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prEN 1849-1 Public enquiry
Comment end date 2026-12-27
Flexible sheets for waterproofing - Determination of thickness and mass per unit area - Part 1: Bitumen sheets for roof waterproofing

This document specifies a method for the determination of thickness and mass per unit area of bitumen sheets for roof waterproofing. The measurement of thickness is appropriate for most bitumen sheets including sheets with a factory applied mineral finish. The determination of thickness is not applicable to sheets with pronounced surface texture or to sheets with a substantial fibrous backing. Where it is required to characterize these products, mass per unit area should be used instead. The determination of mass per unit area serves to verify the value stated by the manufacturer for information and is not applicable to perforated materials.

prEN 14509-5 Public enquiry
Comment end date 2026-11-08
Factory-made double skin metal faced insulating sandwich panels - Part 5: Design methods

This document specifies design methods for combination of actions and spans for factory made double skin metal faced insulating sandwich panels (hereafter sandwich panels). The sandwich panels are for use in self-supporting and structural applications in roofs, in external and internal walls (including partitions) and in ceilings in buildings as well as those in cold store applications. This document covers uniformly distributed loads, line loads perpendicular to the span over the full width of the panel and thermal gradients, it gives no information about normal forced axially loaded sandwich panels, torsional loaded sandwich panels or sandwich panels as a part of a diaphragm.

prEN 14509-2 Public enquiry
Comment end date 2026-11-08
Factory-made double skin metal faced insulating sandwich panels - Part 2: Structural applications

This document covers structural double skin metal faced insulating sandwich panels intended to be used as elements for structural applications in construction works in roofs, in external and internal walls (including partitions) and in ceilings (hereafter referred to as structural sandwich panels). The structural sandwich panels consist of two faces made of: — steel; — stainless steel; — aluminium; — aluminium alloys; — copper and insulating core made of — rigid polyurethane foam (PU) (see 3.1.23); — expanded polystyrene (EPS) (see 3.1.21); — extruded polystyrene foam (XPS) (see 3.1.22); — phenolic foam (PF) (see 3.1.20); — mineral wool (MW) (see 3.1.19) either by using an auto-adhesive bonding technique or by using a separate adhesive layer. Products which are — curved; — perforated (perforated face); — used for stabilization purposes having insulation core material of phenolic foam; — consisting of two or more clearly specified layers of different insulating core materials (multi-layered) or of different materials per face; — used as ceilings when fastening is under permanent tension load; — parts of clean room kits, conditioning room kits, cold storage room kits and cold storage building envelope and building kits; — reused are excluded from this product definition.

prEN 14509-3 Public enquiry
Comment end date 2026-11-08
Factory-made double skin metal faced insulating sandwich panels - Part 3: Test methods for determining mechanical strength, building physical behaviour and durability

This document specifies test methods needed for determination of mechanical strength, building physical behaviour and durability of factory-made double skin metal faced insulating sandwich panels (hereafter sandwich panels) for both self-supporting and structural applications in roofs, in external and internal walls (including partitions) and in ceilings in buildings as well as those in cold store applications.

prEN 14509-4 Public enquiry
Comment end date 2026-11-08
Factory-made double skin metal faced insulating sandwich panels - Part 4: Test methods for fixing of panels to substructure and for determining restraining effect on substructure

This document specifies test methods for determination of characteristics for fixing of factory-made double skin metal faced insulating sandwich panels (hereafter referred to as sandwich panels) to substructure and for stabilization of substructure. Sandwich panels are used for both self-supporting and structural applications in roofs, in external and internal walls (including partitions) and in ceilings in buildings as well as those in cold store applications.

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