UdiIN RECO *NEW* with 15 year guarantee


Wood-fibre interior insulation system with integrated levelling compensation


Interested in our long-term analysis? Click on the picture. Or call us on +49 (0) 371 815640

The UdiIN RECO SYSTEM is based on the UdiRECO principle with an automatic levelling compensation for uneven surfaces. The interior insulation system is the alternative to vapour-proof solutions on the inside of exterior walls. It enables the problem-free installation of interior insulation for the retrofit of existing buildings. The external appearance of the building and the type of wall construction are unimportant. Regardless of whether the walls are slim, half-timbered structures, double-skin brickwork or heavy natural stone, this system is suitable for all types. Contrary to foam or mineral-fibre insulation boards, the accumulated condensation is absorbed by the UdiIN RECO SYSTEM and, thanks to its quick-drying properties, is then transported into the room air or through the capillary effect to the outside of the building. Due to its excellent price/performance ratio, the system is great value. It is affixed dry, without loam/clay or adhesives, using special screw fixings and coated with our special UdiMULTIGRUND vapour-retarding, mineral coating.

NEW: In cooperation with the Technical University, Dresden and the German Environment Foundation, our interior insulation system has been thoroughly tested. The complete study is contained in a SPECIAL BROCHURE which we will be happy to send you in printed form. Call us on: +49 (0) 371 8156 40.


UdiRECO is also used as an external facade insulation.


Please click on the pictures


  • Adjustable up to +/- 20 mm
  • Automatic levelling compensation
  • For uneven internal walls
  • Available 80 to 200 mm insulation thicknesses
  • A tight surface fit
  • No additional moisture loading as a mortar bed or filler layer is not required
  • No need for complicated substructures/mounting structures
  • Can be screwed and adjusted without any fuss
  • No moist areas due to the system’s open-diffusion and active-capillary properties
  • Quick drying
  • Universally applicable on both thick and thin walls
  • Resonance-free sound proofing
  • Water vapour regulating with the application of our mineral vapour retarder
  • No need for insulation wedges or corner insulation boards
  • The surface of the mineral vapour retarder serves as a base layer for plasters and paints
  • Patent protected

Benefits of this interior, wall insulation

  1. The specially developed mineral, water vapour regulating, render UdiMULTIGRUND ensures that there is no build up of condensation

  2. The insulation system automatically compensates for uneven surfaces of up to +/- 20 mm - that means a total of 40 mm without using any mortar or adhesive.
  3. The Lambda value has been optimised to a level of 0.041 W/ mK (the smaller the Lambda value the more efficient the insulation) and is the front-runner among interior insulation systems.
  4. Through the intelligent synthesis of a heavy and a light wood-fibre layer, with their high condensation absorption capacities and quick-drying properties, there is no mould growth or accumulation of additional moisture.
  5. The intelligent layered construction of the UdiIN RECO SYSTEM, with different layer densities, provides excellent sound proofing properties without resonance effects.

At last there is an insulation system that keeps working, keeps breathing and that remains vapour-permeable ensuring a healthy room climate. The system is also suitable for the insulation of small or partial areas.

Please contact us for a comprehensive analysis or structural and calculational proof.

Technical Data


According to DIN V 4108 - 10:

as per DIN EN 13171: T4-CS(10\Y)70-TR7.5-WS 1,0


Coniferous wood
Max. 0.5 % Paraffin
1.5 % PVAc (For bonding the insulation layers)
< 6 % Binding fibres in the sandwich construction                                                   

Technical Data

Thermal conductivity declared value                         

Vapour diffusion resistance µ

Apparent density    

Building materials class DIN 4102-1

Euro class DIN EN 13501-1                                                                                                             

0.041 W/mK (in combination)


ca. 50/ 250 m³




Format 1,300 x 790 mm
Tongue and groove around the whole circumference

Insulation thicknesses:
80, 100, 120, 140, 160, 180 and 200 mm


A special coating for all UNGER-DIFFUTHERM interior insulation systems. It is an effective vapour retarder to restrict the level of condensation and serves as a filler, a reinforcement coat and a base coat for renders/plasters, paint coats wallpaper etc


ca. 0.4 mm

Compressive strength

ca. 4 - 9 N/ mm2


ca. 125

Reinforcement layer thickness An average of 4 mm (depending upon the required vapour retardation value)

Installation advice

By exerting a direct influence on the moisture level, the capillary-active insulation system UdiIN RECO inhibits problems with moisture which may lead to building damage. With this system, a simple and effective solution has been developed which meets the requirements for energy saving and contributes to a healthy room climate. It can be used for any application from thin, half-timbered wall constructions to thick castle walls.



This interior insulation system does away with the need for a vapour barrier! The system can be installed regardless of wind speeds.



Step 1.

The insulation boards are installed directly to the existing substrate with 30 cm off-set joints and fixed with our adjustable screw fixings. Regardless of whether the substrate is raw masonry or old plaster, once adjusted the system automatically compensates for voids or lumps to provide a level surface. Neither mounting adhesives nor mounting constructions are necessary. Pre-bore the fixing holes and screw in the fixings.



Step 2.

After the system has been adjusted, a coat of our special UdiMULTIGRUND vapour-retarding, mineral coating is applied, into which a reinforcement mesh is bedded in. This provides the basis for a permanently dry, crack-free, smooth and ready-to-paint surface. It also serves as a limited vapour retarder. Coverage: 6.5 kg/ m².



Step 3.

The finishing touch

Now the final step is to apply the top coat using a material of your choice. It doesn’t matter which one you choose: Loam/clay plaster, loam/clay paint, mineral-based fine plaster in a wide range of attractive colours.

Brochure for processing here soon

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