Phenolic External Wall Insulation Systems
The Best Choice For External Wall Insulation
As a professional phenolic panel manufacturer, WT provides various types of phenolic panel products.
WT Phenolic external wall insulation systems incorporate high performance rigid thermoset phenolic foam insulation boards. This lightweight, low thermal conductivity insulation enables high levels of thermal performance to be achieved utilising thinner sections of insulation.
WT boards deliver unparalleled protection against heat loss with minimal thickness. Phenolic foam can achieve thermal conductivity values as low as 0.018 W/mK, making it the highest performing insulant on the market. Unaffected by air infiltration, the boards are water-resistant and resist both moisture and water vapour. Browse through our WT boards and discover premium thermal protection for walls, floors, and roofs.
- KS
- BS476
- ASTM E84
- CLASS0
- UL181
- A2
Key Features
- Higher levels of thermal performance for thinner levels of insulation
- Low density and lightweight
- Can assist in achieving Code for Sustainable Homes Levels 4-6, BREEAM and Passivhaus Standards
- Class O fire rating*
Ecopoints Score of 0.15 (m²) – Excellent
Environmental & Quality Standards
The system is manufactured and supplied in accordance with BS EN ISO 9001 (Quality Management)
The system is manufactured and supplied in accordance with BS EN ISO 14001 (Environmental Management)
Phenolic insulation is manufactured to EN 13166 and is CFC and HCFC free
The insulation has zero Ozone Depletion Potential (zero- ODP) and low global warming potential (GWP)
Recycling facility for uncontaminated insulation boards is available for site waste
Ecopoint Rating m² – 0.15 – Excellent Rating
Low U-Values are achievable in order to meet or exceed Code for Sustainable Homes, BREEAM and Passivhaus Standards
Green Guide to Specification A Rating achievable
Extremely airtight façades can be achieved
| Inspection Items | Technology Index |
|---|---|
| Thickness | 0.025/0.04/0.06/0.08mm or as your requirement |
| Length/Width | 2000mm × 1200mm(78.7402 inches x 47.2441 inches),3000mm × 1200mm(118.1102 inches x 47.2441 inches)，4000mm × 1200mm(157.4803 inches x 47.2441 inches) or as your requirement |
| Conventional Thickness | 30-220mm(1.1811-8.6614 inches) |
| Core Density | 40-60Kg/m³ |
| Heat Resistance | -150℃~150℃(-300℉~300℉) |
| Compression Strength | ≥0.18MPa |
| Leakage Air Volume | ≤1.2% |
| Smoke Density | ≤9(Non Toxic Gas Release) |
| Oxygen Index | ≥45 |
| Formaldehyde Emission | ≤0.5Mg/L |
| Thermal Conductivity | 0.019-0.02W(m/k) |
| Water Absorption | ≤3.7% |
| Maximum Air Flow | 15m/s(49.2126 feet/s) |
| Bending Strength | ≥1.1MPa |
| ThermalResistance | 0.86m2K/W |
| Dimensional Stability | ≤2%(70±2℃/48h)(158±35.6℉/48h) |
| Fire Resistance Time | ＞1.5h |
| Fire Ratings Becnh | A2 |
Benefits of Using Phenolic Insulation
High efficiency
High thermal efficiency with minimal material thickness.
Fire resistance
withstands high temperatures, limited smoke production.
Moisture-resistant
suitable for damp environments.
Durable
maintains shape and effectiveness over time.
Environmentally conscious
often includes recycled content and aligns with sustainable building practices.
What Is Phenolic Insulation?
Phenolic insulation is a rigid type of insulation with a closed-cell structure, commonly used in construction projects such as ductwork, walls, roofing, and flooring. Due to its design and thermal properties, phenolic insulation is the most thermally efficient insulation commonly used. Phenolic insulation is commonly available in R-values between R-6 up to R-24 in a single sheet of board, but two phenolic insulation boards can be used together to achieve higher R-values such as R-30 to R-45 depending on the thicknesses.
Phenolic foam is comprised of phenolic resin, a blowing agent, and an acid catalyst.
Thanks to its structure, consisting of 95% (or greater) closed cell content, this type of insulation exhibits a high resistance to moisture penetration. Moisture has a remarkably limited impact on the thermal performance of rigid phenolic insulation.
What’s more, you do not have to worry about rot or fungal growth when you choose phenolic insulation boards; the rigid thermoset insulation core is protected by two facings, which act as another barrier against the elements.
PRODUCT DESCRIPTION
Phenolic is a light-weight, low thermal conductivity based insulation, which enables high levels of thermal performance to be achieved utilising thinner sections of insulation. Used in our K Systems P external wall insulation (EWI) system, Phenolic insulation is an ideal solution for buildings that cannot increase their footprint significantly or have design features making thicker insulation impractical.
Benefits of Phenolic Insulation
High closed-cell content resists moisture penetration. Many phenolic insulation boards have a closed-cell content greater than 90%. The high resistance to moisture helps resist mold and R-value degradation, whereas mineral fiber insulation absorbs moisture and can then lose most of its R-value.
Thermal conductivity is much lower than other insulation materials such as EPS, XPS, PIR, or mineral fiber products. That is why phenolic insulation can help you achieve a required thermal performance with a much thinner profile than other insulation materials. Phenolic insulation can commonly provide thermal values of around .018 W/M-K across various thicknesses.
With exceptional fire performance, phenolic insulation demonstrates low flame spread and smoke emission. Since it is a thermoset material, it hardens and chars in fire situations. The material gives off very little smoke compared to thermoplastics, such as polystyrene which melt, soften, and give off thick black smoke. Many brands have a UL 723 Flame spread and/or UL 181.
Phenolic closed-cell insulation is free of CFCs and HCFCs and some are also ZERO-ODP (Ozone Depletion Potential) and a low GWP (Global Warming Potential).
This fiber-free insulation minimizes the risk of loose fibers entering the airstream through ductwork, since distributed air does not come into contact with an insulation material that produces loose fibers
Our Pro-R pre-insulated duct systems use high-quality phenolic insulation to provide industry-leading energy efficiency for both outdoor and indoor applications. Plus, our innovative duct systems are built to last with a durable metal exterior, so you get a solution that not only performs but withstands the punishment from nature.
Contect WT
sales@wtinsulation.com
Phone
0086-13771601681
Address
No.5,North Waihuan Road,Huangtang Industrial Zone, Xuxiake Town, JiangYin City, Jiangsu Province, China