Fiberglass strip no longer approved

[MathiasS]

Hello, are fiberglass strips no longer approved for use in plasterboard joints during plastering and what is used instead?

How have you done it? Has it cracked for you and what solution did you use?

Of course, you can do whatever you want when building for yourself, as it is not regulated by law (like electrical installation work) and neither does an insurance company have an opinion on it since it concerns the surface of a wall or ceiling.

However, if you are building for others, you must follow industry regulations for your work to be considered professional, and then there is YBG to read. All manufacturers of plasterboard point to this, i.e., it is 100% clear which strip should be used and why.

https://www.gyproc.se/sites/gypsum.nordic.master/files/gyproc-site/BroschyrerSE/YBG-Nr7.pdf

 

[AndersS]

Is it possible to have painted or is wallpaper better? How do you others do with the summer cottage? A lot of thoughts

We run winter heating in the holiday home at 10-12 degrees and have chosen wallpaper even where the walls are white. Everything is plasterboard and filled with paper strips.
We have no drywall seams that align with the window/door frame sides, as this is where the risk of cracks is greatest. Built in the '70s and extended/renovated in stages, everything is properly framed/built on a concrete slab, so no simplest possible summer cottage frame on plinth.
No cracks for us.

 

[AG A]

I have now called both Gyproc and Norgips. No one knew why they recommended paper tape. Norgips manufactures its own paper tape and naturally wants to sell it. Gyproc eventually referred to a study they followed. It showed that the fiberglass tape is 25% stronger in the horizontal and vertical directions. However, the paper tape is sufficiently strong and more dimensionally stable. If the vertical and horizontal directions are x and y, then the paper tape is significantly stronger in the z-direction. The fiberglass tape, therefore, becomes a worse alternative to place in the middle of the compound, as is done with paper tape. The fiberglass tape works when it is in contact with the gypsum at all points, which is the intended method of installation. Thus, they refer to a study where the fiberglass tape was used incorrectly.

 

[useless]

The biggest difference is that the fiberglass strip does not resist shearing.

 

[MathiasS]

It is clear that Gyproc and Norgips know why they recommend paper tape, as it is stated in the documentation they provide on their website.

It seems that those in customer service may have forgotten that fiberglass was even an option since it has been many years since it was discontinued.

 

[TheGame]

Fiberglass is still available for purchase in all stores including paint shops, so it's not something that has been discontinued at such places.

 

[useless]

They can be bought, but no one uses them.

 

[TheGame]

They can be bought, but no one uses them.

Yes, I used it a week ago. Worked perfectly on the wall

 

[Gabbe1]

I exclusively used fiberglass tape when I plastered two bedrooms in my vacation home last year. The reason I didn't choose paper tape is that I've never worked with it before, and since I've never encountered cracking problems even once on any project, I see no reason to use anything else. All the drywall panels are mounted on 12mm wall particle boards with staggered joints. The temperature varies between 10 and 25 degrees, and so far, there have been no cracks anywhere.

Now, I'm not saying that fiberglass, through this anecdotal evidence, is better or as good as paper tape. I'm just saying that it is obviously good enough in all the projects I've completed.

 

[MagHam]

Have plenty of fiberglass joints. Not a single hairline crack anywhere.

My hypothesis is that the recommendations are based on the board having better shear strength, and that it is advantageous particularly when houses are built quickly and without much consideration for moisture or temperature.