Thermal Insulation Rock Wool Strips

Product Details

Thermal insulation rock wool strips are strip-shaped thermal insulation products primarily made from natural basalt and slag. They are produced via high-temperature melting, centrifugal fiberization, and specialized directional fiber laying and curing technologies. The fibers are aligned perpendicular to the face of the strip. This structure not only inherits the excellent fire resistance and thermal insulation properties of rock wool but also provides tensile and compressive strength far exceeding that of standard rock wool boards. They are an ideal choice for building exterior wall thin-layer rendering systems and curtain wall insulation.

Core Value Highlights

Excellent Fire Resistance & Safety: Classified as a Class A (non-combustible) material, they effectively inhibit flame spread, providing a robust fire barrier for buildings and significantly enhancing the safety rating of both public and residential structures.

High Tensile Strength & Structural Stability: The unique vertical fiber orientation grants superior tensile strength, allowing secure integration into external wall systems and preventing deformation or detachment caused by self-weight or negative wind pressure.

Durable Thermal Insulation & Energy Saving: The fiber structure, filled with closed pores, effectively blocks heat flow, helping maintain stable indoor temperatures year-round. This aids in reducing heating and cooling energy consumption and improves energy utilization efficiency.

Water Repellent & Moisture Resistant: Possesses good hydrophobic properties, effectively resisting water ingress, preventing moisture-related degradation of insulation performance and mold growth, thereby ensuring long-term system durability.

Eco-Friendly & Easy Installation: Made from natural inorganic minerals, they are chemically stable and odorless. Standardized strip dimensions and weight facilitate on-site handling, cutting, and installation, boosting construction efficiency.

Thermal insulation rock wool strips are a reliable thermal insulation solution for modern construction aiming to achieve energy efficiency, fire safety, and security goals. They are widely used in external wall insulation systems for various new build and renovation projects.

Core Application Areas

Leveraging their Class A fire rating, high tensile strength, and excellent thermal insulation properties, thermal insulation rock wool strips have become a key material for building energy efficiency and safety, primarily used in the following systems:

01. External Thermal Insulation Composite Systems (ETICS)

Application Scenario: Thin-layer rendering insulation systems for external walls of residential and public buildings.

Value Provided: The vertical fiber structure provides exceptional tensile strength, enabling secure embedding within the system. This effectively resists self-weight and negative wind pressure, prevents detachment, and ensures the insulation layer's service life matches the building structure.

02. Curtain Wall Insulation Systems

Application Scenario: Thermal insulation layer for building curtain walls such as stone, metal panel, and glass curtain walls.

Value Provided: Provides a continuous fire barrier for the curtain wall system. Their high strength accommodates the curtain wall structure, ensuring stability and safety within the cavity.

03. Building Fire Protection Details

Application Scenario: Fire barriers, perimeter insulation around door/window openings, fire stopping between floors.

Value Provided: As a Class A non-combustible material, they effectively block the vertical and horizontal spread of flames and hot gases within a building, serving as a core material for constructing fire compartmentation systems.

04. Special Applications & Industrial Use

Application Scenario: Expansion joint filling, insulation for industrial equipment and pipelines.

Value Provided: Adapts to complex filling requirements. While ensuring fire safety, they provide reliable temperature control and energy savings for industrial facilities.

Applications by Building Type

High-Rise Buildings: Addresses wind pressure safety concerns in insulation systems and meets mandatory fire protection requirements.

High-Occupancy Buildings: Schools, hospitals, shopping malls, etc., providing the highest level of fire protection.

Industrial Plants & Warehouses: Balances insulation with fire safety, reducing operational energy costs and risks.

Building Energy Efficiency Retrofits: Significantly improves building energy efficiency and safety ratings without altering the external facade.

Technical Parameters

Professional Guidelines for Installation and Storage of Thermal Insulation Rock Wool Strips

01 Installation Guidelines

Pre-Installation Preparation

Substrate Preparation: Ensure the wall substrate is solid, level, clean, dry, and free of oil, loose debris, and dust.

Ambient Conditions: Installation should ideally be carried out at ambient temperatures between 5°C and 35°C. Avoid working in rainy, snowy, or excessively windy conditions.

Material Inspection: Verify the rock wool strip specifications and check that the products are dry and undamaged.

Key Installation Points

Adhesive Application: The full-adhesion method (or strip/adribbon method) is recommended. Use specialized polymer bonding mortar, ensuring the adhesive coverage area meets or exceeds the specified requirement (typically ≥ 60%).

Staggered Layout: Apply the strips with staggered vertical and horizontal joints. The stagger length should ideally be no less than 1/3 of the strip length. Interlock the strips at internal and external corners.

Mechanical Fastening: After the initial setting of the bonding mortar, mechanical anchors should be installed promptly. The number, type/specification, and embedment depth of the anchors must comply with the design requirements, typically located at joints and the center of the strips.

Joint Treatment: Butt joints tightly together; joint gaps should not exceed 2mm. Gaps wider than this should be filled tightly with compatible rock wool slivers or insulating foam.

Safety & Protection

Personal Protective Equipment (PPE): Workers should wear gloves, masks, safety goggles, and other appropriate protective gear to avoid skin and respiratory tract irritation from fiber fragments.

Site Fire Safety: Open flames are strictly prohibited on the construction site. Appropriate fire-fighting equipment should be readily available.

02 Storage & Handling Recommendations

Storage Environment

Indoor Storage: Store indoors on a dry, ventilated, and level surface. Avoid direct contact with the ground; using pallets for elevation is recommended.

Water & Moisture Protection: Protect strictly from rain or dampness, as the thermal insulation performance of rock wool significantly decreases with moisture absorption.

Avoid Compression: Stacks should not be excessively high to prevent deformation of the bottom layers under prolonged heavy pressure, which can affect performance.

Packaging & Handling

Maintain Packaging: Endeavor to keep the original packaging intact during storage and handling until immediately before installation.

Careful Handling: Handle with care during transport and on-site movement to prevent impact damage and corner breakage.

Adhering to the above recommendations will help maximize the performance of the thermal insulation rock wool strips, ensure installation quality and safety, and extend the service life of the system.

FAQ

Q1: What is the fire rating of rock wool strips, and what fire protection applications are they suitable for?

A1: Rock wool strips are Class A non-combustible materials, complying with the highest national fire safety standards. They are particularly suitable for applications with stringent fire protection requirements, such as building fire barriers, spandrel cavity barriers in curtain walls, and sealing cable penetration openings. They effectively prevent the spread of flames and enhance the overall fire safety rating of the building.

Q2: What is the density range of rock wool strips, and how to choose the right density?

A2: The density of our rock wool strips typically ranges from 80 kg/m³ to 180 kg/m³. The selection primarily depends on the application:

Lower density (e.g., 80-100 kg/m³): Suitable for cavity fill and non-loadbearing partitions.

Medium-High density (e.g., 120-150 kg/m³): Ideal for curtain wall insulation, offering a balance of thermal insulation and strength.

High density (e.g., 160 kg/m³ and above): Used for special applications requiring higher compressive/shear strength or in industrial environments.

Q3: Are specific adhesives or fixings required for installing rock wool strips?

A3: Yes, to ensure system reliability, we strongly recommend using specialized polymer bonding mortar and anchors compatible with the rock wool system. These matched fixings have undergone compatibility testing and provide reliable adhesive strength and mechanical fixation, avoiding the risk of detachment associated with using ordinary construction adhesives.

Q4: Does the installation of rock wool strips generate significant dust? Any protection recommendations?

A4: Cutting or grinding may generate a limited amount of fibrous dust. We recommend the following protective measures during installation:

Ensure Ventilation: Maintain good air circulation in the work area.

Use Personal Protective Equipment (PPE): Operators should wear masks, protective goggles, and gloves to minimize contact with fiber particles.

Optimize Work Practices: Minimize on-site cutting by using standard sizes where possible, or use dedicated cutting tools.

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