Oryza BGT application guide
Oryza BGT is a non-flammable and flexible high-performance insulation solution consisting of silica aerogel integrated into a blanket carrier. Due to advanced processing technology dust release during handling and installation is strongly reduced.
Due to its excellent thermal insulation performance Oryza BGT has been used successfully in chemical and oil & gas plants, household appliances and buildings, where it helps to save energy and reduce CO2 emissions.
Oryza BGT enables very slim thermal insulation in applications with highly limited available space. Due to its fire class A1 rating, it can be used in any building type.
Learn more about Oryza BGT here.
Product Highlights
Highest energy efficiency due to low thermal conductivity
Thinnest thermal insulation available as flexible rolls in 3, 5, and 10 mm thickness and multi-layer boards in 20, 30, 40 and 50 mm thickness
Maximum safety due to non-flammability (fire class A1)
Simple to process, low-dust technology
Wide operating temperature range
Water-vapor diffusive due to open aerogel pore structure
Robust and durable as shown in offshore applications
German ETA
Technical Properties
Thermal conductitivity:
Oryza BGT: approx. 0.019 W/(m*K)
Oryza BGT LL: aprox. 0.015 W/(m*K)
Thickness: flexible rolls of 3 / 5 / 10 mm thickness and multi-layer boards of 20 / 30 / 40 / 50 mm thickness
Density: 160 kg/m3
Operating temperature: -165 to 650 °C
Fire class: A1 (EN 13501)
Delivery
Oryza BGT flexible rolls are shipped wrapped in foil on a pallet.
Width: 1.50 m
Thickness and length:
10 mm roll – 20 m length
5 mm roll – 40 m length
3 mm roll – 60 m length
Oryza BGT multi-layer boards are shipped wrapped in foil on a pallet.
Length: 50 / 73 cm
Width: 73 cm
Thickness: 20 / 30 / 40 / 50 cm
Storage
Despite excellent mechanical stability, Oryza BGT should be handled with care.
Please take note of the following recommendations:
Store the material on an even and dry surface.
Do not stack more than three rolls of Oryza BGT on top of each other.
Protect the material from direct sunlight, rain and extreme weather.
Avoid contact with organic solvents.
Do not throw or drop Oryza BGT to avoid dust release.
Disposal
Residual material can be disposed of similar to (new) mineral wool.
Completely empty packaging material can be handed over to recycling.
Application examples for thermal insulation
Building envelope/exterior wall insulation: Curtain-wall facade, exterior insulation systems (EIFS, ETICS), stud and cassette walls.
Historical facades, heritage buildings.
Buildings directly bordering the property boundary.
Entrance areas, passageways and escape routes.
Facades adjacent to balconies and terraces.
Window reveals.
Sun blinds and roller shutters.
Thermal bridges, connections and niches.
Areas with a lack of space or demanding geometries.
Cutting and Sawing
The material can be cut with a cutter and sawn with standard saws.
Below are some recommendations:
Place Oryza BGT on a flat and solid surface when cutting.
For cutting, use a cutter blade or insulation knife.
For cutting with a cutter blade, slide the blade multiple times along a guide rail until the cut pieces are separated.
For sawing, use a saw with a wavy blade. Do not use a saw with dental blade.
Use a circular saw for a straight cuts.
Use a band saw or a portable jigsaw for straight and curved cuts.
Use a hole saw/core drill for circular cuts.
Notches and profiles can be introduced by sawing or cutting, but should not be mortised.
In general, saw blades or knives used should have a wavy or flat blade.
Blades with a low number of teeth or staggered teeth should be avoided.
Adequate dust extraction is recommended to avoid unnecessary dust development during drilling or sawing indoors.
Accruing dust should be removed with some soap and a wet cloth or a suitable vacuum cleaner.
After cutting Oryza BGT, it is recommended to store the stack for some time before further processing (such as gluing or application) so that the surface can become flat.
Joining multiple layers
If necessary, multiple layers of Oryza BGT can be joined together mechanically or by using appropriate adhesives.
The choice of adhesive and adhesive amount may influence the properties of multi-layered Oryza BGT such as fire behavior, thermal conductivity, and water vapor permeability.
When choosing any adhesive system for Oryza BGT, the application procedure, relevant requirements and permit-relevant as well as legal guidelines for the specific use case need to be considered and checked (e.g., tensile strength or fire rating). Testing is highly recommended.
Especially when the fire rating A1 is to be achieved in a multilayer setup, inorganic/mineral adhesives are recommended.
If water-vapor permeability of Oryza BGT is to be maintained, appropriate selection of the adhesive is very important. Furthermore, only partial surface coverage of the adhesive will improve water-vapor permeability.
If excess dust is present on the Oryza BGT surface, cleaning is required to achieve good bonding between layers.
Depending on the selected adhesive type, application of adhesive on one or both layer surfaces, and full-area or partial-area distribution of adhesive on the surface can lead to the desired bonding strength. Application of pressure and/or heat treatment during the adhesive curing may be required. A microwave may be used for efficient drying.
For adhesive mortars or renders, first part of the adhesive should be worked into the Oryza BGT surface applying some pressure to create a good interaction between the adhesive and the aerogel. The aerogel layer should still be partially visible. Then the remainder of the adhesive should be applied on top using a notched trowel.
Below are some recommendations:
Organic adhesives such as polyurethane-based adhesive (filled or unfilled).
Commercial mortar-, cement- or geopolymer-based binders with polymer additives (e.g. Sto Levell Novo, Caparol Capatect 190)
Inorganic adhesives such as water glass (use potassium water glass, avoid using sodium water glass).
Avoid using adhesives based on organic solvents.
Application example 1: Thermal insulation of building envelope
Substrate preparation
The substrate/wall must be stable, clean, dry and free of substances that may impede bonding and it needs to be able to support the weight of the system to be installed. The temperature should be between 5°C and 30°C. The substrate/wall should be kept free of moisture such as rain.
Compensate any irregularities of the existing substrate/wall with suitable measures. If loose pieces are present in the loosely bonded layer, remove and refill the structure as required. If the surface is dusty, clean the surface before application of the material.
If desired, e.g. to keep the historical look of a facade, the unevenness of a surface or structure can be replicated by the flexible nature of Oryza BGT. In this case it is sufficient to have the substrate dry and free of dust and to remove any loosely connected pieces.
Bonding
It is highly recommended to carry out an adhesion test before application of any material on the substrate (e.g., bonding strength test according to ETAG 004).
Oryza BGT can be bonded with many mineral-based adhesives with polymer additives (e.g. commercially available adhesive and reinforcing mortar such as Sto Levell Novo or Caparol Capatect 190).
Bonding should be carried out using the Floating-Buttering method. Apply the adhesive on the Oryza BGT surface, press and spread out to achieve better bonding (preferably on the entire surface). The adhesive should be pressed into the aerogel layer, and the aerogel layer should still be visible. Then apply the remainder of the adhesive using a notched trowel to achieve the desired coverage. Apply the adhesive to the substrate/wall using a notched trowel. After applying adhesive to Oryza BGT and the substrate/wall, place and press Oryza BGT against the substrate/wall.
Additional mechanical fixing using dowels may be required in some cases.
Due to the low thermal conductivity of Oryza BGT, potential thermal bridges will affect the overall insulation performance significantly. Hence, it is important to avoid those effects by minimizing gaps and keeping any gaps free of mortar.
Reinforcement
Textile mesh can be installed for reinforcement.
Below is an example of a textile mesh application procedure:
Apply any suitable mineral adhesive (e.g., adhesive and reinforcing mortar such as Sto Levell Novo or Caparol Capatect 190) on the entire surface of Oryza BGT and comb it using a notched trowel.
Apply reinforcing mesh and embed it into the adhesive layer.
Mechanical attachment
If necessary, Oryza BGT can be pierced using a drill and fixed mechanically with dowels. Any commercially available drill can be used.
The type of dowels, their locations, and appropriate quantity depend on the application and system construction. Special dowels from the EIFS (Exterior Insulation and Finish System) may be used to reduce the thermal-bridge effect.
The outer surface layer can be designed as desired.
Application example 2: Ventilated facade
Using Oryza BGT as an insulation layer in a ventilated facade allows the anchor dimensions to be reduced, thus reducing the requirements for static performance and thermal decoupling of the anchors as well as reducing the total thickness of the insulation system.
This is an additional benefit besides the general space-saving effect of high-performance insulation.
Application example 3: Roller shutter cases
When placing Oryza BGT behind a roller shutter box or sunblind system, the box front can be aligned with the facade surface without creating a thermal bridge.
Application example 4: Window reveal
When retrofitting internal insulation, the continuous thermal bridge in the area of the window frame and the window reveal is reinforced by the now cooler existing wall.
If there is no effective insulation due to the limited space available around the window, the wall surface temperature drops locally and moisture from the room air can precipitate on the wall surface.
As a result, mold can form on the wall surface and can cause subsequent damage to the object. Slim reveal insulation with Oryza BGT can minimize this thermal bridge and therefore reduce moisture condensation and mold formation.
Application example 5: Conservation of heritage building elements
When installing a well-insulating EIFS system on a building with small balconies, the EIFS system can lead to a reduction of balcony floor space and therefore non-walkable balconies.
By using Oryza BGT in the balcony area valuable space can be preserved with minimum effort.
Application example 6: Electrical/water insulation in EIFS system
In many building retrofitting projects various measures to improve the building comfort are executed simultaneously such as the improvement of the thermal performance of the facade together with the modernization of installation pipes for water and electricity.
Combining Oryza BGT with conventional insulation materials enables a channel for pipe installation to be created within the EIFS layer, thus avoiding extensive dusty indoor cutting works.
Safety recommendations
General
Do not eat, drink or smoke during installation of Oryza BGT. Wash your hands (and if required your face) before breaks or at the end of the work day with water and soap.
Avoidance of dust formation
Despite the very low tendency of dust formation of Oryza BGT, inadequate transport, handling, cutting, and installation of material may cause dust development.
Below are a few recommendations to avoid excess dust:
Do not throw the material.
Use dust extraction during cutting, sawing, and drilling.
The material can be wettened to reduce dust release.
Do not unnecessarily hit the material by hand or with any devices (such as a hammer).
If necessary, use local exhaust ventilation to reduce/remove the dust generated at the workplace.
Respiratory protection
In case of dust formation, use a particle filter with a high efficiency/filter class (e.g., EN 143 or 149, Type P3 or FFP3).
Hand/eye protection
Use leather, nitrile, or nitrile-coated cotton gloves (e.g., EN 388, 374).
Use safety glasses with side shields (frame goggles) (e.g. EN 166).
Body protection
Use standard work clothes and shoes. If necessary, full body protective suits can be used e.g. single- or multi-use full-body type 4, 5, or 6 overalls.
Skin care
Direct skin contact with Oryza BGT dust can result in water-repelling skin and a dry skin feeling.
Dust can be removed best with water and soap (not just water).
For skin care, conventional oil-containing cosmetic products are most suitable.
Disclaimer
The data contained in this document as well as advice or other support services are based on our current knowledge and experience and are provided according to our best knowledge. In view of many factors that may affect processing and application of our products, this data does not relieve processors from carrying out their own investigations and tests, particularly with regard to the suitability of the goods supplied for the processes and purposes they intend to use them for; neither does this data imply any guarantee of certain properties, or the suitability of the product for a specific purpose. Any descriptions, drawings, photographs, data, proportions, weights, measured values etc. given herein may change without prior notice and do not constitute the agreed contractual quality of the product. It is the responsibility of the recipient of our products to ensure that any proprietary rights and existing laws and legislation are observed.
