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  • Where does cork come from?
    A: Cork comes primarily from the bark of cork oak trees (Quercus Suberin), mainly grown in Portugal, Spain, Algeria, and Morocco. The harvesting process is sustainable, as trees can be harvested every 9-14 years without being cut down, making it an environmentally friendly choice.
  • Is cork harvesting sustainable?
    A: Yes. Cork harvesting actually benefits the environment. When bark is stripped, it triggers the tree to absorb more CO2 during regeneration, making cork products carbon negative. Trees can live for over 200 years while being harvested multiple times.
  • How long does cork spray insulation last?
    A: Cork spray installations can last 25+ years with proper application. The product comes with a 12-month workmanship warranty and a 10-year product warranty, demonstrating its long-term durability.
  • What makes cork spray such an effective insulator?
    Cork spray's effectiveness comes from: Natural thermal properties that retain heat Seamless application preventing thermal bridges Air-tight coverage R-value of 0.058 Up to 8x more thermal efficiency than traditional renders
  • What are the main advantages of cork spray insulation?
    Key benefits include: Superior thermal and acoustic insulation Fire resistance (Euro-class B rating) Moisture control and anti-condensation properties Natural and eco-friendly composition Minimal maintenance requirements Wide range of colour options Excellent adhesion to various surfaces
  • How is cork spray applied?
    The application process involves: Surface preparation Application using specialised spray equipment Multiple coating layers for optimal performance Final protective finish coating
  • What surfaces can cork spray be applied to?
    Cork spray can be applied to: Asbestos sheets Stone walls Ceramic tiles Metal sheets Wood panels Most building materials
  • How much does cork spray insulation cost?
    Pricing typically ranges from £65-80 per square meter. While the initial investment may be higher than some alternatives, the long-term energy savings and durability make it cost-effective over time.
  • What colours are available for cork spray?
    Over 30 pre-coloured options are available, plus any RAL colour at additional cost. Options range from natural tones like traffic white, linen and ivory, to modern greys like stone and pewter to bold colours like sage and brick
  • How weather-resistant is cork spray?
    Cork spray is highly weather-resistant due to its: Natural water-repellent properties Breathable composition Ability to prevent condensation Durability in various climate conditions
  • How long does cork spray installation take?
    Installation timeframes vary: Interior projects: Typically 2 days Exterior projects: 3 days to 3 weeks, depending on project scope Drying time is factored into these timeframes
  • Who can install cork spray insulation?
    Installation should be done by certified professionals through the Trusted Applicator Programme. TIWI CorkSpray provides comprehensive training and community support for certified installers.
  • Is cork spray environmentally friendly?
    Yes, cork spray is: Carbon negative Made from sustainable natural materials Requires no harmful chemicals in production Helps reduce building energy consumption Supports sustainable cork forest management Removed Co2 out the atmosphere during harvesting Good for the planet
  • How does cork spray help reduce carbon footprint?
    Cork spray reduces carbon footprint through: Carbon-negative production process Improved building energy efficiency Sustainable harvesting methods Reduced heating/cooling needs Long lifespan reducing replacement needs
  • How does cork spray compare to traditional insulation?
    Cork spray offers: Better insulation values at thinner depths Seamless application without thermal bridges Natural moisture control properties Both thermal and acoustic insulation No toxic materials or off-gassing
  • Can cork spray help with damp and mould issues?
    Yes, cork spray effectively manages moisture because: It's naturally water-resistant due to Suberin and Lignin content Allows walls to breathe while remaining waterproof Prevents condensation build-up Creates an effective moisture barrier Helps regulate indoor humidity levels
  • Can cork spray be used for roof insulation?
    Yes, cork spray is suitable for: Corrugated roofs Industrial roofing Asbestos roof encapsulation We have a product for flat roofs called XF MAP [ CLICK HERE ]
  • Is cork spray suitable for historic buildings?
    Yes, cork spray is ideal for historic buildings because: It's breathable and allows moisture regulation Can be applied to various traditional materials Preserves historical character Available in heritage-appropriate colours Non-invasive application process
  • What maintenance does cork spray require?
    Cork spray is low-maintenance: No regular upkeep needed Naturally resistant to weather damage Self-maintaining surface properties Long-lasting color stability Durable against physical impact
  • What warranties come with cork spray installation?
    TIWI CorkSpray provides: 12-month workmanship warranty for work carried out by TIWI CorkSpray 10-year product warranty Professional installation guarantees Technical support throughout warranty period
  • What support is available after installation?
    TIWI CorkSpray offers: Direct customer support from the founder Technical guidance WhatsApp community access Professional follow-up service Documentation and certification
  • What's new in cork spray technology?
    Recent developments include: CorkWall: New trowel-able material for smooth surfaces Enhanced colour options Improved application techniques Working towards BBA certification Continuous R&D for product improvement
  • What are the potential disadvantages of cork spray insulation?
    While cork spray is highly effective, there are some considerations: Higher initial cost compared to traditional insulation Requires professional installation Direct sunlight exposure can affect properties over time Limited number of certified installers However, these are outweighed by the long-term benefits and durability.
  • How does cork spray compare to spray foam insulation?
    Key comparisons include: Cork spray is eco-friendly; spray foam contains chemicals Cork allows walls to breathe; foam creates an airtight seal Cork offers better acoustic properties Cork is naturally fire-resistant Cork provides both thermal and moisture regulation Cork has a longer lifespan (25+ years)
  • What energy savings can I expect with cork spray insulation?
    Energy savings vary but typically include: Up to 30% reduction in heating/cooling costs Improved thermal efficiency (8x better than traditional renders) Reduced carbon footprint Lower energy emissions through walls ROI typically achieved within 3-5 years
  • What thickness of cork spray is needed for effective insulation?
    Requirements vary by application: Internal walls: 6mm typical thickness (with plastered finish) External walls: 9-18mm recommended (with render basecoat) Roof applications: 3mm standard (With XF MAP 6-8mm) All thicknesses provide effective R-value of 0.058
  • Can cork spray be applied over existing insulation?
    Yes, cork spray can be: Applied over most existing surfaces Used to enhance current insulation Combined with other insulation methods Applied without removing old materials Used for retrofit projects
  • What preparation is needed before cork spray installation?
    Preparation includes: Surface cleaning and inspection Repair of any existing damage Protection of windows and doors Weather consideration for external applications Moisture level assessment Temperature and humidity checks
  • What certifications does cork spray insulation have?
    Our Cork Spray only holds: ICC certification Working towards BBA certification EN Standard ISO 9001 Fire resistance ratings (Euro-class B) Environmental compliance certificates Professional installation certifications
  • How does cork spray perform in different weather conditions?
    Cork spray excels in various conditions: Resistant to rain and moisture Performs well in high humidity Maintains properties in temperature extremes UV resistant with proper application Adapts to seasonal changes Maintains thermal properties year-round
  • How does cork spray compare to traditional Internal Wall Insulation (IWI)?
    Key differences include: Space Saving: Cork spray needs only 3 vs 50-300mm for traditional IWI No Thermal Bridges: Seamless application eliminates cold spots and creates airtightness Installation Time: 2 days for cork spray vs 1-2 weeks for traditional IWI Room Size: Maintains original room dimensions unlike thick IWI panels Moisture Control: Natural breathing properties vs potential condensation issues Installation Disruption: Minimal vs major internal disruption
  • What advantages does cork spray have over External Wall Insulation (EWI)?
    Cork spray offers: Thinner Profile: 3mm vs 50-300mm for EWI blocks Cost Efficiency: £65-£80/m² vs £150-£250/m² for standard EWI Planning Permission: Usually not required due to minimal thickness Application Versatility: Can be applied to complex architectural features Maintenance: Minimal vs Regular EWI maintenance requirements Durable: Robust material compared to soft insulation board, which can be damaged and can’t be patched.
  • How does cork spray address thermal bridging issues?
    Cork spray eliminates thermal bridges through: Seamless Application: No joints or gaps in coverage Complete Surface Contact: Bonds directly to all surface areas Continuous Insulation: Wraps around corners and edges Detail Coverage: Insulates window reveals and door frames Uniform Performance: Consistent R-value across entire surface Three-Dimensional Protection: Covers all angles and junctions
  • Why are thermal bridges important to address?
    Thermal bridges impact buildings by: Causing up to 30% heat loss in poorly insulated buildings Creating cold spots that lead to condensation Increasing energy bills due to heat escape Contributing to mould growth Reducing overall insulation effectiveness
  • How much living space do you lose with cork spray insulation?
    Minimal space impact: - Internal applications: Only 3mm thickness (plus 3mm plaster) No loss of usable floor space Maintains room dimensions Preserves original architectural features No need to reposition electrical outlets No adjustment needed for window sills or door frames No adjustments needed to coving, architrave or skirting boards
  • How does cork spray's thickness compare to other insulation methods?
    Thickness comparison: Cork Spray: 3mm Traditional EWI: 50-300mm Rigid Board IWI: 40-100mm Mineral Wool: 50-300mm PIR Boards: 50-120mm Spray Foam: Open Cell: 70-250mm (walls 3" min, roof 6-10”) Closed Cell: 50-125mm (walls 2-3", roof 4-5")25-100mm
  • How does cork spray's thermal performance compare to other materials?
    Performance metrics: R-value: 0.058 at minimal thickness Heat Retention: Up to 8x more efficient than traditional renders Thermal Mass: Better heat storage than synthetic materials Temperature Regulation: More stable than foam alternatives Energy Efficiency: Superior performance at thinner depths Long-term Performance: Maintains properties for 25+ years
  • What makes cork spray more effective than traditional insulation methods?
    Key effectiveness factors: Natural Cell Structure: Millions of air-filled cells provide insulation Seamless Coverage: No joints or connection points Multi-functional: Combines thermal, acoustic, and moisture control Adaptable Application: Conforms to any surface shape Breathable Material: Prevents moisture trapping Carbon Negative: Only insulation that actively reduces carbon footprint
  • How does cork spray installation differ from traditional methods?
    Installation differences: Duration: 2-3 days vs 1-2 weeks for traditional methods Disruption: Minimal vs major building works Preparation: Less intensive surface preparation required Clean-up: Minimal waste and debris No plasterboard sat in landfill Immediate Use: Faster return to normal building use
  • What are the technical specifications of Cork Spray?
    Key specifications include: Thermal Resistance (R-value): 0.058 Application Thickness: 3-8mm Fire Rating: Euro-class B Density: 170-190 kg/m³ Adhesion Strength: >0.5 N/mm² Water Vapour Permeability: Class V2 VOC Content: <1 g/L Sound Reduction: Up to 38dB
  • What makes TIWI CorkSpray different from other spray cork products?
    TIWI CorkSpray, manufactured by Vipeq Hispania, offers: Superior thermal conductivity of 0.058 W/mK at 3mm thick not 6mm ICC certified BBA certification in progress Carbon-negative manufacturing process Professional-grade formulation with proprietary resin technology Exclusive UK distribution rights UK’s first trowel on Cork material First Cork Spray coating in the UK.
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