Plasterboard line

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Sparky70
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Plasterboard line

Post by Sparky70 » Sun May 27, 2018 8:30 am

Hi, I need some advice on what I can do to remove this plasterboard line prior to painting ?Image


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wes56
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Re: Plasterboard line

Post by wes56 » Sun May 27, 2018 10:34 am

the two tones of paint show up the line.
it looks like where the boards met at a join but the join was not taped or there was a small difference in the two surfaces.
could it be that the lower wall is solid plaster on brick and the upper wall is a stud partition?
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Re: Plasterboard line

Post by ayjay » Sun May 27, 2018 10:55 am

Is it flat (i.e. all in the same plane) if you hold a straightedge vertically across the line?
One day it will all be firewood.
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Re: Plasterboard line

Post by Sparky70 » Sun May 27, 2018 10:58 am

wes56 wrote:the two tones of paint show up the line.
it looks like where the boards met at a join but the join was not taped or there was a small difference in the two surfaces.
could it be that the lower wall is solid plaster on brick and the upper wall is a stud partition?
It’s all plasterboard dot and dab.


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Re: Plasterboard line

Post by Sparky70 » Sun May 27, 2018 11:00 am

ayjay wrote:Is it flat (i.e. all in the same plane) if you hold a straightedge vertically across the line?
It’s not flat.


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Re: Plasterboard line

Post by steviejoiner74 » Sun May 27, 2018 11:45 am

This is a poor way of installing plasterboard in houses and it’s always going to crack as it’s joined along a timber that had a certain degree of movement and it’s also been done in one big joint.
Plasterboard should be staggered in a stair opening and joined well below or above the floor line of the first floor.
Dig out the filler,scrim joint and plaster or easifill.
This will always crack tho I’m afraid.
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Re: Plasterboard line

Post by OchAye » Sun May 27, 2018 11:50 am

Sparky70 wrote:
ayjay wrote:Is it flat (i.e. all in the same plane) if you hold a straightedge vertically across the line?
It’s not flat.
Yuk then. One option would be to do some heavy sanding to lose some of the joint. In the process the plasterboard my get damaged a bit ... then tape and quality filler over it[*]. What I mean is to lose the step but little you can do about the angle. Paint it with a matt paint so it reflects the light less (it seems to be matt anyway) and if you are worried about scuffs etc. then use a cleanable/scrubbable matt (acrylic) paint which has a bit more seen than matt.

--
[*] Toupret makes an ultra fine scrim tape which is supposed to be placed over a joint and be covered with just paint instead of filler. I found I still had to use filler over it but you will need much less filling than using a standard plasterboard jointing tape. Sorry http://www.toupret.co.uk website is down I can't check details.
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Re: Plasterboard line

Post by ayjay » Sun May 27, 2018 12:22 pm

Sparky70 wrote:
ayjay wrote:Is it flat (i.e. all in the same plane) if you hold a straightedge vertically across the line?
It’s not flat.
That's always going to be a problem as the light is hitting it differently and showing it up.

It would only ever be a partial success, but removing about 600mm above and below the existing joint and replacing with fresh p/b in one piece (i.e. moving the joint) might be the best option.

Edit: I thought I'd posted this a half hour ago (had to stop and hoist wife onto commode - real fun!)....but I may as well stick it up as it's already written.
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Re: Plasterboard line

Post by Job and Knock » Sun May 27, 2018 7:30 pm

There is another approach, possibly. Make-up a wide skirting board with mouldings on both top and bottom edges and apply that to the wall over the joint. I've seen that done in old buildings to disguise a transition from plaster on brick to lath and plaster on studs, but I'm not sure how good it would look
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Re: Plasterboard line

Post by steviejoiner74 » Sun May 27, 2018 10:04 pm

Job and Knock wrote:There is another approach, possibly. Make-up a wide skirting board with mouldings on both top and bottom edges and apply that to the wall over the joint. I've seen that done in old buildings to disguise a transition from plaster on brick to lath and plaster on studs, but I'm not sure how good it would look
It’s still done in timber frame houses(large expensive ones anyway) where high class finishings throughout a home are used. A hardwood bead/plate is incorporated to cover the movement joint and can look ok if done correctly.
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Re: Plasterboard line

Post by Job and Knock » Sun May 27, 2018 10:18 pm

Now that is a surprise!
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Re: Plasterboard line

Post by Sparky70 » Mon May 28, 2018 7:07 am

Ok, thank you for your replies, I will try to sand it first and repair, if thats not good enough will get it re- boarded and skimmed.
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