Membrane for my mansard roof. The main selection criteria for the beginner.

Waterproofing membrane, windscreen, superdiffuzionnaya membrane .... How not to get lost among all these concepts???

Building with their own hands, by definition, it implies savings on everything that is possible (in my view). I myself am no exception, and saving on labor, do not want to pay for construction materials.

But when you come from the ground up to the stage of construction of the roof, I realized that it is not necessary to save on some things, even if it is very necessary.

Waterproofing of the roof - this is the case.

Especially it concerns a mansard roof, which initially it is not the most ideal solution (why then I made that choice, read this article).

❗ In this apparatus system, there is nothing secondary, Every detail should be paid attention to, and the materials must be the best.

A material for waterproofing - especially.

By studying the examples of work, error analysis, and expert advice, I realized that there is nothing no need to invent (as I like 😁), and to do so as necessary.

✅ Superdiffuzionnaya membrane - this is what you need to remember every person who dreams of the attic.

And most importantly, that it is characterized by - a waterproofing on the one hand, and high vapor permeability with another. It is high!!! No films, roofing, etc ...

For your roof I have chosen here such material.

Manufacturer: JUTA a.s., Czech Republic.

Specifically, the membrane, I have chosen, climb on the Internet, studying reviews on the use of different materials. You can find other manufacturers, the main thing - it's features:

• Density - 115 g / m² (tolerance + 10 / -10 g / m²)
• waterproof - not less than 1000 mmAq.
• water vapor permeability- not less than 1200 g / m² / day.
• UV-stability - 4 months.
• application temperature - from -60 ° C to + 80 ° C?.

But from what you need to make a start. But the main criteria for me were:

🔹Paropronitsaemost.

This figure is very important for the mansard roof. The ability to "film" skip moisture from the insulation, is the guarantee of durability of the entire roofing cake.

And the larger the figure, the faster random humidity Bodo to leave the heater. And its dryness - it is warm and therefore, life.

🔹UF-stability.

It is the ability of the film, maintain their properties when exposed to sunlight.

it was a surprise for me... I will never know and not to think, if I had not started to study this question in detail. It turns out if the membrane is permanently leave without basic roofing, then under the influence of ultraviolet radiation, it can lose its properties.

I'm sure many allow such a mistake, and then blame the manufacturer, the poor quality of the material. And they themselves are not even aware about the real causes.

✅ So that the stability of 4 months from the sunFor me - this is ideal, given that I do everything myself, and time stretched work.

🔹I not even expect to save ...

Here, the phrase "cheap, can not be a good" fit as ever.

Two rolls of the membrane, I have spent nearly 10,000 rubles (although this is not the limit). Of course I've seen, and other materials is much cheaper, and of course the performance slightly worse. But I even thought there was no saving this.

And how this membrane will show itself in the case, as always, will show only my personal experience (I hope a positive).

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