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Default Hairline crack

What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)
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On Saturday, 13 April 2019 09:35:27 UTC+1, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


filler & a finger. Do not rake it out, that always makes it worse, wastes time & achieves nothing.


NT
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DerbyBorn Wrote in message:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


Rake it out if you like, to allow filler to get down to the
bottom of the crack & adhere to each side & the base.

Filler "daubed on" with a finger tends to just rest on the
surface, doesn't adhere to the sides & falls out in short
order.

Ultimately what caused it to crack will crack it again unless
addressed.
--
Jim K


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In article ,
Jim K.. wrote:
DerbyBorn Wrote in message:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


Rake it out if you like, to allow filler to get down to the
bottom of the crack & adhere to each side & the base.


Filler "daubed on" with a finger tends to just rest on the
surface, doesn't adhere to the sides & falls out in short
order.


Ultimately what caused it to crack will crack it again unless
addressed.


I've got an old ceiling with cracks between the plasterboard. Was
originally lath and plaster, and could be the joist deflection is greater
than a modern plaster skim allows. Filled them last time with a decent
decorator's caulk, which is flexible. But also shrinks as it dries, so
took several goes to get it level. That has been successful.

--
*I got a job at a bakery because I kneaded dough.*

Dave Plowman London SW
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Default Hairline crack

On Saturday, 13 April 2019 09:35:27 UTC+1, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


Probably a joint with no scrim.
If so, it will come back whatever you do.
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Default Hairline crack

On 13/04/2019 09:35, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


The last professional seeing to an issue like this widened the crack and
filled with flexible caulk to take up any movement.

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Default Hairline crack

On 13/04/2019 09:35, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


I paint over with PVA a couple of times to bond the crack, then, if it's
beyond what paint will fill, a smear of fine filler.

--
Email does not work


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Default Hairline crack

On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim
of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


I paint over with PVA a couple of times to bond the crack, then, if it's
beyond what paint will fill, a smear of fine filler.





I've found mixing 'polyfilla' (the powder stuff) with a mix of water and
some PVA, I guess the mix, works well- provided it isn't too wet when
applied. It is hard to sand down, so don't leave too proud.
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On Saturday, 13 April 2019 11:46:24 UTC+1, Brian Reay wrote:
On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:


What is the easiest way to seal with a hairline crack in the overskim
of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


I paint over with PVA a couple of times to bond the crack, then, if it's
beyond what paint will fill, a smear of fine filler.


I've found mixing 'polyfilla' (the powder stuff) with a mix of water and
some PVA, I guess the mix, works well- provided it isn't too wet when
applied. It is hard to sand down, so don't leave too proud.


Don't leave it proud at all would be more sensible
Plasterboard is prone to move a bit, reappearance later is fairly likely. You won't prevent that.


NT
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Default Hairline crack

In article ,
wrote:
On Saturday, 13 April 2019 11:46:24 UTC+1, Brian Reay wrote:
On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:


What is the easiest way to seal with a hairline crack in the
overskim of a plasterbaord covered wall.

Do I need to rake it out or can I apply something that will
penetrate and fill it (Creeping Crack Cure?)

I paint over with PVA a couple of times to bond the crack, then, if
it's beyond what paint will fill, a smear of fine filler.


I've found mixing 'polyfilla' (the powder stuff) with a mix of water
and some PVA, I guess the mix, works well- provided it isn't too wet
when applied. It is hard to sand down, so don't leave too proud.


Don't leave it proud at all would be more sensible Plasterboard is
prone to move a bit, reappearance later is fairly likely. You won't
prevent that.


This is the problem, hence needing a flexible filler. That also grips well
to the board.

--
*The first rule of holes: If you are in one, stop digging!

Dave Plowman London SW
To e-mail, change noise into sound.
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Default Hairline crack

Dave Plowman (News) wrote:
In article ,
wrote:
On Saturday, 13 April 2019 11:46:24 UTC+1, Brian Reay wrote:
On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:


What is the easiest way to seal with a hairline crack in the
overskim of a plasterbaord covered wall.

Do I need to rake it out or can I apply something that will
penetrate and fill it (Creeping Crack Cure?)

I paint over with PVA a couple of times to bond the crack, then, if
it's beyond what paint will fill, a smear of fine filler.

I've found mixing 'polyfilla' (the powder stuff) with a mix of water
and some PVA, I guess the mix, works well- provided it isn't too wet
when applied. It is hard to sand down, so don't leave too proud.


Don't leave it proud at all would be more sensible Plasterboard is
prone to move a bit, reappearance later is fairly likely. You won't
prevent that.


This is the problem, hence needing a flexible filler. That also grips well
to the board.


Assuming it flexes, true, but then Id expect more cracks.

A bit of silicone sealer is good for small cracks if you need it to flex.



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On Sunday, 14 April 2019 11:27:49 UTC+1, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:
On Saturday, 13 April 2019 11:46:24 UTC+1, Brian Reay wrote:
On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:


What is the easiest way to seal with a hairline crack in the
overskim of a plasterbaord covered wall.

Do I need to rake it out or can I apply something that will
penetrate and fill it (Creeping Crack Cure?)

I paint over with PVA a couple of times to bond the crack, then, if
it's beyond what paint will fill, a smear of fine filler.

I've found mixing 'polyfilla' (the powder stuff) with a mix of water
and some PVA, I guess the mix, works well- provided it isn't too wet
when applied. It is hard to sand down, so don't leave too proud.


Don't leave it proud at all would be more sensible Plasterboard is
prone to move a bit, reappearance later is fairly likely. You won't
prevent that.


This is the problem, hence needing a flexible filler. That also grips well
to the board.


Flexible filler won't solve it, the percentage of movement in a hairline crack is too large. Filling it at painting time is trivial.


NT
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Brian Reay Wrote in message:
On 13/04/2019 11:32, Tim Watts wrote:
On 13/04/2019 09:35, DerbyBorn wrote:
What is the easiest way to seal with a hairline crack in the overskim
of a
plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate and
fill it (Creeping Crack Cure?)


I paint over with PVA a couple of times to bond the crack, then, if it's
beyond what paint will fill, a smear of fine filler.





I've found mixing 'polyfilla' (the powder stuff) with a mix of water and
some PVA, I guess the mix, works well- provided it isn't too wet when
applied. It is hard to sand down, so don't leave too proud.


Indeed as some fillers shrink when setting/drying, leaving it
proud to sand a little is a sensible move.
--
Jim K


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Default Hairline crack

On Sat, 13 Apr 2019 08:35:25 GMT, DerbyBorn wrote:

What is the easiest way to seal with a hairline crack in the overskim of
a plasterbaord covered wall.

Do I need to rake it out or can I apply something that will penetrate
and fill it (Creeping Crack Cure?)


Captain Tollys Creeping Crack Cure is really for sealing "cracks"
that are no more than break in non absorbant materials that still
have capillary action.

Personally I follow the line of the crack with the point of a trowel,
making the crack wider and a few mm deep. Mix up some ordinary powder
filler, fairly stiff, spray the raked out crack with water to reduce
the suction, apply filler to crack with a flexible spatula filling
knife/blade, making sure the crack is fully filled. Leave very
slightly proud, layer of filler on surrounding plaster translucent
thin but not critical if there are some thicker lines from the edge
of the knife. Wait 10 mins, until the filler is partially set, wet
the flexible filling knife and smooth the the lot leaving just a
residue around. Leave to dry fully wipe of residue with damp cloth.

If the crack was caused by known movement that can't be sorted out
rather than just a random crack I'd be tempted to use decorators
caulk. Normally reserve that for timber/wall gaps, though more
recently have used powder filler as above and again fairly stiff for
that and it's not cracked,
yet...

--
Cheers
Dave.



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