Core insulation

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General information

When the thermal insulation forms a spatial separation, mainly an external walling, between two “massive” structural elements, together with them, it is called core insulation (in the classical sense, for example, the external walls of precast concrete buildings).
Though these walls are layered structures, they still belong to the single-shell category, because there is no ventilated air layer between the layers.

The factory (pre)fabricated sandwich panels where the XPS core forms an on-site assembled spatial partition together with the external and internal metal (possibly plastic or wooden) armour are also core insulations.
The RAVATHERM XPS 300 WB or RAVATHERM XPS 300 STG products can also be used in core thermally insulated structures. The advantage of the latter is the large board size and the tongue-and-groove jointing which makes it possible to use it as permanent insulated formwork or application along with the concreting technology from two sides at the same time.

The thermal insulation core installed in the expansion joint between two buildings may also be considered as a special core insulation.

Other information

Core insulated walls can also be manufactured by factory prefabrication (panel walls, sandwich panels) or on site. They are typically made with an internal structural layer, enclosed thermal insulation and external crust(-forming) layer.
Thanks to the advantageous characteristics of RAVATHERM XPS, in can be perfectly used with both construction methods, since, due to its closed-cell material structure, it practically does not take up construction moisture; due to its high strength, it endures both factory (pre)fabrication and on-site construction loads (feeding of bulk materials, compacting, vibration) without damage.
In prefabrication, the external cover of these walls is reinforced exposed concrete, while on site, it is more likely to be walled structure.

Technical

In the case of core-insulated single-shell reinforced concrete wall panels, the heat tolerance of XPS has to be considered. During a heat curing process, temperature may not exceed +75°C!
The thermal bridge effect of the connecting steel elements ensuring that the two external layers work together have to be taken into account by “oversizing” the core insulation or avoided by using connecting elements without thermal bridges.

ÉNGY, TERC code

  • Facade core thermal insulation 48-007-21.1.1.8.3
    PRODUCT NAMETHICKNESSÉNGY CODE (MV)TERC CODE
    RAVATHERM XPS 300SL3048-007-055152548-007-11.21.1-0110112
    RAVATHERM XPS 300SL4048-007-055153048-007-11.21.1-0110113
    RAVATHERM XPS 300SL5048-007-055154248-007-11.21.1-0110114
    RAVATHERM XPS 300SL6048-007-055155448-007-11.21.1-0110115
    RAVATHERM XPS 300SL8048-007-055156648-007-11.21.1-0110116
    RAVATHERM XPS 300SL10048-007-055157148-007-11.21.1-0110117
    RAVATHERM XPS 300SL12048-007-055158348-007-21.11.1-0110118
    RAVATHERM XPS 300SL14048-007-055159548-007-21.11.1-0110119
    RAVATHERM XPS 300SL15048-007-242632648-007-11.21.1-0110120
    RAVATHERM XPS 300SL16048-007-242633148-007-21.11.1-0110121
    RAVATHERM XPS 300SL18048-007-242634348-007-21.11.1-0110122
    RAVATHERM XPS 300SL20048-007-242635548-007-21.11.1-0110123
    RAVATHERM XPS 300SL22048-007-438477548-007-21.11.1-0110103
    RAVATHERM XPS 300SL24048-007-438478048-007-21.11.1-0110104
    RAVATHERM XPS 300SL26048-007-438479248-007-21.11.1-0110106
    RAVATHERM XPS 300SL28048-007-438480248-007-21.11.1-0110107

Standard text

  • Facade thermal insulation – core insulated wall

    Külső fal Homlokzati fal hő- és/vagy hangszigetelése falazott vagy monolit vasbeton szerkezeten, függőleges felületen, (rögzítés, vakolás, légrés kialakítása külön tételben) maghőszigetelés vagy dilatáció kialakítása extrudált polisztirol hab lemezzel,

    30-80 mm-ig: λD=0,033 W/mK, EN13164 : T3 – CS(10\Y)300 – DS(70,90) – WL(T)0.7 – TR400
    100 mm: λD=0,034 W/mK, EN13164 : T3 – CS(10\Y)300 – DS(70,90) – WL(T)0.7 – TR400
    120 mm : λD=0,034 W/mK, EN13164 : T3 – CS(10\Y)300 – DS(70,90) – WL(T)0.7 – TR200
    140-220 mm-ig: λD=0,035 W/mK, EN13164 : T3 – CS(10\Y)300 – DS(70,90) – WL(T)0.7 – TR200

    A ragasztóanyag, a dübelek, illetve a homlokzatburkolat külön tételben kerülnek kiírásra.