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ISOTEC
Prevention of thermal bridging

1 .3

www.plakabeton.com

ISOTEC Prevention is better than cure
©
x (g/kg)

17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

100% 90%

ISOTEC is areinforcement system designed to reduce thermal bridges which can occur at the interface of cantilevered structural elements such as balconies, cornices and canopies.
Relative humidity of airMoisture content of air

80% 70%

B C

A
60% 50% 40% 30% 20% 10%

What are thermal bridges? The humidity contained in the air inside a building condenses at the point where the outside coldstructure (i.e. balconies, cantilevers …) meets the inside warm structure. This condensation causes moisture and mould to appear. Although this damage can be treated, the cause always remains. ISOTECreinforcing should be foreseen from the design stage. ISOTEC is placed at the interface between the two structural components to allow the insulation to run continuously over each cantilever. The mainadvantage of the ISOTEC system resides in its insulating panel of polyurethane or mineral wool, through which stainless steel bars are placed and cast in to the concrete structure on both sides of theinterface.

-10 -6

-2

2 6 10 Temp (°C) Temp (°c)

14

18 22

2

ISOTEC Composition
For most of the cantilevered elements, the upper part of the reinforcement is composed of a row of longtraction bars while the lower part consists of a row of short bars with compression plates. The diagonal bars hold the shear force.

5

7 9 J

2

4 6 8 1 3 J

ISO TEC STOC K
TYPE : ACT14/L

1 2 3 4 5 6 7 8 9

Standard : 40 mm polyurethane On request : 60 or 80 mm polyurethane / mineral wool Traction bars Compression bars with compression plates Diagonal bars Length of tractionbars = 2 x overlapping length (function of bar diameter) + insulation thickness.

For certain types of cantilever we can design ISOTEC elements either for shear force only or for negative shear force...
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