Thermal bridges

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General information

The parts of buildings with increased heat transmission are simply called thermal bridges. The internal surface temperature of these building parts is significantly below the surrounding surface and ambient temperature.

The most frequent thermal bridges are the socle, ring beams, lintels, radiator enclosures, parapets, reinforced concrete pillars, window sills, etc.

Other information

The absence of proper prevention of thermal bridges can cause significant heat loss. The moistness generated by surface condensation has a contrary effect to the comfort of the room. Low temperature of the inner surfaces occurs high relative humidity. It is often a breeding ground for mould-growth, surface damages and aesthetic problems. Preventing the development of thermal bridges should be taken care of in the design phase.

Thermal insulating by RAVATHERM™ XPS 300 WB may result significant advantages:

  • Reduction of heat loss – energy saving (the transmission heatloss can be reduced with cca. 10%),
  • Avoidance of mould-growth,
  • Prevention of structural problems:
  • surface condensation,
  • aesthetic problems,
  • crack formation,
  • Comfort improvement.

RAVATHERM XPS 300 WB insulation boards are

  • not sensitive to moisture,
  • frost resistant,
  • resistant to mechanical impacts,
  • therefore retain the insulation value and strength during and after the construction period.

Due to the high resistance to water-vapour permeation, no vapour barrier is normally required when the insulation is situated on the internal side. To avoid thermal bridges, the accurate design of the structural details has decisive importance. The insulation value at thermal bridges and socle is recommended to be at least equal to the performance of the adjoining walls, roof or floor slab.

ÉNGY, TERC code

  • Facade thermal insulation – thermal bridge structures
    PRODUCT NAMETHICKNESSÉNGY CODE (MV)TERC CODE
    RAVATHERM XPS 300WB3048-007-055780648-007-21.1.1.4-0110162
    RAVATHERM XPS 300WB4048-007-055781148-007-21.1.1.4-0110163
    RAVATHERM XPS 300WB5048-007-055782348-007-21.1.1.4-0110164
    RAVATHERM XPS 300WB6048-007-055783548-007-21.1.1.4-0110165
    RAVATHERM XPS 300WB8048-007-055784048-007-21.1.1.4-0110166
    RAVATHERM XPS 300WB10048-007-055785248-007-21.1.1.4-0110167
    RAVATHERM XPS 300WB12048-007-242876248-007-21.1.1.4-0110169
    RAVATHERM XPS 300WB14048-007-242877448-007-21.1.1.4-0110170
    RAVATHERM XPS 300WB15048-007-395856548-007-21.1.1.4-0110176
    RAVATHERM XPS 300WB16048-007-395857048-007-21.1.1.4-0110177
    RAVATHERM XPS 300WB18048-007-395858248-007-21.1.1.4-0110178
    RAVATHERM XPS 300WB20048-007-395859448-007-21.1.1.4-0110179
    RAVATHERM XPS 300WB22048-007-438520648-007-21.1.1.4-0110180
  • Thermal insulation of thermal bridges as permanent formwork 48-007-51.1.1
    PRODUCT NAMETHICKNESSÉNGY CODE (MV)TERC CODE
    RAVATHERM XPS 300WB3048-007-057621448-007-51.1.1-0110162
    RAVATHERM XPS 300WB4048-007-057622648-007-51.1.1-0110163
    RAVATHERM XPS 300WB5048-007-057623148-007-51.1.1-0110164
    RAVATHERM XPS 300WB6048-007-057624348-007-51.1.1-0110165
    RAVATHERM XPS 300WB8048-007-057625548-007-51.1.1-0110166
    RAVATHERM XPS 300WB10048-007-057626048-007-51.1.1-0110167
    RAVATHERM XPS 300WB12048-007-243392548-007-51.1.1-0110169
    RAVATHERM XPS 300WB14048-007-243393048-007-51.1.1-0110170
    RAVATHERM XPS 300WB15048-007-396121048-007-51.1.1-0110176
    RAVATHERM XPS 300WB16048-007-396122248-007-51.1.1-0110177
    RAVATHERM XPS 300WB18048-007-396123448-007-51.1.1-0110178
    RAVATHERM XPS 300WB20048-007-396124648-007-51.1.1-0110179
    RAVATHERM XPS 250PB2048-007-057620248-007-51.1.1-0110161

Standard text

  • Facade thermal insulation – thermal bridge structures

    Hőszigetelés elhelyezése homlokzati fal belső oldalán ragasztva, érdesített felületű („nápolyimintás”) RAVATHERM XPS 300WB extrudált polisztirolhab lemezzel,

    30-50 mm-ig: λD=0,033 W/mK, EN13164 : T3 – CS(10\Y)300 – DS(70,90) – WL(T)0.7 – TR400

    A ragasztóanyag, a dübelek, a felületképzéshez szükséges vakolat, valamint a párazáró fólia külön
    tételben kerülnek kiírásra.