Existing condition
Understand the wall or roof, existing coatings, defects, exposure and any moisture problem before choosing a material.
Spray cork & render comparison · ECOPROCORK®
Explore how ECOPROCORK® SLICS™ compares with silicone, monocouche and sand-and-cement render. See the differences at a glance, then check the technical data for your project.
Define the brief first
A decorative finish is not the same as a whole-wall insulation upgrade. Equally, an insulation system must still be detailed and finished appropriately for the building.
Understand the wall or roof, existing coatings, defects, exposure and any moisture problem before choosing a material.
Set out the appearance, thermal objective, available space, maintenance expectations and project constraints.
Compare preparation, components, thickness, detailing, application, evidence and written warranty terms.
The spray-cork advantage
SLICS™ brings cork’s thermal properties, flexibility and a coloured finish together in a thin coating. See where it differs from conventional render options.
On smaller screens, swipe the matrix sideways to compare every option.
| What matters | ECOPROCORK® Spray cork SLICS™Decoproyec® cork coating | Silicone renderThin-coat system | Monocouche renderThrough-coloured cement | Sand & cement renderTraditional / premixed |
|---|---|---|---|---|
| Natural cork content | Cork-based coatingRenewable cork ingredient | No cork aggregate | No cork aggregate | No cork aggregate |
| Thermal function of the finish | Thermal cork coatingDeclared λ: 0.050 W/m·K¹ | Decorative topcoatInsulation is a separate layer | Decorative renderNot a dedicated insulation layer | Base renderNot a dedicated insulation layer |
| Low build-up | Approx. 3 mm coating²On a suitable prepared surface | Thin topcoatPlus the required basecoat | Typically 15–25 mmFinish and exposure dependent | Typically 16–20 mmExternal render, before decoration |
| Flexibility | Elastic coating34.6% elongation at break¹ | Flexible optionsCheck the selected system | Cement-based renderMovement detailing matters | Cement-based renderMovement detailing matters |
| Water-vapour permeability | Vapour permeable¹ | Vapour permeablewebersil TF example | Check specificationProduct and build-up dependent | Breathable renderweberend OCR example |
| Colour in the finish | Coloured cork texture | Coloured finish | Through-coloured | Separate decorationPaint or decorative finish |
| Exterior weather protection | Specified cork systemPreparation and detailing required | Water-repellent finish | Weather-resistant render | Weather-resistant render |
| Lichen & moss resistance | Resists lichen & mossSupported by ECOPROCORK case studies | Check specificationConfirm for the selected product | Check specificationConfirm for the selected product | Check specificationConfirm for the selected product |
Why choose SLICS™? A cork-based, flexible finish with minimal added thickness—an option worth considering when refurbishing a suitable existing surface without a thick render build-up.
¹ Manufacturer-declared product properties, not whole-wall performance. A thin cork coating adds limited thermal resistance; it does not replace external or internal wall insulation or establish an energy-saving percentage. Flexibility does not make a coating crack-proof: existing cracks and defects must be repaired.
² Approximate coating thickness only; preparation, primers and any supporting layers depend on the project. All options require a sound, suitable substrate. Weather protection depends on the complete specification; the cork layer alone is not a roof waterproofing system. The coating contains cork, binder and other ingredients.
Check the exact specifications
Check the figures, application conditions and limitations for the product you are considering. These render examples support the comparison; individual products within each category vary.
Decoproyec® sprayed cork product data, hosted by ECOPROCORK.
Download spray-cork data sheet ↗Weber webersil TF. Representative thin-coat finish.
Download silicone data sheet ↗Weber weberpral M. Representative through-coloured render.
Download monocouche data sheet ↗Weber weberend OCR. Premixed sand-and-cement example.
Download cement-render data sheet ↗PDFs open in a new tab for viewing or downloading. The spray-cork PDF is the published V1 document; confirm the applicable revision and full SLICS™ specification with ECOPROCORK before use. The manufacturer’s online product data is marked updated 24 January 2026. If documents differ, request written clarification for your application.
Evidence before claims
Ask the same questions of every proposed system so that the comparison remains useful and fair.
Technical informationYour next step
Share the property type, location, photographs and intended work. We can discuss the appropriate ECOPROCORK route and the evidence needed before a specification is agreed.
Manufacturer guidance explains the distinction between monocouche and silicone render systems and the components of an acrylic render system. The Energy Saving Trust explains internal and external solid-wall insulation. These references describe categories and examples; they do not certify an ECOPROCORK installation.
Guide reviewed October 2026. For ECOPROCORK product and system evidence, request the current documents for your proposed application.