PAVAWALL-GF XL is a render optimized, natural and ecological, thermal insulation board based on wood fibre. The high heat accumulating capacity makes the board ideal for protection against summer heat.
Always consult the local regulations and installation guidelines as well as the manufacturer’s recommended render systems. This board follows on from the now obsolete Pavatex Pavadentro and Diffutherm boards.
• Convenient size for easy and quick application.
• Ideal for timber framework and exterior masonry facades.
Because the board is a plaster carrier it is ideal for EWI, IWI and internal roof installations.
Health, Environment and Safety
This product does not contain any substance which is likely to be detrimental to your health or to the environment and complies with generally admitted Health and Safety Requirements.
Storage
Store the insulation boards on a flat surface, keep dry and protected from sunlight.
**IMPORTANT** – Please note:
Wet, damaged, deformed or soiled insulation boards must not be installed. The PAVAWALL GF XL panels do not act as a rain screen during the construction phase for the ETICS they must therefore be protected from bad weather. If there is a risk of exposure to the weather, the panels must be effectively protected (e.g. by installing a rainscreen in front of the scaffolding) until the work is completed. Panels stored on site must also be protected from the elements, for example by means of a tarpaulin, or a clean and tight seal pallet cover.
PAVAWALL GF XL panels must be coated within 2 months of installation.
Characteristics
Density [kg/m3] 40-60 mm 165 80-160 mm 130
Thermal conductivity (λd) (EN 13171) [W/(m.K)] 40-60 mm 0,043 80-160 mm 0,040
Specific heat capacity (c) [J/(kg.K)] 2100
Water vapour diffusion resistance coefficient (μ) [-] 40-60 mm 4 80-160 mm 3
Reaction to fire (EN 13501–1) E
| Thickness | 40mm, 60mm, 80mm, 100mm, 120mm, 140mm, 160mm |
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FAQs
PAVAWALL-GF XL Insulation Board FAQs
What is PAVAWALL-GF XL insulation board?
PAVAWALL-GF XL is a natural, ecological wood fibre insulation board designed to act as both thermal insulation and a render or plaster carrier. It is vapour permeable, moisture buffering and specifically engineered for use within breathable wall build-ups, particularly external façades.
Where can PAVAWALL-GF XL be used?
• PAVAWALL-GF XL is a highly versatile board and can be used in several applications, including:
• Clad external wall insulation systems on masonry, timber frame and CLT structures when protected with a breathable membrane
• ETICS systems with compatible renders
• Internal wall insulation to directly receive a lime plaster
This flexibility makes it suitable for both new build and retrofit projects.
Can PAVAWALL-GF XL be used on external clad systems?
Yes. PAVAWALL-GF XL can be used behind external cladding systems on masonry, timber frame or CLT structures, provided it is protected with a suitable breathable weather-resistant membrane. This allows the wall build-up to remain vapour open while offering reliable thermal performance.
What thicknesses and board sizes are available?
PAVAWALL-GF XL boards are available in thicknesses ranging from 40 mm up to 160 mm. Each board measures 1860 mm by 590 mm excluding the measurement for the tongue, with the number of boards per pallet varying depending on thickness.
What are the key physical properties of PAVAWALL-GF XL?
Key technical characteristics include:
• Density of approximately 165 kg/m³ for 40 to 60 mm boards and 130 kg/m³ for 80 to 160 mm boards
• Declared thermal conductivity of 0.043 W/mK at thinner thicknesses and 0.040 W/mK at greater thicknesses
• Specific heat capacity of around 2100 J/kgK
• Vapour diffusion resistance factor of 3 to 4
• Reaction to fire classification of Euroclass E
These properties support both thermal performance and breathability.
What thermal resistance values does PAVAWALL-GF XL provide?
Thermal resistance increases with board thickness. Typical values include:
• 40 mm: approximately 0.90 m²K/W
• 60 mm: approximately 1.35 m²K/W
• 80 mm: approximately 2.00 m²K/W
• 160 mm: approximately 4.00 m²K/W
Higher thicknesses provide improved insulation performance and reduced heat loss.
Does PAVAWALL-GF XL help with summer overheating?
Yes. The dense wood fibre structure provides high heat accumulation capacity, which slows heat transfer through the wall. This can help moderate internal temperatures and improve comfort during warmer periods.
How does PAVAWALL-GF XL manage moisture?
PAVAWALL-GF XL is vapour permeable, with a low vapour diffusion resistance factor. This allows moisture vapour to move through the wall build-up, helping regulate internal humidity levels and reducing the risk of condensation when used in breathable constructions.
What is the fire performance classification of PAVAWALL-GF XL?
PAVAWALL-GF XL has a reaction to fire classification of Euroclass E under EN 13501-1, which is typical for wood fibre insulation products used within protected wall assemblies.
Is PAVAWALL-GF XL environmentally friendly?
Yes. PAVAWALL-GF XL is manufactured from wood fibre sourced from responsibly managed forestry. It contains no substances likely to be harmful to health or the environment and supports sustainable, low-impact construction.
How should PAVAWALL-GF XL boards be stored on site?
Boards should be stored flat on a level surface, kept dry and protected from weather and direct sunlight. No more than four pallets should be stacked on top of each other to prevent damage before installation.