cracks in gypsum joints

[pekivan]

I have installed a new drywall ceiling. I've applied joint tape at the seams and plastered over it. After painting twice, the paint cracked along all the seams.

I'm using regular ceiling paint. I think the plaster absorbed the water from the paint, which caused it to crack. I tried painting again but it cracked again. Then I applied latex caulk to the seams but it still cracked.

Now I'm considering applying joint tape again and plastering over it... or is there another solution??

 

[Fasting65]

Do you have studs behind all the joints? It sounds a bit strange that it keeps cracking. What type of tape are you using - paper or fiberglass? What type of joint compound?

 

[pekivan]

I have a rule at every joint and use fiberglass tape... I don't know exactly what filler it is, but in the store, he recommended fine filler. (that's what I'm using) Can I apply a new tape and fill again?

 

[Fasting65]

In general, fiberglass tape is NOT recommended in wooden house constructions. It doesn't absorb movements as well as paper tape and can therefore crack more easily. This recommendation is supported by the Painters' Union. I don't think you will solve the problems by adding another tape. It will probably just look ugly and bulky. My two cents are on trying to remove your fiberglass tape on a joint and applying a paper tape - just to see how it behaves. The paper tape can be applied with filler (= difficult if you don't have a special joint filler that is really wet) or you can use fabric glue. Wait to apply filler over the tape until it has dried, so you have a better chance of getting a good result.

Also read here:
http://www.gyproc.se/gyproc/content.nsf/documents/BD9AB78E07423569C1256DF2004637BF?OpenDocument&m=mm

http://www.norgips.se/index0,31.htm

http://alcro.resolutmrm.com/Pro_Alcro2/InfoPop.asp?MediaID=3286

last but not least. Read other threads from the forum about paper tape:
http://www.google.com/search?q=pappersremsa+site%3A.byggahus.se&rls=com.microsoft:sv:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7

 

[pekivan]

okay I guess I will follow your advice...does it matter that I live in an apartment and have drilled the brackets directly into the concrete ceiling?

 

[Fasting65]

Hmm... I'm unsure when fiberglass strips are okay to use at all... According to the gyproc link, fiberglass is never okay. As I said... try a joint and evaluate the result.

 

[esox71]

What is the C/C distance between the studs and how wide are the boards?

 

[pekivan]

I have cc35 In width and length, the boards are of varying sizes... 13mm thick

 

[sandhall]

Have paper strips everywhere in the house except one place (ceiling to wall transition where ceiling height changes). Thought that paper strips would build too much there, so I used fiberglass. Not a single seam in the house has cracked, EXCEPT where I used fiberglass strips. The conclusion I draw: Fiberglass strips are cr..p. Avoid them.

 

[smidifix]

When you are plastering walls and you have chipboard behind and gypsum on it.

Do you still need to tape?

Best regards, Linus

 

[B6304S1]

Thanks for the engaging response Fasting 65 -

Regards, Kim

 

[jon_h]

Do you still need to strip??

Yes, absolutely.

 

[pekivan]

Thank you for all the answers... have put new fiberglass strips on the seams where it cracked... so far it hasn't cracked...

 

[johanj]

I have exactly the same problem with cracks in a new drywall ceiling. I have framed it according to standard and used fiberglass tape at the seams. First, I filled with coarse filler and then with fine filler. The ceiling was put up in the summer and now the cracks are starting to appear. The house is a site-built house that was erected a year ago. The heating is not on all the time. Now I have the chance to fix the ceiling without major inconvenience before the floor is laid. I'm not keen on just putting new fiberglass tape where the cracks are visible now, as there is a high risk that new cracks will appear in other places. What do you think about applying a fabric over the entire ceiling and then painting again? What type of fabric should I choose?

/Johan

 

[Stringfellow Hawke]

If you're going to make smooth plaster ceilings, microlit is the only right choice.