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Planning principles

Facade Planning Principles

  • • The local building regulations of the State Building Order (LBO) and the currently valid standards of the
    » DIN 18351 Facade work
    » DIN 18516 Exterior wall cladding
    » DIN EN 4102-1 Fire behavior of building materials and components
    » DIN EN 15534-5 Composite facade


    • Field of application of the facade system with regard to fire protection: The substructure of our system consists exclusively of non-combustible materials. The panels are normally flammable. This means that it can be used for residential buildings in building classes 1 to 3 in all federal states. In special constructions, a case-by-case analysis is regularly required because in these, higher requirements may already be placed on the building material class in the aforementioned building classes. In the context of protection-oriented fire protection concepts, there is often an extended field of application.

    • Area of application of the facade system with regard to stability: Due to the static requirements, we refer to the Model Administrative Regulation Technical Building Regulations (MVV TB) as a reference of the German Institute for Construction Technology. In Chapter D, it regulates construction products that do not require a certificate of usability. Furthermore, point D 2.2.2.1 describes facade elements for external wall cladding that are attached in accordance with generally recognized rules of technology:

    » small-format facade elements with ≤ 0.4 m² surface area and ≤ 5 kg net weight
    » board-shaped facade elements with ≤ 0.3 m width and support distances through the substructure of ≤ 0.8 m

    Our facade system fulfills the aforementioned requirements according to the currently offered system dimensions. We can provide static proofs for the substructure and the anchor fastening.
    Our non-load bearing and non-reinforcing surrounds for window and door openings, window sills and their fixings also do not require a certificate of usability in accordance with section D 2.2.2.4 MVV TB.

    • The megawood® facade panel is delivered from the factory with the angle cut and the front side beveled in a system length of 2,400 mm (panel length 2,396 mm +0/-1 mm). The distribution of the panels in the octameter system should always be designed so that the waste is kept to a minimum.

    • By combining the three system widths (80/160/240 mm), any dimension on the building can be optimally mapped, resulting in the ideal solution for all borders and openings.

    • The megawood® facade system can be installed in areas exposed to splashing water. The distance to the upper ground surface must be at least 40 mm. Waterproof insulation must be used in areas exposed to splashing water.

    • The span of the panels is 800 mm in the multi-field system and 600 mm in the single-field system. Consequently, the supporting profiles must be laid out so that the maximum center distance in the multi-field system does not exceed 800 mm and in the single-field system 600 mm. The exact distances between the supporting profiles depend on the conditions on site and the static requirements (see design variants).

    • The span of the supporting profiles is max. 1,000 mm (500 mm when installed without wall brackets). This means that the distance between the mounting points for the wall brackets or supporting profiles must not exceed 1,000 mm. The actual mounting points depend on the local conditions and static requirements (see design variants).

  • • The substructure system (supporting profile) must be separated by a joint of at least 4 mm every 6 m. Caution: always use two separate fixing points for this (see detail fire barrier/system separation). This results in an 8 mm joint in the facade every 6 m.

    • The wall brackets or supporting profiles must be firmly attached to the substrate. The thermal break must be created using a granulate pad (see horizontal design variant).

    • Before mounting, check the wall for unevenness and select the appropriate wall brackets. Unevenness of up to 30 mm can be compensated for with the grid of the wall brackets. Unevenness greater than 30 mm should be compensated for with the next size of wall bracket.

    • The L-profile can be used as a start profile, enclosure profile, fire barrier and system separator (see detail 5).

    • Before installing the panels, the contractor must properly and professionally determine the fixed and movable bearings and establish them by hammering in the locking wedge located on the wall bracket.

    • The panels must be installed so that the orientation of the bevel aids water drainage to the outside.

    • The panels are fixed in place by installing a spacer on the front side. When the panel is mounted vertically, the 240 mm wide panel is secured with two spacer fixings on the lower front side. For the outer panels, the spacer fixings are screwed to the panels. In the façade area, they are inserted (see detail 7a).

    • The front panel joint should always be centered on the supporting profile. The Fix spacer secures the 4 mm joint (see detail 7).

    • If none of the panel ends is centered on the supporting profile, the spacer must be shortened by the distance of the tongue and screwed to the panel (see detail 7b).

    • megawood® panels have different color nuances and integrated color gradients in the respective colors. We recommend mixing the panels before installation to achieve a harmonious facade appearance. This applies in particular to the three system widths.

    • megawood® panels must always be pre-drilled before screwing in the screws.

    • The maximum permissible free overhang of the panels over the supporting profile is 100 mm. When using the corner adapter with Spann Fix, the maximum permissible overhang of the panels over the supporting profile is 400 mm. The maximum freely cantilevered overhang of the supporting profiles over a fastening point is 250 mm.

    • A minimum distance of 4 mm must be maintained between the panel and fixed components.

    • The panels must be stored properly and protected from damage. It should be noted that the packaging film is not UV-resistant and is not suitable for long-term outdoor storage.

    • The facade system is designed to withstand its own weight and wind loads. Additional loads must always be connected to the load-bearing components.

    • The megawood® construction plan is the basis for the installation. We do not provide any warranty in the event of deviations from the construction plan or if non-original megawood® articles are used.