TECHNOLOGY AND PRODUCT
What is open cell foam silverFoam Ag40?
silverFoam Ag40 is a light PUR foam spray applied in dry, light partitions. After connecting the components, the material increases in volume, fills the spaces between the structure elements and creates a continuous layer without cut joints.
The system is used primarily in attics, wooden ceilings and frame walls. Its effectiveness is determined not only by the recipe, but also by the design of the building element, surface preparation, spraying parameters and control of the finished layer.
PIANA
Open-cell foam
KEY FEATURES
Technology to be judged as a whole system
The material parameters are important only together with the appropriate thickness, spray continuity and correctly designed barrier layers.
01
Lightweight structure
A small density reduces the additional load on the ligaments and other lightweight structures.
02
Non-cut spray
The expanding material adapts to rafters, corners and installation passes.
03
High vapour permeability
Low diffusion resistance allows you to design diffusion-open building elements, without the promise of "breathing walls".
04
Controlled Application
The temperature, pressure, proportions of components and the condition of the substrate must be checked by the contractor.
STANDARD OF APPLICATION
How does spray insulation occur?
A repeatable effect requires control of each stage – from the recognition of the building element to the acceptance of the completed layer.
- Assessment of the bulkheadConstruction, access, substrate, humidity and difficult details.
- Seat preparationClean, stable and properly dry surface and secured environment.
- Set parametersControlled temperature, pressure and component proportions.
- Spray and expansionApplication by successive transitions according to system requirements.
- Layer controlCheck the continuity, thickness and details before covering the insulation.
PRODUCT DATA
Key parameters of silverFoam Ag40
The values are derived from the product material. For calculations and design, data from the current declaration of performance of the relevant batch should be used.
λD
0,038 W/(m·K)
declared thermal conductivity
μ
≤ 5
diffusion resistance factor
E
fire reaction class
according to the declared classification
≤ 11 kg/m²
Short-term saturation
for partial immersion
SELECTION FOR THE BUILDING ELEMENT
silverFoam Ag40 and silverFoam CC35 HFO are not interchangeable products
Both foams are applied by spraying, but their structure directs them to different compartments and working conditions.
| Characteristics | silverFoam Ag40 | silverFoam CC35 HFO |
|---|---|---|
| Construction | light, elastic and open diffusion | compact, rigid, high-restricted cells |
| Typical places | loft, scythes, wooden ceilings and skeletal walls | foundations, floors, flat roofs, halls and sheet metal |
| Main criterion | small mass, matching and acoustic comfort | resistance to moisture, rigidity and load |
| Confirmed | layer system, para-isolate and ventilation | ground condition, UV protection and damage |
APPLICATIONS OF silverFoam Ag40
For light and dry partitions
The final selection depends on the design, humidity and arrangement of the remaining layers. The following areas are typical applications for open cell foam.
01
Roofing lofts and mows
Filling the space between rafters, with moats, masonry and roof windows.
02
Wooden ceilings
Light insulation layer in designs, where small mass and acoustic comfort are important.
03
Skeletal walls
Fit to structural, installation and irregular elements in the dry partition.
WORK REPRESENTATION
What to check before covering up the insulation?
- compliance of the product with the offer and project
- continuity of layers at rafters, corners and installations
- thickness at agreed check points
- no exposed cracks, cavities and weak grip areas
- photo documentation prior to the execution of subsequent layers
- recommendations for air conditioning and the deadline for further work
TECHNOLOGY QUESTIONS
FAQ
01
Does active silver replace ventilation and protection against moisture?
No. The addition of active silver is part of the foam recipe, but it does not remove the causes of moisture. The roof, vapor barrier, ventilation and partition connections still need to be properly designed and constructed.
02
Is silverFoam Ag40 suitable only for the attic?
No. Open-cell foam is also used in wooden ceilings and frame walls. It is intended primarily for light, dry partitions protected from direct water exposure.
03
Does the spray remove all the thermal bridges?
Spraying reduces leaks resulting from cutting the material, but does not eliminate bridges created by the structure. You also need to evaluate rafters, wreaths, walls, connectors and connections with other building elements.
04
What depends on the thickness of the foam silverFoam Ag40?
From the value of the declared thermal conductivity of a specific product, the required insulation of the building element, its structure and project conditions. Thickness should not be selected according to one universal value.
05
When can you cover up the completed insulation?
After the material reaction is completed, the space is ventilated, the layer is accepted and documentation is prepared. The date and rules of further work should be confirmed by the contractor in accordance with the product documentation and construction site conditions.
Sources and timeliness
Knowledge status: 14/09/2026. The parameters must be confirmed in the current technical data sheet and declaration of performance of the relevant batch. The selection of the layer system requires reference to the design of a specific building element.
Get a reliable valuation for your building
+48 722 330 300Send the location, photos, approximate square footage and description of the building element. A silverFoam Certified Contractor will select the product, thickness and scope of preparation and acceptance.
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