Why do we need Scotias? I am wondering if it has something to do with movement. I am thinking of covering my horrible pinex board ceiling with gib and it would be so much easier to leave existing Scotia and butt up to it. This has prompted the enquiry but interested in a general reply.
trade4us2,
Jan 29, 3:21pm
Wooden framed houses tend to expand and contract and move a tiny bit in high winds or if the ground underneath sinks at all. Gib stoppers don't recommend stopping around a ceiling as it's bound to crack there. So scotia is put up to cover the join. Your gib is likely to end up with a crack around it. However my house is so old that nobody would notice!
hammer23,
Jan 29, 4:24pm
Mary,you are moving into dangerous territory when you try to question using scotia. All us builders were bought up on it to cover up our stuff ups. Hell next you will want ban quarter round. This women needs a good talking to.
zak410,
Jan 29, 4:35pm
'Square stop' is often used instead of scotia in many modern houses. It is done with paper tape the same way as internal corners.
You can also keep your existing scotia when re-gibing your ceiling, but instead of butting up to it you can leave a gap all around the room and use a negative detail bead (also called shadow-line) to butt to the scotia. just looks like a more intricate scotia when painted.
Square stop is great if using the same colour for ceiling and walls, but obviously need 'cutting-in' for different colours.
stevo2,
Jan 29, 8:15pm
Dont cover your Pinex with gib. The screws WILL pop and the joints WILL crack. Gib needs to be glued and screwed to the battens or framing.
trade4us2,
Jan 30, 4:18pm
The Pinex ceilings I've seen sag because they don't have enough ceiling joists above. My plaster ceiling sagged, so I put a new 200x50 beam across the middle and extra joists and jacked the ceiling up to them. The Gib could be screwed through to the joists (which really should be 400mm apart).
stevo2,
Jan 30, 5:15pm
Gib needs to be GLUED to the battens or joists. Cant glue to pinex. If the substrate is not solid ie. timber or metal, the gib WILL move and pop the gib compound on all of the screws heads and the joints will often crack as well. Have seen it a few times in my 40 years of building. When Pinex became unpopular many people gibbed straight over it to save time and the terrible mess if they had loose insulation (insulfluff) Its like putting a sheet of foam rubber between the gib and framing and not expecting movement!
ksam,
Jan 30, 8:22pm
Quarter round always made kitchen installs easy
gabbysnana,
Jan 30, 10:10pm
rubbish.
stevo2,
Jan 30, 10:36pm
Ok, Have it your way. I am a builder with 40 years of building some rather nice homes. I am fully qualified, a Licensed Building Practitioner and I attend regular seminars held by suppliers such as Winstones (Gib) to further my knowledge. Then a Nana comes along and throws a comment like that, Its no wonder that many of the knowledgeable posters on here are disappearing. Another good reason to separate Gardening from DIY on this message board. Any builder that throws gib over Pinex is just plain ROUGH and they are the sort of Cowboys our trade doesnt need. But I guess as long as there are people that want a cheap job, thats what youll get. Will you be offering some compensation to the OP when their expensive ceiling fails because they followed your advice?
johotech,
Jan 30, 10:43pm
Obviously we aren't getting paid enough for the professional advice that many people provide on here.
stevo2,
Jan 30, 10:44pm
True that.
marywea,
Aug 8, 2:34pm
Many thanks to you all for taking the time to comment-very helpful. It is quite enough that some think it is a bad idea for me not to gib over pinex-it is not ugly enough to take the risk. I had never heard of square stop-interesting method. Lovely Hammer, once the bathroom is revamped I promise to "go back to my knitting!".
Since the public registrations are closed, you must have an invite from a current member to be able to register and post in this thread.
Have an account? Login here.