reply within 24h, no commitment.", "cta_primaire": { "label": "Request a quote", "lien": "/en/diagnostic", "style": "primary" }, "cta_secondaire": { "label": "Estimate my budget", "lien": "/en/estimation", "style": "secondary" } }, { "layout": "grille_solutions", "origine": "RelatedProductsCovaSeal", "entete": { "badge": "Other solutions", "titre": "Also discover" }, "produits": [ "covatherm", "covametal-20", "covatherm-light" ], "affichage": "cards" }, { "layout": "texte_image", "origine": "ApplicatorsSection", "entete": { "badge": "Distributors & partners", "titre": "Distribute Covalba reflective roof coatings" }, "contenu": "

Are you a materials distributor, a waterproofing merchant or a roofing company? Stock our reflective roof coatings and give your customers a high-performance solution.

", "liste": [ { "texte": "Direct manufacturer supply at the best terms" }, { "texte": "Dedicated technical support and product training" }, { "texte": "Documentation, technical data sheets and sales support" } ], "image": { "path": "remote/9a4cb6d18cee.jpg", "alt": "Covalba reflective roof coatings for distributors and partners" }, "position_image": "droite", "cta": { "label": "Become a partner", "lien": "/en/devenir-applicateur", "style": "secondary" } } ] }