Thermal Insulation Putty – Lightweight Concrete Underfloor Heating Backfill for Interior and Exterior Wall Insulation

1. Product Description

Thermal insulation putty and lightweight concrete are new types of energy-saving building materials that take lightweight aggregates—such as hollow microspheres, fly ash hollow spheres, and ceramic microspheres—as their core component to reduce the overall structural weight. These materials are formulated by combining cement, polymer polymers, crack-resistant fibers, and functional additives.

I. Core Functions and Performance Metrics

1. Thermal insulation

Low thermal conductivity: High-quality thermal insulation putty can have a thermal conductivity as low as 0.048–0.075 W/(m·K), significantly lower than that of traditional cement mortar (approximately 0.93 W/(m·K)). This effectively reduces heat transfer between indoors and outdoors, thereby lowering air-conditioning energy consumption.

System advantages: Compared to insulation board systems, thermal insulation putty is applied directly onto the wall surface without any joint seams, thereby eliminating thermal bridging and achieving superior thermal conductivity. For example, one particular product incorporates fly ash hollow microspheres combined with far-infrared powder, resulting in a system thermal conductivity of just 0.07 W/(m·K)—a performance level that closely matches that of naturally porous materials.

2. Fire Safety

Class A fire protection standard: Primarily composed of inorganic materials (such as cement and glass microbeads), this material achieves a Class A1 combustion performance, meeting the fire safety requirements for high-rise buildings and public spaces while avoiding the flammability risks associated with organic insulation materials (such as EPS and XPS).

3. Durability and Stability

Crack-resistant and anti-shedding: By incorporating crack-resistant fibers (such as polypropylene short fibers) and elastic emulsions, the material’s flexibility is enhanced, allowing it to adapt to substrate deformation and reducing the risk of cracking. For example, a certain product can bend around a cylindrical specimen with a diameter of 50 mm without developing any cracks, and it can accommodate substrate deformations of up to ±5 mm/m.

Lifespan-synchronized construction: High-quality products are tightly integrated with the walls, ensuring a service life of over 25 years—essentially matching the lifespan of the building itself.

4. Environmentally friendly and healthy

Non-toxic and harmless: Made from eco-friendly materials such as plant-based胶 powder and mineral aggregates, it contains no formaldehyde, heavy metals, or other harmful substances and meets green building standards.

Breathable and moisture-regulating: The porous structure helps adjust indoor humidity, preventing condensation on walls and inhibiting mold growth.

1. Scope of Application

External wall insulation: Used as the finish coat or leveling layer in external wall external insulation systems, replacing traditional insulation mortars and reducing construction procedures.

Internal wall insulation: Used for partition walls, basements, and other areas to enhance indoor comfort.

Special scenarios: such as dehumidification of kitchen and bathroom walls, ceiling insulation, or energy-saving renovations of existing buildings.

Underfloor heating backfill: The indoor floor is leveled to Class A fire rating and features thermal insulation, heat retention, and soundproofing properties.

2. Construction Specifications

Base surface preparation: Remove oil stains and loose dust, and maintain by watering until no visible water remains. Concrete walls must undergo interface treatment.

Mixing and Application: Add water according to the water-to-cement ratio and mix for 3–5 minutes. The effective working time is 1–2 hours. The application thickness should be 3–10 mm. When applying in multiple layers, ensure that the interval between applications is properly controlled (e.g., 12 hours after the previous layer has reached final set).

Thickness Limit: The thickness of a single application should be ≤8mm. If the thickness exceeds 10mm, switch to inorganic thermal insulation mortar to avoid the risk of cracking.

2. Scope of Application

1. Thermal insulation for interior and exterior walls of new buildings: Suitable for regions with hot summers and cold winters, hot summers and mild winters, and cold climates. It serves directly as both the leveling layer and the insulation layer in both interior wall insulation systems and exterior wall insulation systems.
2. Energy-efficient renovation of existing buildings: This method is suitable for directly applying a coating onto the surface of old walls without altering the wall structure, thereby enhancing the building’s thermal insulation performance.
3. Substrate for thermal insulation coatings: As a leveling base material for architectural reflective thermal insulation coatings, the two materials together form a composite system that compensates for the coatings’ insufficient thermal performance and enhances the overall energy-saving effect.
4. Stairwells and corridors: Wall surfaces used in the building’s interior public areas, serving to provide auxiliary thermal insulation and reduce noise.
5. Basement and Garage: Leveraging their condensation-resistant and weatherproof properties to improve the humidity and thermal comfort of underground spaces.
6. Irregular and Special Wall Surfaces: Suitable for irregular structures such as curved walls and cylinders—areas where it’s difficult to install traditional panel insulation—offering greater construction adaptability.

3. Product Features

1. Thermal insulation performance: By incorporating lightweight materials such as hollow glass microspheres, the material exhibits a low thermal conductivity, effectively preventing thermal bridges and reducing building energy consumption.
2. Class A Fire Safety: This material is inorganic and non-combustible; it does not burn when exposed to fire, produces no toxic fumes, and is highly resistant to high temperatures, ensuring superior safety.
3. Adhesion and Crack Resistance: It adheres firmly to the substrate, making it resistant to hollowing and detachment. At the same time, it possesses a certain degree of flexibility, enabling it to withstand shrinkage stresses and effectively prevent cracking on wall surfaces.
4. Excellent construction performance: Lightweight texture, easy to apply and smooth out, high construction efficiency, and light weight per unit, which helps reduce the load on walls.
5. Comprehensive physical performance: Weather-resistant, water-resistant, and aging-resistant, with a service life matching that of the building; also provides a certain level of sound insulation and noise reduction.
6. Eco-friendly: Non-toxic, odorless, with low VOC emissions, making it an environmentally friendly material.

4. Performance Metrics

5. Construction Scenarios

6. Instructions for Use

Construction environment temperature: -5°C to 35°C. The water-to-cement ratio is an important performance indicator for this product. Please add water according to the manufacturer’s specified water-to-cement ratio, and use mechanical equipment to thoroughly and uniformly mix the materials before construction! If the water-to-cement ratio is improperly adjusted, it may affect the product’s performance. This product is a finished item—do not add any other substances arbitrarily, as this could compromise its functionality and quality system! If this product has expired, it should be properly reconditioned before reuse. Any leftover material that is not fully used after mixing must never be mixed with fresh material for further use! When carrying out outdoor construction in rainy weather, please set up a rain shelter. The mixed material must be used within 30 minutes; once the initial setting time has passed, the slurry will begin to set and lose its effectiveness! Once the package is opened, the contents should be used up in one go to prevent moisture absorption and clumping.

7. Success Stories

8. Reasons to Choose Us

• Our company has a professional technical R&D team that provides free assistance in resolving all technical challenges you may encounter during construction.
• The raw materials for our company’s products undergo rigorous screening, and we carefully select imported admixtures with scientifically optimized formulations. The quality-compliance error after three stages of processing does not exceed one-thousandth. Their functional characteristics meet the diverse application needs of our customers.
• High cost performance: Choose our company’s products. You’ll save 50% on labor, 50% on materials, and 50% on time—boosting construction efficiency and delivering significant economic benefits. We’ll ensure the quality of your project, giving you peace of mind and eliminating any future worries.
• Provide third-party type test reports, certificates of conformity, warranty certificates, special invoices, MSDS, and TCIR.
• Qualification Certifications: CCC, CMA, CNAS, ISO9001, CE/FCC; Product Implementation Standard: JC/T985-2017
• We have successful track records in the supply chain for large-scale wind power projects both domestically and internationally. Quality commitment guaranteed!

9. Packaging and Logistics: Delivery Date Guarantee

Factory Strength