Guideline 3 - Insulation Systems / Thermal insulating plaster (TIP)

Thermal insulating plaster (TIP)

Insulation made of man-made materials

Thermal insulating plaster is a plaster with incorporated particles of heat insulation. TIP has 10 times lower thermal conductivity (around 0.07 W/(m K)) compared with traditionally used plaster. Therefore TIP can serve not only as finishing layer or protection layer, but also as heat insulation material. Two types of TIP can be distinguished: plaster with natural binders (lime) and plasters with cement of artificial binders. TIP is made by incorporating light weight aggregates: clay, cork, expanded polystyrene, expanded glass, etc. It can improve both thermal and acoustic properties of the building. TIP is pre-mixed and ready to use on-site.

Thermal insulating plasters have specific compositions and additives that provide insulating properties. In accordance with EN 998-1, there are two categories of thermal insulating mortars, T1 (≤ 0.1 W/(m K)) and T2 (≤ 0.2 W/(m K)), related to their thermal conductivity.

Through the thermal plaster it is possible to follow the irregularities of the internal walls, and keep typical bends between walls and ceiling, while other internal insulation systems, with their effect of "regular inner box”, are not authorized in listed buildings by the authorities on cultural heritage.

Moreover TIP has a high water vapour diffusion coefficient therefore can be used for walls that are affected by capillary rising damp.

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