House in Miroslava - Façade insulation with wood fiber thermosystem

This episode on the road to house of Miroslava is dedicated to insulation and exterior finishing. The healthy lifestyle of Constantin Budeanu, the owner of the house, is also reflected in the choice of materials for the facade. Wood fiber products were used for both insulation and exterior cladding of the brick walls. Silicate primer was used to finish, directly on the board to ensure moisture resistance, followed by the application of spackling and decorative paint. Both are from Gutex and are specialty products for finishing wood fiber boards.

Brick wall cladding

For the cladding of the exterior walls of the house, well-dried wooden frames and Holzwurmfrei® treatment against tooth decay, a material based on natural silicon salts. Gutex Thermoflex wood fiber insulation Thermoflex from Gutex was inserted in the spaces created between the uprights, which are 60 cm apart. The system was closed with ISOPLAAT Windbarrier rigid boards, fastened to the wooden frames with nickel-plated screws.

You will also see in the video, when insulating the facade, Florin Voșloban (Naturalpaint) insists on a few rules to follow when installing rigid boards. First of all, do not join the boards at the corners of windows or doors. The distance from these corners must be at least 20 cm. Another rule is to leave an expansion gap between the boards, a 2-3 mm gap that allows them to expand when absorbing moisture from the finishing coats. Lack of space will result in stresses when moisture is absorbed which will lead to cracking of the primer and facade paint.

On the facade there will be areas clad with stone, which despite its weight of 60 kg/m², will be supported by the wood fiber board. Where there will be no stone, Gutex decorative paint will be applied and mineral paint as a final coat.

Insulation materials

The two layers - the mattresses and the rigid wood fiber boards - provide thermal and sound insulation.

GUTEX Thermoflex is a fiber-woven insulation used in the structure. Flexible wood fiber mattresses are easily installed between rafters, on ceilings, and on wood or metal support structures mounted on interior or exterior walls of the home. They adapt easily to different spaces and offer protection against extreme temperatures in both summer and winter. The mattresses are open to diffusion and vapor permeable, helping to regulate indoor humidity. In addition to thermal insulation, Gutex Thermoflex also provides very good sound insulation.

ISOPLAAT Windbarrier are porous, compact, moisture-resistant, porous fiber-woven insulation boards that also provide wind protection. The thermal conductivity of the panels is 0.049 W/mK and they significantly improve the wall temperature. The boards also contribute to sound insulation by preventing external noise penetration and attenuating noise and echoes generated indoors. The boards are used as wind protection, insulation and reinforcement elements in the construction of external walls, ceilings and roofs or as support elements for thermal insulation layers.

All the products used for the interior and exterior finishing and insulation of the house in Miroslava are in the Naturalpaint portfolio.

Exterior facade finishing video

Florin Voșloban, our technical guide in the Miroslava house, now talks to us about exterior finishing. If you want to know the recommendations for the correct installation of insulation on the facade of the house watch the video below, Florin has some "tips" for you again!