Kerakoll Benesserebio thermal cell moisture-proof insulating bio plaster

Brand: Kerakoll 🇮🇹

Thermal cell, heat-insulating, moisture-absorbing bio-plaster

Price
16.650 Ft
Unit price 925 Ft  per  kg
Size:18 kg
Condition:Normal
In stock, deliverable within 48 hours!
Do you have any questions?
Our Kerakoll technical advisor will help you choose the right product.

✓ Reduced pollution
✓ Bacteriostatic
✓ Low VOC emissions
✓ CO2 emissions ≤ 250 g/kg
✓ Recycled regional mineral material ≥ 30%

Mold in the corner, condensation on the cold wall? Moisture condenses on the cold surface — mold forms. Benesserebio provides a wall surface 3 °C warmer, so vapor does not condense. Thermal cell technology: dries, insulates, saves energy. This is Kerakoll Benesserebio.

  • Mold and condensation on cold walls: surface 3 °C warmer — the thermal cell technology eliminates the risk of condensation
  • Cold, energy-consuming wall: 30% energy savings compared to traditional masonry — the thin layer acts as a micro-thermal insulating system, λ 0.14 W/(mK)
  • Wet, saltpetre wall: 250% evaporation capacity — expels water in vapor form, 2.5 times more effective than traditional remediation plaster
  • Expensive remediation plaster: 55–100% larger surface from the same amount of material — lightweight, high-yield mix (≈ 0.75 kg/dm³)
  • Rising damp, capillary wetting: targeted drying — R and T (restorative and thermal insulating) mortar, vapor permeable according to EN ISO 13788
  • Pure NHL 3.5 lime + geo-binder: natural and salt-protected — micronized pozzolan against salts, low CO₂ and VOC
  • Fireproof: A1 fire resistance class — fire protection effect due to its bulk density
  • Part of the system: for high salt content, the Biocalce Rinzaffo preparatory layer, the surface can be sealed with Biocalce smoothing and breathable paint
Product family Kerakoll moisture-proofing system (Rinzaffo + Zoccolatura + Benesserebio)
Type restorative and thermal insulating mortar, R – T (EN 998-1)
Thermal conductivity (λ) 0.14 W/(m·K) — thermal insulating
Vapor diffusion (μ) 5 — highly breathable
Material requirement ≈ 6.5 kg/m²/cm
Minimum achievable layer thickness ≈ 1 cm
Layer thickness in case of capillary wetting minimum 2 cm
Maximum layer thickness per coat ≈ 4 cm
Packaging 18 kg bag
Storage ≈ 12 months

What is it suitable for?

Wall types: All wall types — brick, tuff, stone, adobe, concrete, cellular cement panel*, wood concrete, and mixed masonry, both exterior and interior. Walls exposed to moisture, capillary wetting, and temperature fluctuations.

Usage: Temperature moisture drying against capillary moisture and condensation. Elimination of thermal bridges and mold. Bio-architecture, monument restoration, and renovation of adobe walls. *Only as thermal insulating plaster on cellular cement panels.

Not suitable for:

  • On contaminated, loose, dusty substrates
  • On old paint or existing leveling
  • In basement rooms exposed to water leakage
  • On horizontal surfaces exposed to standing water touching floors or sidewalks without separation

The Kerakoll moisture barrier system

Benesserebio works independently as a moisture barrier and thermal insulation plaster, but on substrates with high salt content or soft bases, the full build-up is:

Layer Product Function
1st layer — preparatory base plaster Biocalce Rinzaffo (for high salt content, on tuff) adhesion-promoting base layer, ≈ 15 kg/m²/cm
2nd layer — thermal insulation plaster Benesserebio (this product) thermal insulation moisture barrier plaster, min. 2 cm, ≈ 6.5 kg/m²/cm
3rd layer — fine plaster Intonachino Fino, Granello; especially fine: Intonachino Tipo „00” smooth, paintable surface
4th layer — breathable paint Tinteggio, Silicato Puro Pittura, indoors Absolute Paint; on exterior facades Kerakover Silox Pittura lime-based, breathable painted surface
4th layer — finishing plaster Silicato Puro, Marmorino, Spatolato decorative breathable surface

Which layer / product is needed?

  • Base plaster (adhesion promoter): Biocalce Rinzaffo — μ ≤ 20
  • Salt-damaged base, wall section: Biocalce Zoccolatura — salt blocker, μ ≤ 3
  • Energy saving, mold-free warm wall: Benesserebio — this product is thermal insulation, λ 0.14 W/(mK)

Frequently Asked Questions

Why does mold and moisture form on cold walls?
Because warm, humid indoor air condenses on cold wall surfaces — and moisture feeds mold. Thermal insulation bio-plaster (e.g., Kerakoll Benesserebio) provides a surface 3 °C warmer, so the moisture does not condense, eliminating the risk of mold.

How can mold on the wall be permanently eliminated?
Mold is caused by cold, damp surfaces — symptomatic washing does not solve anything. A lasting solution is a warmer, breathable, moisture-proof plaster: Benesserebio raises the surface temperature by 3 °C and removes moisture, preventing mold from returning.

What is the thermal cellular (open-pored) technology?
Benesserebio contains open-pored thermal cells inside that maintain a 3 °C temperature difference between the wall and plaster surface. This makes the surface warmer, enhances evaporation, and the thin layer acts as a micro-thermal insulator.

How much energy does it save?
The warm bio plaster saves about 30% energy compared to traditional masonry. The open-pored thermal cells keep warmth in winter, coolness in summer, and reduce thermal bridges.

Which moisture-proofing plaster is the most effective?
The one that removes the most water in vapor form and does not seal the wall. Benesserebio’s evaporation capacity is 250% — 2.5 times more effective than traditional remediation plaster, and it also provides a warmer surface.

Benesserebio or Biocalce Zoccolatura — which one do I need?
For energy purposes, use Benesserebio; for pure salt damage, use Zoccolatura. Benesserebio is thermal cellular: warmer, energy-saving, mold-free — ideal where thermal bridges and moisture are issues. The Biocalce Zoccolatura is a salt-blocking base plaster for salt-damaged wall sections.

Is a base plaster needed under Benesserebio?
Yes, with high salt content (salt crust, efflorescence) — first apply the Biocalce Rinzaffo preparatory layer. Rinzaffo is also recommended on soft tuff. Always moisten the substrate before application.

How many m² does an 18 kg bag cover?
Material requirement ≈ 6.5 kg/m² per centimeter. For moisture-proofing, a 2 cm layer requires about 1.4 m² coverage per 18 kg bag.

When should I NOT use it?
Not in basement rooms exposed to water leakage. Do not apply on contaminated, dusty, loose substrates, old paint, or leveling layers. On cellular cement panels, it can only be used as thermal insulation plaster.

Can I apply it myself?
Can be applied by hand or machine. However, the durable restoration of damp, moldy walls requires expertise — diagnostics, layer construction, and curing. We also carry out the complete moisture-proofing system.

High Tech
  • Mortar type: restorative and thermal insulating mortar, R – T — EN 998-1
  • Binder: NHL 3.5 pure lime + mineral geo-binder + natural extra fine amorphous pozzolan
  • Grain size: 0 – 1.4 mm — EN 1015-1
  • Apparent bulk density: ≈ 0.75 kg/dm³ — UEAtc
  • Mixing water: ≈ 6 l / 18 kg bag
  • Fresh mortar bulk density: ≈ 0.85 kg/dm³ — EN 1015-6
  • Hardened mortar bulk density: ≥ 0.70 kg/dm³ — EN 1015-10
  • Water retention: ≥ 95% — DIN 18555-7
  • Air content: ≥ 25% — EN 413-2
  • Water vapor diffusion resistance factor (μ): 5 — EN 1015-19
  • Capillary water absorption W24: ≥ 0.3 kg/m² — EN 1015-18
  • Water penetration depth 24 h: ≤ 5 mm — EN 1015-18
  • Porosity: ≥ 40% — WTA 2-2-91/D
  • Fire resistance: Class A1 — EN 13501-1
  • Compressive strength (28 days): CS II category — EN 998-1
  • Adhesion (hollow brick): ≥ 0.1 N/mm² — FP: B — EN 1015-12
  • Sulfate resistance: fulfilled — ASTM C 1012-95a
  • Thermal conductivity (λ10, dry): 0.14 W/(m·K) — EN 1745
  • Mold resistant / vapor permeable: EN ISO 13788
  • Application temperature: +5 °C – +35 °C
  • Minimum applicable layer thickness: ≈ 1 cm
  • Layer thickness in case of capillary wetting: minimum 2 cm
  • Maximum layer thickness per layer: ≈ 4 cm
  • Material requirement: ≈ 6.5 kg/m²/cm
  • VOC emission: EC1 plus GEV-Emicode
  • Environmental certification: EPD-IES-0016566
  • GreenBuilding Rating: 5
  • Packaging: 18 kg bag
  • Storage: ≈ 12 months, in original bag, dry
Areas of application

Substrate preparation: Clean, consistent, debris-, dust-, and mold-free surface. On damp walls or with capillary moisture, remove the old plaster above the highest moisture level ≈ 1 meter. Remove weak bedding mortar and stones crumbled by salt. Clean the surface 12 hours before application (wet sandblasting + high-pressure washing). In case of high salt content, first apply Biocalce Rinzaffo as a preparatory layer. Moisten the substrate before application.

Mixing (18 kg bag): ≈ 6 l of clean water, in a concrete mixer. Pour in the water first, then all the powder at once. It may appear dry for 1-2 minutes — do not add water then. Mix for 3-4 minutes until homogeneous and lump-free. Do not add cement.

Application: By hand trowel or machine, max. 4 cm per layer. For capillary moisture, first apply ≈ 1 cm layer until it covers the wall; cure for 1-2 days, then reach a minimum total thickness of 2 cm with the second layer. Carry out moisture protection up to ≈ 1 meter above the highest moisture level. During hardening, smooth and level with a straightedge. For mixed masonry, embed an alkali-resistant plaster reinforcement mesh into the plaster.

Finishing: The surface can be smoothed with Biocalce Intonachino fine plaster (Fino, Granello, or Tipo “00”), then sealed with breathable lime/silicate paint (Tinteggio, Silicato Puro Pittura, Absolute Paint indoors; Kerakover Silox Pittura outdoors) or noble plaster (Silicato Puro, Marmorino, Spatolato).

Curing: Pay attention to curing depending on temperature and humidity.

Temperature: +5 °C – +35 °C. Protect the surface from strong sun and wind.

Cleaning: Clean tools with water while fresh. Hardened product can only be removed mechanically.

Stock and prices

Our online store is open 24/7 and ships Monday through Friday, except for some holidays. Orders received for products without delivery restrictions on the product page will be delivered within 1-3 days if received before 12:00 p.m. In the case of orders placed for products in the suppliers' warehouses, the expected availability time is indicated on the product page, and we deliver according to the indicated time.

In order to provide the best service, we try to keep a stock of the most popular products in our warehouse in Budapest. Such products are labeled "In Stock". These can be collected or delivered within 1-3 days.

All other products must be shipped from the supplier's warehouses. This can take 1-4 weeks (it depends on the manufacturer; please confirm the delivery time with our customer service before ordering). Such products are either marked "In Stock" or require a pre-order together with a request for a quote.

All prices include VAT.

Shipping information

Products available in our warehouse are delivered within 1-3 days.

Products not available in our warehouse are first shipped from the manufacturer’s warehouse to our warehouse, and then from there to you. Shipping from the manufacturer’s warehouse may take 1-2 weeks.

Available delivery options

  • GPS delivery is available throughout Hungary for orders up to 120 kg, with costs ranging from 4,200 to 25,200 HUF. The costs are determined based on the weight of the ordered products and are automatically added to your cart at checkout. Dispatch from our warehouse takes place on the next working day after the order to ensure fast and safe delivery of your order.
  • Upon request, we can also provide a custom delivery quote (useful for shipments over 120 kg).
  • You may also choose to pick up the goods free of charge from our warehouse.

Delivery terms for orders to other parts of Hungary are prepared upon request. Please contact us for a quote at hello@masterworks.hu or call +3670 400 2040.

REQUEST A QUOTE

Would you like to request a quotation or speak with our Kerakoll product expert?

Get in touch with us:

+36 70 400 2040

hello@masterworks.hu

Kerakoll Benesserebio thermal cell moisture-proof insulating bio plaster

The first thermal wall-drying bio-plaster containing thermal cells, which protects your home from every type of moisture and helps save energy.

A natural product for ecological construction.

What is open-cell thermal technology?

Greater thermal evaporation performance - Thanks to the 3°C thermal gradient between the masonry and the plaster surface, as well as the high porosity of the innovative thermal cells, Benesserebio has developed unprecedented thermal evaporation performance to ensure heat-removing dehumidification for all types of masonry and humidity levels.

Warmer surface - Thanks to the innovative thermal cell technology, the plaster surface warms up by 3°C, restoring comfort and well-being for the home and its occupants.

Greater energy savings - The thermostatic, porous surface of Benesserebio retains heat in winter and preserves coolness in summer. Thanks to the innovative thermal cells, the thin layer of plaster acts as a thermal micropanel system for the masonry and significantly improves the home's energy efficiency.

Protection against mould and condensation - The 3°C increase in the plaster's surface temperature permanently prevents the risk of mould growth and indoor condensation. Benesserebio is the certified and safe solution for restoring comfort and well-being in your home.

Exterior façades

RESTORATION OF WALLS AFFECTED BY RISING DAMP

• Quickly dries moisture from the wall through heat

• Solves salt-related problems

• Protects the wall from the effects of weather

Interior walls

SOLUTION AGAINST CONDENSATION AND MOULD

• prevents mould growth and condensation

• makes indoor environments warmer and healthier

• increases energy efficiency

Semi-basement rooms with retaining walls

SOLVES THE PROBLEM OF CONDENSATION AND MOLD CAUSED BY SEEPAGE INTO BASEMENT RETAINING WALLS

• when combined with osmotic waterproofing, it solves the problem of water seeping in from the ground

• eliminates mold and condensation

• makes the wall warmer and healthier

Benefits on the construction site

✓ One-component product, ensuring the best workability at every application stage

✓ Easier and smoother to spread, for faster work with less effort

✓ Can be applied manually or mechanically using standard equipment found on construction sites

✓ Higher coverage, resulting in lower transport costs and more square metres completed

✓ Practical, moisture-protected 18 kg bag—for less effort

✓ Natural product for ecological construction

PRODUCT BENEFITS

- Walls 3°C warmer: no condensation, no mold
- 30% energy savings: λ 0.14 W/(mK) thermal insulation
- 250% greater vapor permeability: expels water in the form of vapor
- 55–100% greater coverage: lightweight, ≈ 0.75 kg/dm³ mixture
- Fireproof: A1 reaction-to-fire class
- Repels bacteria, fungi, and mold: CSTB method
- Pure NHL 3.5 lime + geo-binder: natural, salt-resistant
- GreenBuilding Rating 5 + EPD: verified environmental impact
- Italian engineering design: Kerakoll Sassuolo, since 1968

Warmer surface

Thanks to innovative thermocell technology, the plaster surface warms up by 3 °C, providing a better sense of warmth in the interior rooms of the house and making them healthier.

Thermal-cell technology

The technological core of the new bio-plaster is its open-pore thermal-cell technology, which provides outstanding thermal performance and enhances vapor permeability.

Cold, damp masonry

Any masonry—whether new or old—may contain significant moisture and be exposed to low temperatures, causing it to lose its original protective function and resulting in a dangerous decline in the healthy well-being previously provided by the home.

Prevents mold and condensation from forming

If you increase the surface temperature of the plaster by 3°C, you can permanently prevent the risk of mould growth and indoor condensation. benesserebio® is a certified, safe solution for making your home comfortable and healthy again.

Greater energy savings

The thermoregulatory, porous surface of benesserebio retains heat in winter and preserves coolness in summer. Thanks to its innovative thermal cells, the thin bioplaster layer acts as a miniature panel insulation system on the masonry and significantly improves the home’s energy efficiency.

Higher thermodynamic evaporation capacity

Thanks to the thermal gradient provided by its innovative thermal cells and its high degree of porosity, benesserebio® has developed unparalleled thermal evaporation capacity to ensure thermal dehumidification for every type of wall and every type of moisture.

benesserebio: the heat that dries out walls and thereby saves energy

A solution for every type of wall and every type of moisture

benesserebio is the first warm, thermal dehumidifying bio-plaster that provides a permanent solution for the restoration of moisture-damaged masonry and the prevention of condensation.

benesserebio bio-plaster provides thermal dehumidifying benefits that specifically combat rising damp and condensation in different areas of the wall, from sections in contact with the ground to those in contact with structural elements and air.

benesserebio delivers the beneficial effects of heat therapy without the need for external rigid insulation systems, repairs thermal bridges, thereby preventing mould and fungi from forming on the wall, and provides significant energy savings over time.

The secret of thermal dehumidification: thermal cells

Any masonry, whether new or old, can be affected by high levels of moisture and low temperatures, causing the wall to lose its original protective function and dangerously reducing the healthy well-being previously provided by the home. The technological core of the new bio-plaster is open-pore thermal-cell technology, which provides excellent thermal properties and increases vapour-release capacity.

benesserebio bio-plaster consists primarily of highly breathable natural pure lime, natural active ingredients and eco-pores provided by recycled aggregates, according to an exclusive formula developed in Kerakoll GreenLab research and development laboratories.

benesserebio is a revolutionary, high-performance thermal dehumidifying bio-plaster that can successfully treat severe rising damp and condensation, because the innovative thermal-cell healthy technology is activated on contact with air and retains heat, thereby increasing the wall surface temperature by 3°C.

How thermal dehumidification works

benesserebio is the first bio-plaster based on thermal dehumidification, a revolutionary principle that permanently resolves both the problems of walls affected by capillary rising damp and those of mould and condensation in homes, thereby restoring ideal well-being in interior spaces.

After the packaging is opened, the product is mixed with water and applied, benesserebio begins drying by activating its cells and reaches its ideal temperature within 28 days. This starts the open-pore thermal dehumidification and deep restoration process in all types of old, damp and salt-laden masonry affected by capillary rising damp.

The thermal vapour-release capacity developed by green thermal-cell technology continuously extracts 12.5 litres of water per day from the wall and releases it into the environment as water vapour.

Thermal-cell well-being technology evenly and controllably increases the wall surface temperature by 3°C, preventing mould, fungi and bacteria from taking hold and spreading across the masonry. The temperature increase of the plaster prevents surface condensation: benesserebio acts like a true miniature rigid insulation system and can replace external insulation boards in preventing condensation on walls affected by severe damp and thermal bridges, thereby permanently resolving all surface-condensation problems.

Benesserebio: protection from cold and heat

benesserebio’s thermal dehumidifying technology not only provides healthy living spaces but also insulates and protects buildings. Thanks to its exceptional thermal properties, it leads to annual savings of 14,000 kWh**.

The homogeneous multicellular structure protects walls from the cold in winter and from heat in summer.

benesserebio’s insulating properties provide a very large thermal phase shift, allowing it to moderate temperature fluctuations inside the building and reduce the effects of external weather conditions. This ensures optimum comfort in the home and delivers real energy savings through both winter heating and summer cooling.

Benesserebio: extreme coverage on site

benesserebio’s revolutionary formula provides 55%–100% higher coverage than standard products available on the market.

benesserebio is easy to use by hand or machine in its practical, moisture-protected 18 kg packaging, with standard tools used on construction sites, and provides unprecedented workability. Try it and feel the difference!

Kerakoll - The GreenBuilding Company

About Kerakoll

In the increasingly important world of sustainable building materials and eco-friendly practices, Kerakoll is a pioneer in the industry. 

Founded in 1968, the Italian company has become a global leader in the production of adhesives, sealants, and other building materials, while remaining committed to environmental protection.

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