Long-term commitment to the R & D and manufacturing of extruded board insulation materials, a new service platform
Production workshop feeding volume per hour 2 tons, daily output 1000 cubic meters
The following is a detailed introduction to extruded boards for roofs, covering characteristics, application scenarios, installation points and precautions
1. The core characteristics of extruded sheets for roofs
1. Efficient thermal insulation
Advantages of closed pore structure: The closed pore rate is as high as 99%, forming an independent vacuum chamber, effectively preventing air convection and heat dissipation, low thermal conductivity, and 2-5 times that of traditional insulation materials (such as rock wool and perlite).
Climate adaptability: Blocking external heat from entering the room in summer, reducing indoor heat loss through the roof in winter, and reducing air conditioning/heating energy consumption. It is especially suitable for cold areas, hot summer and cold winter areas, and projects with high requirements for energy-saving buildings.
2. High strength compression and deformation resistance
Outstanding compressive performance: The compressive strength can reach 250-600KPa (depending on the model). It can withstand the roof concrete layer, waterproof layer, rain and snow loads and the stepping on by construction personnel. It is not easy to deform or collapse after long-term use.
Strong impact resistance: The honeycomb structure gives the board toughness, which can withstand external impacts such as hail and snow melting, and protect the safety of the roof structure.
3. Hydrophobic, moisture-proof and impermeability
Low water absorption rate: The polystyrene molecular structure itself does not absorb water, and the dense surface layer further blocks water penetration. The water absorption rate is ≤1.5%(volume ratio), which avoids the decline of insulation performance after water absorption and prevents insulation layer failure caused by roof leakage.
Long-term stability: No aging, no decomposition, resistance to acid and alkali corrosion, and still maintain stable performance in high humidity environments (such as bathrooms and roofs above kitchens).
4. Lightweight and easy construction
Low density: The density is usually 28-45kg/m³, which reduces the overall load on the roof and reduces the load-bearing requirements of the building structure. It is especially suitable for renovation projects or lightweight roof systems.
Easy to cut and install: It can be flexibly cut according to the shape of the roof, which is convenient to splice. It can be used with adhesives or mechanical fasteners (such as anchors) for rapid construction and shorten the construction period.
5. Fire resistance performance (differentiated by model)
Ordinary type (Class B3): Flammable and suitable for non-crowded places with low fire prevention requirements.
Flame retardant type (B1/B2 level): With flame retardant added, it is difficult to ignite when encountering fire or self-extinguishing when leaving fire. It complies with standards such as the "Code for Fire Protection Design of Interior Decoration of Buildings" and is widely used in residential and commercial building roofs.
2. Main application scenarios
1. Building roof insulation system
Flat roof: The insulation layer used for concrete flat roofs and metal roofs (such as color steel plates) can be used with a waterproof layer to form an "inverted roof" or "upright roof".
Inclined roof: Suitable for sloping roofs and attic roofs, reducing heat loss through sloping surfaces and providing sound insulation effects (such as footsteps and rainwater impact).
2. energy-saving renovation project
When the roofs of old buildings are renovated, they can be laid directly above the original waterproof layer (inverted construction), eliminating the need to demolish the original structure and reducing the renovation cost.
3. Special scene roof
Planted roof: Compression-resistant extruded panels can withstand the load of planting soil and vegetation, while blocking moisture from permeating upwards and protecting plant roots and roof structure.
People-on roofs: High compression resistant models (such as above 500KPa) are suitable for roofs that need to withstand human activities (such as roof gardens, equipment platforms).
3. Installation key points and construction process
1. pre-construction preparation
Base surface treatment: The roof base must be flat, dry and clean, remove debris and oil stains, and use mortar to level uneven areas (flatness error ≤5mm/2m).
Material inspection: Check the model, thickness and fire resistance rating of the extruded board, check whether the board is damaged or deformed, and ensure that it is dry and free from moisture.
2. Typical construction process (taking inverted roof as an example)
Lay insulation layer
Lay from the edge of the roof to the center, splice the plates with staggered joints (staggered joints ≥100mm), and fix them with adhesive (such as polymer mortar) or mechanical anchors to ensure flatness and no warpage.
At protruding parts of the roof (such as exhaust pipes and parapets), extruded sheets need to be cut into suitable shapes and wrapped, and caulked with sealant.
Lay waterproof layer
Lay a waterproof membrane or coated waterproof layer above the insulation layer to form an inverted structure of "insulation layer + waterproof layer" to protect the insulation layer from rainwater erosion.
protective layer construction
A concrete protective layer (thickness ≥40mm, equipped with steel mesh) shall be poured on the roof of the person; a pebble or cement mortar protective layer can be laid on the roof of the person.
3. Processing of key details
Joint treatment: Seal the joints between boards with polyurethane foam caulking agent or special tape to prevent cold and hot bridge effects.
Flooding node: At the junction of the roof and the wall, the extruded board should extend to the wall ≥300mm to form a flashing insulation layer to avoid dew condensation in corners.
Ventilation system: Ventilation holes need to be provided on large-area roofs to prevent moisture accumulation inside the insulation layer and causing bulging.
4. Matters needing attention
1. fire safety
Combustible extruded panels must be kept away from fire sources during construction. Flame retardant panels must meet fire acceptance requirements. It is strictly prohibited to use ordinary panels in high temperature environments (such as close to exhaust pipes and chimneys).
2. Moisture and drainage
The roof drainage slope should be ≥2% to prevent stagnant water from penetrating into the insulation layer; the waterproof layer of inverted roofs should ensure that there are no leakage points.
3. Environmental protection and durability
Select products that meet the standards of "Extruded Polystyrene Foam for Thermal Insulation (XPS)"(GB/T 10801.2), avoid using inferior boards produced from recycled materials, and ensure a service life of ≥25 years.
5. Selection suggestions
Residential/commercial building roofs: Select B1-level flame retardant type, compressive strength ≥300KPa, thickness 30-50mm (determined based on energy-saving calculations).
Planted roof/human roof: compressive strength ≥500KPa, thickness 50-70mm, with root puncture resistant waterproof layer.
Cold areas: Priority should be given to thick gauge plates (such as 60-100mm), or double staggered seam laying to enhance the insulation effect.
Through reasonable design and construction, special extruded panels for roofs can significantly improve building energy efficiency and extend roof service life. They are one of the mainstream options for modern building insulation.
1. The core characteristics of extruded sheets for roofs
1. Efficient thermal insulation
Advantages of closed pore structure: The closed pore rate is as high as 99%, forming an independent vacuum chamber, effectively preventing air convection and heat dissipation, low thermal conductivity, and 2-5 times that of traditional insulation materials (such as rock wool and perlite).
Climate adaptability: Blocking external heat from entering the room in summer, reducing indoor heat loss through the roof in winter, and reducing air conditioning/heating energy consumption. It is especially suitable for cold areas, hot summer and cold winter areas, and projects with high requirements for energy-saving buildings.
2. High strength compression and deformation resistance
Outstanding compressive performance: The compressive strength can reach 250-600KPa (depending on the model). It can withstand the roof concrete layer, waterproof layer, rain and snow loads and the stepping on by construction personnel. It is not easy to deform or collapse after long-term use.
Strong impact resistance: The honeycomb structure gives the board toughness, which can withstand external impacts such as hail and snow melting, and protect the safety of the roof structure.
3. Hydrophobic, moisture-proof and impermeability
Low water absorption rate: The polystyrene molecular structure itself does not absorb water, and the dense surface layer further blocks water penetration. The water absorption rate is ≤1.5%(volume ratio), which avoids the decline of insulation performance after water absorption and prevents insulation layer failure caused by roof leakage.
Long-term stability: No aging, no decomposition, resistance to acid and alkali corrosion, and still maintain stable performance in high humidity environments (such as bathrooms and roofs above kitchens).
4. Lightweight and easy construction
Low density: The density is usually 28-45kg/m³, which reduces the overall load on the roof and reduces the load-bearing requirements of the building structure. It is especially suitable for renovation projects or lightweight roof systems.
Easy to cut and install: It can be flexibly cut according to the shape of the roof, which is convenient to splice. It can be used with adhesives or mechanical fasteners (such as anchors) for rapid construction and shorten the construction period.
5. Fire resistance performance (differentiated by model)
Ordinary type (Class B3): Flammable and suitable for non-crowded places with low fire prevention requirements.
Flame retardant type (B1/B2 level): With flame retardant added, it is difficult to ignite when encountering fire or self-extinguishing when leaving fire. It complies with standards such as the "Code for Fire Protection Design of Interior Decoration of Buildings" and is widely used in residential and commercial building roofs.
2. Main application scenarios
1. Building roof insulation system
Flat roof: The insulation layer used for concrete flat roofs and metal roofs (such as color steel plates) can be used with a waterproof layer to form an "inverted roof" or "upright roof".
Inclined roof: Suitable for sloping roofs and attic roofs, reducing heat loss through sloping surfaces and providing sound insulation effects (such as footsteps and rainwater impact).
2. energy-saving renovation project
When the roofs of old buildings are renovated, they can be laid directly above the original waterproof layer (inverted construction), eliminating the need to demolish the original structure and reducing the renovation cost.
3. Special scene roof
Planted roof: Compression-resistant extruded panels can withstand the load of planting soil and vegetation, while blocking moisture from permeating upwards and protecting plant roots and roof structure.
People-on roofs: High compression resistant models (such as above 500KPa) are suitable for roofs that need to withstand human activities (such as roof gardens, equipment platforms).
3. Installation key points and construction process
1. pre-construction preparation
Base surface treatment: The roof base must be flat, dry and clean, remove debris and oil stains, and use mortar to level uneven areas (flatness error ≤5mm/2m).
Material inspection: Check the model, thickness and fire resistance rating of the extruded board, check whether the board is damaged or deformed, and ensure that it is dry and free from moisture.
2. Typical construction process (taking inverted roof as an example)
Lay insulation layer
Lay from the edge of the roof to the center, splice the plates with staggered joints (staggered joints ≥100mm), and fix them with adhesive (such as polymer mortar) or mechanical anchors to ensure flatness and no warpage.
At protruding parts of the roof (such as exhaust pipes and parapets), extruded sheets need to be cut into suitable shapes and wrapped, and caulked with sealant.
Lay waterproof layer
Lay a waterproof membrane or coated waterproof layer above the insulation layer to form an inverted structure of "insulation layer + waterproof layer" to protect the insulation layer from rainwater erosion.
protective layer construction
A concrete protective layer (thickness ≥40mm, equipped with steel mesh) shall be poured on the roof of the person; a pebble or cement mortar protective layer can be laid on the roof of the person.
3. Processing of key details
Joint treatment: Seal the joints between boards with polyurethane foam caulking agent or special tape to prevent cold and hot bridge effects.
Flooding node: At the junction of the roof and the wall, the extruded board should extend to the wall ≥300mm to form a flashing insulation layer to avoid dew condensation in corners.
Ventilation system: Ventilation holes need to be provided on large-area roofs to prevent moisture accumulation inside the insulation layer and causing bulging.
4. Matters needing attention
1. fire safety
Combustible extruded panels must be kept away from fire sources during construction. Flame retardant panels must meet fire acceptance requirements. It is strictly prohibited to use ordinary panels in high temperature environments (such as close to exhaust pipes and chimneys).
2. Moisture and drainage
The roof drainage slope should be ≥2% to prevent stagnant water from penetrating into the insulation layer; the waterproof layer of inverted roofs should ensure that there are no leakage points.
3. Environmental protection and durability
Select products that meet the standards of "Extruded Polystyrene Foam for Thermal Insulation (XPS)"(GB/T 10801.2), avoid using inferior boards produced from recycled materials, and ensure a service life of ≥25 years.
5. Selection suggestions
Residential/commercial building roofs: Select B1-level flame retardant type, compressive strength ≥300KPa, thickness 30-50mm (determined based on energy-saving calculations).
Planted roof/human roof: compressive strength ≥500KPa, thickness 50-70mm, with root puncture resistant waterproof layer.
Cold areas: Priority should be given to thick gauge plates (such as 60-100mm), or double staggered seam laying to enhance the insulation effect.
Through reasonable design and construction, special extruded panels for roofs can significantly improve building energy efficiency and extend roof service life. They are one of the mainstream options for modern building insulation.
