Prevention of cold spots on the attic walls


Cold spots on the walls lead to plaster mycelium. A dangerous phenomenon, to which you should pay close attention are the cold spots in the walls. When there are gaps in the insulating jacket, e.g.. due to running plumbing or sewage pipes, etc., which are not wrapped well enough, in these places the cold penetrates, up to the inner wall of the apartment. This is where water vapor condenses – initially completely invisible. Only black spots of fungi on the wall unpleasantly reveal inadequate insulation. Therefore, it is very important to properly prepare for each stage of the attic adaptation. We suggest that you familiarize yourself with the various materials and methods of making insulation.

Woven fiberglass cover

Mineral wools are made of glass or stone. The most widespread, glass wool, uzyskuje się z piasku kwarcowego, soda and lime, which is stirred at a temperature of about 1000 ° C. Płynna masa wdmuchiwana jest przez cienkie dysze. The resulting fibers weave the cotton wool. This material is often offered with aluminum foil, która stanowi zaporę dla wilgoci. Bare mats need to be additionally secured. Wada: too stiff mat – odstęp dla przewietrzania musi być większy. Parameters: heat transfer coefficient k = 0,30 (layer thickness 14 cm). Price 1 m2 approx 30 PLN.

Lekka pianka z poliestru

The basic material of the Styrotect S sealing system is Styropor. We used it to insulate the attic and show it on the following pages. The starting material is polyester, from which it is made: yoghurt containers, szkła do okularów, inside of refrigerators, etc.. This virtually stiff material is hydrocarbon puffed like this, that it increases its volume by approx. 50 times – Styrofoam in 98% it consists of air. It makes, że jest idealnym materiałem izolacyjnym. Wada: It reduces noise to a limited extent. Parameters: heat transfer coefficient k of the plate in thickness 14 cm is 0,27.

Waste paper as insulation against cold

Isofloc is the name of the material, which in 100% it is made of old newspapers. It is offered in 15 kg bags. Boron salt makes, that it is non-flammable, stable, rigid, and resistant to pests. It can be used as a model for ecological material. Isofloc is blown into the roof structure with a special device. Wnika w najdrobniejsze szczeliny stwarzając w ten sposób doskonałą warstwę izolacyjną. Wada: the handyman can only carry out preparatory work. The rest should be entrusted to a specialist. Parameters: heat transfer coefficient k = 0,27 at 14 cm layer.

Heat transfer coefficient k

The k coefficient determines the so-called. thermal permeability of materials and wall elements. From which the building is built. The formula for this coefficient was calculated at the turn of the century by the Austrian physicist and thermodynamicist Ludwik Boltzmann. The value of the heat transfer coefficient decreases with increasing insulating properties.

■ Rooms are cooled not only due to heat transfer through the walls, but also as a result of ventilation and in places of inadequate insulation. If gusts of wind penetrate the gaps into the house. Even the most perfect insulation material with the lowest k-value will not help .

■ Perfect insulation depends on the highest accuracy in the work. Otherwise, it will not fulfill its task properly.