Panel F

PU Foam Panel F is a one component, quick-hardening polyurethane adhesive, packaged in an aerosol can, specifically developed and tested for bonding various types of insulation panels for underfloor perimeter insulation and thermal insulation applications in general. The reduced post-expansion and the high texture and adhesion of the fresh adhesive make it possible to install panels of various types with different thickness, such as EPS, XPS, PU, rock or glass wool, etc., on various types of substrates (mineral substrates, brick, concrete, plaster, wood, metal, glass, plastic, slated or aged/oxidised bituminous membranes) in accordance with the ETAG 004 tests for external thermal insulation systems. It can be used to fill cracks that may occur during the installation of the boards. Its particularly homogeneous and fine cell structure contributes to acoustic and thermal insulation without creating any discontinuity. Despite the excellent performance of PU Foam Panel F in terms of technical and application characteristics in the installation of external thermal insulation systems, traditional mechanical fastening systems (dowels, etc.) that guarantee the anchorage of the boards through the thickness of the substrate are still needed to prevent the risk of adhesive detachment in case of insufficiently solid and consistent surfaces.

Instructions for use

The substrates must be free of oil, grease and dust. Especially in the case of application on non-porous substrates, it may be useful to dampen the substrates beforehand in order to provide the fresh product with the necessary humidity, for complete curing.

1. Shake the spray can for at least 15 seconds before use and repeat this step after work intervals.
2. Remove the protective cap. Turn the spray can upside down so that the valve is facing downwards and screw it onto the dispensing gun. Point the barrel of the gun in the desired direction and press the applicator.
3. Apply the adhesive on the back of the panel 3 cm away from the edge forming a perimeter bead of about 2-3 cm. Apply a bead of the same size in the centre in the shape of a “W”.
4. Wait one minute before positioning the panel on the wall: the purpose of waiting is to avoid that the post-expansion of the adhesive, even if limited, may lead to macroscopic misalignments between the panels installed. The panels must in any case be applied within the time of surface film formation of the product. As an indication, this time is 3 minutes at 20 °C, but for a precise check it is advisable to carry out a test on the construction site in order to avoid the formation of a hardened surface film that is no longer adhesive.
5. Align the panel with the surrounding panels by pressing firmly and using a fixed base to prevent it from slipping later.
6. Depending on the temperature and humidity at the time of application, the adhesive will be sufficiently hardened within 15-45 minutes and then, after 2 hours, any unevenness can be cut and smoothed.
7. In case of installation of external thermal insulation boards, after 2 hours apply the mechanical fastenings according to the standards.
8. If the wall to be covered with plasterboard (insulated or not) is not perfectly coplanar, in order to guarantee a correct alignment of the boards and therefore the creation of a regular and flat façade, draw reference marks and use wedges and screws to adjust the position and keep them in place until the adhesive has hardened (1 hour is normally sufficient).

Cleaning
Any traces of non-hardened PU Foam Panel F, e.g. on clothing, window frames, etc., can be cleaned with Cleaner for PU-foams. The hardened product can only be removed mechanically (scraping or grinding). Possible residues in the valve can be easily removed when it has fully hardened. This product contains flammable components, so use only in well-ventilated areas.

Storage

Store in a cool place in an upright position. Storage in a horizontal position quickly leads to incrustations under the valve which irreparably compromise the extrusion of the adhesive. PU Foam Panel F is stable for at least 12 months when stored upright, in a cool and dry place (between 15 and 25 °C) and in its original unopened packaging.

Warnings

Panel F, although extremely valid from a technical-application and performance point of view in the laying of coatings, does not exclude the traditional mechanical sealing systems (dowels, etc.) which guarantee the anchorage of the panels in the thickness of the substrate to prevent the risk of adhesive detachment should the surface not be sufficiently solid and consistent.
In case of bonding on new bituminous membranes, prefer Bitumen Seal adhesive/sealant.
The Panel F can is a pressurised container. Please read the information on the safety data sheet carefully.