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Why choose thermal insulation mortar? - NFLG Dry Mortar Plant Supplier

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Why choose thermal insulation mortar?

September 15, 2023 jinchen 0 Comments

In the realm of modern construction, the pursuit of energy efficiency and indoor comfort stands as a paramount goal. The building industry has been on a relentless quest to find innovative solutions that not only reduce energy consumption but also elevate the quality of living or working spaces. One such solution that has gained significant traction is Thermal Insulation Mortar. This remarkable material is revolutionizing the way structures are built, offering a potent combination of thermal performance, durability, and sustainability.

Types of Insulation Materials

a photo of Thermal insulation mortar

Thermal insulation mortar is a specialized construction material designed to improve the energy efficiency of buildings by reducing heat transfer. It typically consists of several common materials, each with its characteristics and advantages.

Expanded Polystyrene (EPS)

EPS is a lightweight, rigid foam plastic that is commonly used in thermal insulation mortars.

It is known for its excellent insulation properties, low moisture absorption, and resistance to mold and pests.

EPS boards are easy to cut and shape, making them versatile for various construction applications.

Extruded Polystyrene (XPS)

XPS is another type of foam plastic often used in thermal insulation mortars.

It has a higher compressive strength compared to EPS and is moisture-resistant, making it suitable for below-grade applications.

XPS boards are known for their durability and long service life.

Mineral Wool

Mineral wool, including rock wool and glass wool, is made from natural or recycled materials.

It offers good fire resistance and sound insulation in addition to thermal insulation.

Mineral wool is often used in both loose-fill and board forms for insulating walls, roofs, and floors.

Polyurethane (PU) Foam

PU foam is a versatile insulation material used in both rigid and spray forms.

It has excellent thermal properties and can provide a high level of insulation in a relatively thin layer.

PU foam adheres well to various surfaces, making it suitable for irregular or hard-to-reach spaces.


Aerogel is an advanced insulation material known for its extremely low thermal conductivity.

It is often used in high-performance applications where maximizing insulation with minimal thickness is crucial.

Aerogel is lightweight and highly effective but can be expensive.

Reflective Insulation

Reflective insulation materials, such as foil-faced boards or radiant barriers, work by reflecting radiant heat.

They are particularly effective in hot climates for reducing heat gain.

Reflective insulation is often used in combination with other insulation materials.

The choice of insulation material depends on factors like climate, building design, budget, and performance requirements. Combining these materials with mortar allows for easy application and integration into construction projects. Thermal insulation mortars are used to create energy-efficient building envelopes, reduce heating and cooling costs, and improve indoor comfort. Proper insulation selection and installation are essential for achieving these benefits while minimizing environmental impacts.

Application Techniques

a photo of Thermal insulation mortar

Thermal insulation mortar can be applied using various construction methods, each with its suitability and advantages depending on the specific project requirements.

Rendering and Plastering

Suitability: Rendering and plastering with thermal insulation mortar involve applying a layer of mortar directly onto the exterior or interior surfaces of a building. This method is suitable for both new construction and renovation projects. It provides a continuous and seamless insulation layer.

Advantages: Rendering and plastering create a uniform appearance and help improve the aesthetics of the building. It’s a versatile method suitable for various surfaces, including walls and ceilings.

Spray Application

Suitability: Spray application is a highly efficient method for covering large areas quickly. It’s commonly used for insulating roofs, walls, and floors in both residential and commercial buildings. It’s particularly useful for irregular or hard-to-reach surfaces.

Advantages: Spray application ensures good adhesion and coverage, reducing the risk of thermal bridging. It can be applied to various substrates, including concrete, wood, and metal. The method minimizes labor costs and installation time.

Pouring and Casting

Suitability: Pouring and casting involve mixing thermal insulation mortar with water and then pouring or casting it into molds or formwork. This method is often used for insulating floors and flat roof structures.

Advantages: It allows for precise insulation of specific areas, such as floor slabs. Pouring and casting can achieve a high level of insulation performance and can accommodate complex shapes and designs.

Panel Systems

Suitability: Panel systems consist of pre-fabricated insulation panels with thermal insulation mortar bonded to them. These panels can be used for walls, roofs, and floors.

Advantages: Panel systems offer excellent insulation performance and are easy to install. They provide a modular approach to insulation and can be customized to fit specific project requirements.


Suitability: Injection involves injecting thermal insulation mortar into cavities or voids within existing walls or structures. It’s commonly used for retrofitting insulation in older buildings.

Advantages: Injection is a non-intrusive method that can improve the energy efficiency of existing buildings without major structural changes. It’s ideal for improving insulation in walls with limited access.

The choice of construction method depends on factors like the building’s design, substrate type, accessibility, and project goals. Proper installation techniques are essential to ensure the insulation’s effectiveness and long-term performance.

Advantages and Benefits

a photo of Thermal insulation mortar

Thermal insulation mortar offers a range of advantages and benefits in the construction industry due to its ability to enhance energy efficiency, comfort, and overall building performance.

Improved Energy Efficiency

Thermal insulation mortar significantly reduces heat transfer through building envelopes, such as walls, roofs, and floors.

This results in reduced heating and cooling energy consumption, leading to lower utility bills and a smaller carbon footprint.

Enhanced Comfort

Buildings insulated with thermal insulation mortar maintain more consistent indoor temperatures.

This leads to improved occupant comfort, as there are fewer temperature fluctuations and drafts, creating a more pleasant living or working environment.

Condensation Control

Insulation helps prevent condensation from forming on interior surfaces, reducing the risk of mold growth and moisture-related damage.

This is particularly important in humid or cold climates.

Acoustic Insulation

Some thermal insulation mortars also offer acoustic insulation properties, reducing the transmission of sound between rooms and from external sources.

This contributes to a quieter and more peaceful indoor environment.


High-quality thermal insulation mortars are designed to be long-lasting and resistant to moisture, pests, and fire.

They help protect the building’s structural integrity.

Environmental Benefits

Using thermal insulation mortar can contribute to reduced greenhouse gas emissions by lowering energy consumption.

Additionally, some products are made from recycled or sustainable materials, further reducing their environmental impact.

Thermal insulation mortar is a versatile and effective solution for improving the energy performance, comfort, and durability of buildings. Its benefits extend to both homeowners and commercial property owners, making it a valuable choice in modern construction practices.

Installation Process

a photo of Thermal insulation mortar

The installation process of thermal insulation mortar involves several key steps to ensure proper application and effective thermal performance.

Surface Preparation: Before applying thermal insulation mortar, the substrate surface must be cleaned, and free from dust, dirt, and loose particles. Any existing coatings or contaminants should be removed to ensure good adhesion.

Priming: Depending on the type of substrate and mortar used, a suitable primer may be applied. Priming helps improve adhesion and prevents moisture penetration.

Mixing: The thermal insulation mortar is mixed according to the manufacturer’s instructions. Proper mixing ensures uniform consistency and helps activate any additives for optimal performance.

Application: The mortar is applied to the substrate using the chosen method, such as rendering plastering or spray application. The thickness of the mortar layer should conform to design specifications to achieve the desired thermal resistance (R-value).

Embedding Insulation Material: In some cases, insulation materials like expanded polystyrene (EPS) boards or mineral wool may be embedded into the wet mortar layer to enhance thermal performance.

Smoothing and Leveling: After application, the mortar is smoothed and leveled using appropriate tools to achieve a uniform surface finish.

Curing: The mortar requires sufficient curing time to achieve its intended strength and durability. Curing may involve keeping the surface damp or applying curing compounds.

Finishing: Depending on the project requirements, a final finish or coating may be applied to the thermal insulation mortar to protect it from environmental factors and enhance aesthetics.

Quality Control: Inspectors may perform quality checks to ensure that the installation meets design specifications and complies with building codes and standards.

Clean-Up: Proper disposal of waste materials and cleaning of tools and equipment are essential to maintain a safe and tidy work environment.

Testing: In some cases, thermal performance tests may be conducted to verify the insulation’s effectiveness in reducing heat transfer.

The installation process may vary depending on the specific product and project requirements. Proper installation contributes to improved energy efficiency, comfort, and long-term building performance.

Industry Applications

a photo of Thermal insulation mortar

Thermal insulation mortar finds applications across various industries and fields where efficient temperature control and insulation are essential.

Building and Construction: Used in residential, commercial, and industrial construction for insulating exterior walls, roofs, and floors to enhance energy efficiency.

Infrastructure: Applied in bridges, tunnels, and transportation infrastructure to reduce heat transfer and protect structures from temperature fluctuations.

Marine: Applied in shipbuilding and offshore platforms to prevent heat loss and protect against extreme temperature variations.

Agriculture: Used in greenhouses to regulate temperature and create a controlled environment for plant growth.

Cold Storage: Employed in refrigerated warehouses and cold storage facilities to maintain low temperatures.

Manufacturing: Applied in manufacturing plants and facilities to insulate equipment, ovens, and storage areas.

Historical Preservation: Utilized in the restoration of historical buildings to improve energy performance while preserving architectural integrity.

These diverse applications highlight the versatility and importance of thermal insulation mortar in various industries, contributing to energy conservation and environmental sustainability.

Maintenance and Repairs

a photo of Thermal insulation mortar

Maintenance and repair of thermal insulation mortar are crucial to ensure its long-term effectiveness and sustainability.


Regular Inspection: Periodically inspect the thermal insulation system for any signs of damage, cracks, or gaps.

Cleaning: Keep the surface clean from dirt, dust, and debris that can reduce insulation performance.

Moisture Management: Ensure that the insulation remains dry to prevent mold growth and maintain insulation properties.

Sealant Inspection: Check the condition of sealants and joints, repairing or replacing them if damaged.

Recoat if Necessary: If the thermal insulation mortar shows signs of wear or damage, consider applying a fresh coat to restore its insulating properties.


Surface Preparation: Clean the damaged area thoroughly and remove any loose or deteriorated mortar.

Patch or Fill: Use compatible thermal insulation mortar to patch or fill in cracks, gaps, or damaged sections.

Reinforce if Needed: For severe damage, consider adding additional layers or reinforcement materials.

Seal Joints: Ensure that joints and seams are sealed properly to prevent heat loss.

Finish: Match the repaired area’s finish to the surrounding surface for a seamless appearance.

Quality Control: Test the repaired insulation to ensure it meets the required thermal performance standards.

Regular maintenance and prompt repairs are essential to preserve the thermal insulation mortar’s efficiency and extend its service life, contributing to energy savings and reduced environmental impact.

a photo of Thermal insulation mortar

Thermal insulation mortar is a game-changer in the construction industry, providing energy efficiency, comfort, and sustainability. As the demand for greener and more efficient buildings continues to grow, this remarkable material is likely to play an increasingly vital role. By considering thermal insulation mortar in construction projects, we not only create better spaces but also contribute to a more sustainable future.

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