Is there a difference between plastic and plastic

[JonasHolm]

Hello!

I'm going to buy plastic/construction film for the vapor barrier, and I'm now wondering if there's any difference between various brands.

I'm primarily looking for two or three characteristics.

I obviously want the vapor barrier function to work, which I don't think is a problem, but it must be age-resistant and, if possible, not let through radon gas.

Is there anyone here who knows if there's any difference regarding these properties between different brands of plastic?

/Jonas

 

[ByggPutte]

Just ask for Åldersbeständig byggfolie at the building market, and you'll get the right one.
Whether it stops radon gas, I do not know.

Best regards, Putte

 

[JonasHolm]

Yes, it's the radon gas that's the issue...

Isn't it common to lay regular construction plastic under crawl spaces to prevent radon from seeping into the house, or is there a special type of plastic?

/Jonas

 

[snuttjulle]

Isn't the radon you're afraid of transported in the air? If that's the case, all plastics that stop air/moisture should also stop radon.

Edit. just noticed that you even wrote radon gas and then this should be self-evident.

 

[JonasHolm]

Yes, it's airborne radon that is dangerous.

Yes, it should be that regular age-resistant construction foil stops radon gas.

/Jonas

 

[MathiasS]

It is regular (age-resistant) plastic that stops the radon, nothing unusual there. The difficult part is to make it airtight.

Regarding the differences between, for example, Byggmax plastic and other plastics, at least I haven't experienced any differences. I believe I have used three different products, but all meet the same Swedish standard as far as I can recall.

 

[JonasHolm]

Sounds good

Then it's a trip to K-Rauta today...

/Jonas

 

[Tossegubbe]

Just make sure to get an age-resistant one, I've seen a variant that is a bit thinner and not UV-blocked (age-resistant).