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Microfiber Micro WelEco 16 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 16
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.316
Microfiber Micro WelEco glass wool
Glass wool for thermal insulation and sound absorption — under roofs, inside metal-stud partitions and as wall lining to reduce echo. VOC emissions tested to CDPH v1.2.
- Thickness
- 50–75 mm
- Density
- 16–64 kg/m³
- Thermal conductivity (λ)
- 0.038 / 0.035 / 0.033 / 0.032 / 0.031 W/m·K 16 / 24 / 32 / 48 / 64 kg/m³ at 24 °C · ASTM C518
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Microfiber Micro WelEco 16 kg/m³ · 75 mm · 1.22 × 15.25 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 16
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.974
Your selection
Microfiber Micro WelEco 24 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 24
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.429
Your selection
Microfiber Micro WelEco 24 kg/m³ · 75 mm · 1.22 × 15.25 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 24
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 2.143
Your selection
Microfiber Micro WelEco 32 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.515
Your selection
Microfiber Micro WelEco 32 kg/m³ · 75 mm · 1.22 × 7.5 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 7500
- R (m²·K/W)
- 2.273
Your selection
Microfiber Micro WelEco 48 kg/m³ · 50 mm · 1.22 × 7.5 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 7500
- R (m²·K/W)
- 1.563
Your selection
Microfiber Micro WelEco 48 kg/m³ · 75 mm · 1.22 × 7.5 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 7500
- R (m²·K/W)
- 2.344
Your selection
Microfiber Micro WelEco 32 kg/m³ · 50 mm · 1.22 × 2.44 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 2440
- R (m²·K/W)
- 1.515
Your selection
Microfiber Micro WelEco 32 kg/m³ · 75 mm · 1.22 × 2.44 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 2440
- R (m²·K/W)
- 2.273
Your selection
Microfiber Micro WelEco 48 kg/m³ · 50 mm · 1.22 × 2.44 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 2440
- R (m²·K/W)
- 1.563
Your selection
Microfiber Micro WelEco 48 kg/m³ · 75 mm · 1.22 × 2.44 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 2440
- R (m²·K/W)
- 2.344
Your selection
Microfiber Micro WelEco 64 kg/m³ · 50 mm · 0.6 × 1.2 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 64
- Width (mm)
- 600
- Length (mm)
- 1200
- R (m²·K/W)
- 1.612
Your selection
Microfiber Micro WelEco 64 kg/m³ · 75 mm · 0.6 × 1.2 m
- Thickness (mm)
- 75
- Density (kg/m³)
- 64
- Width (mm)
- 600
- Length (mm)
- 1200
- R (m²·K/W)
- 2.419
See all models and sizesManufacturer documentsTechnical specifications
Product details
Unfaced glass wool, rolls and boards · thermal insulation and sound absorption
- Thickness
- 50–75 mm
- Density
- 16–64 kg/m³
- Thermal conductivity (λ)
- 0.038 / 0.035 / 0.033 / 0.032 / 0.031 W/m·K 16 / 24 / 32 / 48 / 64 kg/m³ at 24 °C · ASTM C518
- Noise reduction coefficient (NRC)
- 0.85 / 0.90 / 1.00 / 1.00 / 1.10 / 0.80 / 0.95 / 0.90 / 0.95 types 1650 / 2450 / 2475 / 3250 / 3275 / 4825 / 4850 / 6450 / 6475 (density-thickness); tested on the unfaced wool · ASTM C423
What is it?
Micro WelEco from Microfiber is a glass wool for thermal insulation and sound absorption, in rolls and boards, 16 to 64 kg/m³. It is installed under metal-sheet, tiled and concrete roofs, inside metal-stud partitions, and as sound-absorbing wall lining in meeting rooms, music rooms and machine rooms. The maker sheet records a pass for VOC emissions under CDPH v1.2 and refers to LEED v4 credits.
What is it made of?
Glass wool (fibreglass) · Roll
What can it help with?
Which sizes are available?
Thickness 50–75 mm · 16–64 kg/m³ — Choose a size
Where does the data come from?
Micro WelEco datasheet (MI0320)
Technical data from the manufacturer's documents Microfiber · Checked 12 Oct 2026
Technical specifications
All values come from the manufacturer's documents, with conditions and test standards. Values the documents do not state are not shown.
| Property | Value | Conditions / standard | Source |
|---|---|---|---|
| Thermal conductivity (λ) | 0.038 / 0.035 / 0.033 / 0.032 / 0.031 W/m·K | 16 / 24 / 32 / 48 / 64 kg/m³ at 24 °C · ASTM C518 | Micro WelEco datasheet (MI0320), p. 1 |
| Noise reduction coefficient (NRC) | 0.85 / 0.90 / 1.00 / 1.00 / 1.10 / 0.80 / 0.95 / 0.90 / 0.95 | types 1650 / 2450 / 2475 / 3250 / 3275 / 4825 / 4850 / 6450 / 6475 (density-thickness); tested on the unfaced wool · ASTM C423 | Micro WelEco datasheet (MI0320), p. 2 |
| Maximum service temperature | 232 °C | ASTM C411 | Micro WelEco datasheet (MI0320), p. 1 |
| Reaction to fire | Flame spread < 25 · Smoke developed < 50 | ASTM E84 | Micro WelEco datasheet (MI0320), p. 1 |
| VOC emissions | Pass | CDPH v1.2 | Micro WelEco datasheet (MI0320), p. 1 |
| Moisture absorption | < 1.0% at 49 °C, 95% RH | ASTM C1104 | Micro WelEco datasheet (MI0320), p. 1 |
| Mold resistance | No growth | ASTM C665 | Micro WelEco datasheet (MI0320), p. 1 |
| Standards / certification | TIS 486/2527, 487/2526 · ASTM | — | Micro WelEco datasheet (MI0320), p. 1 |
Models and sizes available
| Model | Thickness (mm) | Density (kg/m³) | Width (mm) | Length (mm) | R (m²·K/W) |
|---|---|---|---|---|---|
| 1650 | 50 | 16 | 1220 | 15250 | 1.316 |
| 1675 | 75 | 16 | 1220 | 15250 | 1.974 |
| 2450 | 50 | 24 | 1220 | 15250 | 1.429 |
| 2475 | 75 | 24 | 1220 | 15250 | 2.143 |
| 3250 | 50 | 32 | 1220 | 15250 | 1.515 |
| 3275 | 75 | 32 | 1220 | 7500 | 2.273 |
| 4850 | 50 | 48 | 1220 | 7500 | 1.563 |
| 4875 | 75 | 48 | 1220 | 7500 | 2.344 |
| 3250 | 50 | 32 | 1220 | 2440 | 1.515 |
| 3275 | 75 | 32 | 1220 | 2440 | 2.273 |
| 4850 | 50 | 48 | 1220 | 2440 | 1.563 |
| 4875 | 75 | 48 | 1220 | 2440 | 2.344 |
| 6450 | 50 | 64 | 600 | 1200 | 1.612 |
| 6475 | 75 | 64 | 600 | 1200 | 2.419 |
Pack quantities and prices — ask us on LINE
Applications
RoofLess heat and rain noise from the roofWallsStop sound through walls, reduce echo, keep heat outCeilingsHeat insulation above the ceiling and less sound through itHomesHeat, neighbour noise and echo at homeFactoriesFactory roofs, machine noise and hot pipework
Highlights
- VOC emissions pass under CDPH v1.2
- NRC published to ASTM C423
- 16–64 kg/m³, rolls and boards
Manufacturer documents
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- Thermal conductivity (λ)
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- Thermal resistance (R)
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- Density
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- Sound absorption (NRC)
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