Insulation materials for exterior walls are categorized according to fire rating levels.
Insulation materials with an A-grade flame retardant performance: rock wool, glass wool, foamed glass, foamed ceramic, expanded cement, closed-cell perlite, etc.
2. Insulation materials with B1 flammability rating: processed extruded polystyrene (XPS), processed polyurethane (PU), phenolic, and powder-poly苯 particles, etc.
3. Insulation materials with B2 flame retardancy: expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PU), polyethylene (PE), etc.
The exterior thermal insulation system of the building shall not use insulation materials with a combustion performance grade lower than B2 when the fire resistance limit of the roof panel is not 1.00h. When the fire resistance limit of the roof panel is 1.00h, the combustion performance grade should not be lower than B1. For exterior thermal insulation systems using B1 or B2 grade insulation materials, an intumescent layer made of non-combustible materials should be applied, with a thickness not less than 10mm.
When both the roof and external wall thermal insulation systems of a building use B1, B2 grade insulation materials, a fire separation strip should be set with a width of not less than 500mm to separate the roof from the external walls.
The standards "Exterior Insulation and Finish System for External Wall with Polymer Filler Bead Polystyrene Particles" JG 158-2004 and "Exterior Insulation and Finish System for External Wall with Extruded Polystyrene Board Thin Coating" JG 149-2003 are in place, but there is also the standard JGJ 144-2004 "Technical Code for External Insulation and Finish System Engineering" which also has requirements for the insulation material's specifications. What criteria should be used for the same material?
The Standard JGJ 144-2004 "Technical Specification for External Insulation of Building Walls" is a basic requirement for the design of external wall insulation engineering, while the standard for见证取样 (witness sampling) is a separate matter.
Regulations for sampling of thermal insulation materials used in energy-saving wall engineering projects:
Polystyrene Particle Adhesive, JG 158
Inspection Items: Dry bulk density, compressive strength, thermal conductivity, and combustion properties.
Polymer Binder Mortar/Polymer Rendering Mortar (Crack-Resistant Mortar) JG 149 DB11/T584 DB11/T696 GB/T29906 Project Tensile Bond Strength (vs. Cement Mortar) Room Temperature Standard Condition Tensile Bond Strength (vs. Cement Mortar After Water Immersion) Minimum Sample Weight: 5kg per set
Building Material Testing - Main Categories of Insulation Materials:
Insulation Panels: Molded boards, extruded boards, polyurethane boards, phenolic boards, etc.
Duct Products: Aluminum foil polyurethane composite duct, aluminum foil phenolic composite duct, aluminum foil glass wool composite duct, magnesium silicate duct, etc.
Mineral Wool Products: Glass Wool, Rock Wool Slag Wool, Aluminum Silicate Wool, Inorganic Spraying Wool, etc.
Thermal Insulating Mortar: Poly苯 particle slurry, inorganic thermal insulation mortar, silicate insulating paint, adhesive, finishing mortar, etc.
What are the necessary re-inspection procedures for exterior thermal insulation materials (EPS boards) upon arrival? What information should be filled in on the委托单 (mandate form)?
Compressive strength, bulk density, thermal conductivity, fire rating should be re-tested for each type of thermal insulation material upon arrival.
2. The boards, plastering mortar, bonding mortar, mesh, and anchor bolts you mentioned should be sent for inspection in several sets (as part of the material sampling) based on your construction area.
3. The re-examination is a task conducted prior to the commencement of material construction, while sending for inspection or on-site sampling are activities performed during the construction phase!
4. Regarding the retest projects, the EPS thin plastering system technical specifications are clearly described.
Which projects should be re-inspected upon the arrival of fire-resistant rock wool?
Fire-resistant rock wool for architectural curtain walls requires a re-inspection upon arrival.
In accordance with the "Code for Acceptance of Quality of Decorative and Architectural Construction," at least one group of samples of the same type of incoming materials should be re-inspected. When there are other agreements in the contract, the contract terms should be followed, and the testing content includes thermal conductivity, density, and compressive strength.
Inorganic thermal insulation mortar, plywood, flame-retardant boards, extruded boards, expanded boards, expanded perlite boards, homogeneous boards, polyurethane boards, cement foamed boards, fire-retardant coatings, mineral wool acoustic boards, rock wool boards, glass wool boards, phenolic boards, genuine gold boards, black gold boards, wall boards, foam concrete, and other thermal insulation materials.
