PAROC stone wool – reliable and effective insulation for exterior walls!

12 of July '23

PAROC stone wool - reliable and effective insulation for exterior walls!

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From the series "Facade and wall materials—trends 2023"

A unique combination of favorable properties that guarantees thermal and acoustic comfort, a healthy interior microclimate and lower heating bills. Quality behind which stands more than 80 years of experience in the production of insulation. Discover proven PAROC solutions for insulating different types of exterior walls, both new and retrofitted!

PAROC general building slabs

The core of PAROC's building insulation portfolio is flexible general building slabs made of non-combustible stone wool(fire reaction class A1), which can be successfully used for thermal, acoustic and fire insulation of both external walls and other building elements. Due to their high resilience, PAROC building-wide slabs are particularly well suited for filling walls in frame houses, ventilated facades and log walls.

PAROC building-wall panels do not settle, crack or lose their thermal insulation properties over time. In turn, the optimal density of the products does not allow air convection inside them, so their thermal resistance remains constant even during very cold winters and hot summer months. Depending on the planned thermal insulation standards and the thickness of the walls, you can choose 3 slabs with an appropriately adjusted thermal conductivity coefficient:

PAROC Solid: _λD = 0.037 W/mK
PAROCUltra: _λD = 0.035 W/mK
PAROCUltra plus: _λD = 0.034 W/mK

PAROC Solid / Ultra / Ultra plus

PAROC Linio—insulation for rendered facades

In the context of insulating external walls with the classic light-wet method (ETICS), PAROC offers two main types of products: classic stone wool facade slabs with a disrupted fiber structure, and lamella slabs in which the fibers are arranged in an orderly manner, perpendicular to the insulated surface.

In the former case, PAROC Linio 10 and PAROC Linio Pro panels, which are noncombustible (A1), form the base of the insulation system and are particularly suitable for facades with uneven surfaces or wooden supporting wall structures. Thanks to the high flexibility of the products, we can easily achieve a smooth base surface for plastering mortar—also in the case of renovation of older facades.

When insulating walls using the light-wet method, it is worth paying attention to certain sensitive zones. Since the edges of the building are more exposed to wind than flat surfaces, at the stage of preparing the substrate you can chisel away the plastering on the external reveals of windows and doors, in order to place there an insulating material with higher mechanical parameters. For this purpose, PAROC Linio 15 panels with increased compressive strength (30 kPa at 10% deformation) and tensile strength perpendicular to the surface (15 kPa) are ideal.

PAROC Linio10: _λD = 0.036 W/mK
PAROC LinioPro: _λD = 0.034 W/mK
PAROC Linio15: _λD = 0.037 W/mK

PAROC Linio 10/15

In PAROC's range of rendered facade insulation, you can also find non-combustible lamella wool in the form of PAROC Linio 80 slabs. This is an optimal choice for curved surfaces—especially when planning thicker insulation to avoid the use of mechanical fasteners that can create thermal bridges.

PAROC Linio80: _λD = 0.040 W/mK

PAROC Linio 80

PAROC WAS—insulation for ventilated facades

The key to the proper functioning and trouble-free operation of ventilated facades is an effective, fireproof and moisture-resistant insulation layer. With this in mind, the PAROC WAS product series was developed—noncombustible stone wool slabs for thermal, fire and wind insulation in new and renovated exterior walls. Their added value is their optimally matched air and water vapor permeability characteristics.

PAROC WAS slabs also combine excellent mechanical, fire (A1), moisture and low thermal conductivity parameters. Such a set of features makes it easy to meet U-value requirements with their help, as well as effectively eliminate the formation of thermal bridges. Insulation systems using PAROC WAS panels can be adapted to different types of construction and facade materials.

Frame walls

When insulating wooden structures, we need to take into account not only thermal parameters, but due to the nature of the raw material—also fire and moisture properties. In this case, PAROC WAS 25 board, which can be successfully used in single-layer and double-layer systems, where the surface of the insulation board is in contact with the ventilation gap under the external facade, will work perfectly. The solution is covered on one side with a fiberglass veil in neutral (PAROC WAS 25t) or black (PAROC WAS25tb) color, which protects against fiber pulling and effectively affects the drainage of moisture from the wooden framing members.

PAROC WAS25 / 25t / 25tb: _λD = 0.033 W/mK

PAROC WAS 25 / 35 / 50

Massive walls

Although solid sandwich walls made of various types of bricks, concrete, blocks or stone are a less sensitive building material than wood, they too should not forget to properly protect the facade. When it is necessary to use a single-layer insulation system, PAROC WAS 35 and PAROC WAS 50 panels are up to the task. In both cases, the double-layer system creates tight thermal insulation, thus ensuring optimal ventilation levels. Both slabs are available with fiberglass covering in neutral or black.

PAROC WAS 35 / 35t / 35tb: _λD = 0.033 W/mK

PAROC WAS 25t / 35t / 50t (gray covering).

PAROC WAS50 / 50t / 50tb: _λD = 0.034 W/mK

PAROC WAS 25tb / 35tb / 50tb (black covering)

PAROC Cortex—wind protection insulation

The primary function of PAROC stone wool products is the thermal insulation of structures and building envelopes. When dealing with ventilated facades, however, effective wind protection is equally important. In both roles, depending on the layering, non-combustible (A2-s1,d0) PAROC Cortex series wind protection panels perform well.

Covering the slabs with an integrated waterproof windproof coating, on the one hand, provides a high degree of protection against changing weather conditions, and on the other, thanks to optimal water vapor permeability, allows moisture to evaporate quickly and safely from the interior of the structure. The unique combination effectively eliminates the risk of leaks and moisture in the building envelope.

The series includes two main solutions: windproof PAROC Cortex panels for use in a double-layer insulation system, in which they work together with the main thermal insulation layer (e.g., with PAROC Solid building-wall panels), and a special variant, PAROC Cortex One panels, which act independently as both a thermal and wind barrier. Both products are available in a white or black coating variant, which makes it easy to match the right solution to the facade finish (such as glass).