Hi all, I have been researching plaster and plasterboard wall filler for a number of cracks in my house, some ranging from hairline to wider cracks (around 3 to 6mm, due to settlement after renovating an old house). The web is a wash with different types, all with a mix of reviews. So, I have decided to ask the professionals, hence this new thread. Can any of you recommend a filler that I can rely on to work, and that will not simply sag or cause the cracks to re-appear. Thanks in advance.
Good Quality Reliable Crack Filler
- Thread starter beejco
- Start date
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- filler plaster board
If the crack is less than 1mm and there isn't much bounce, I often brush in neat wood glue (PVA) and then fill and sand.
Wider and deeper cracks- dilute PVA to seal the edge of the plaster and then gun in some Toupret Fibacryl.
https://www.toupret.co.uk/business-customers/products/specialist-solutions/fibacryl-FIBACP01G.html
It is like a caulk but has tiny fibres added to reinforce it. Like a caulk it shrinks back. I wait a day or two for it to shrink back before filling over it.
With regards to fillers. Hairline cracks I fill with Toupret RedLite (or Red Devil OneTime) and then lightly sand with 150 grit paper. It is a semi flexible lightweight filler. Unlike powdered fillers the dust doesn't cling to everything. It is about £9 for a 1L tub. It is quite soft though and so isn't suitable for high traffic areas.
Deeper/wider cracks- I normally use regular Toupret powder filler or their TX110 if I need faster drying times.
As per Swwils' video, I too use expanding foam. On my current job, I used expanding foam to "lock" the stairwell stud walls where they meet the brick/plaster party wall. The customer had extensive cracks where the walls meet at the corners. After chiselling away the loose plaster, I could see a 6mm gap between the timber studs and old plaster and noticed a slight bounce when I pushed the wall. The foam locked it and I back filled with Toupret powdered filler.
If I am in a mega rush and don't want to wait for filler to dry, I use two pack filler. A 3L tub of Upol Easy 1 is about £25.
https://www.u-pol.com/uk/en-uk/prod...r/easy-1-lightweight-body-filler-deep-repairs
Wider and deeper cracks- dilute PVA to seal the edge of the plaster and then gun in some Toupret Fibacryl.
https://www.toupret.co.uk/business-customers/products/specialist-solutions/fibacryl-FIBACP01G.html
It is like a caulk but has tiny fibres added to reinforce it. Like a caulk it shrinks back. I wait a day or two for it to shrink back before filling over it.
With regards to fillers. Hairline cracks I fill with Toupret RedLite (or Red Devil OneTime) and then lightly sand with 150 grit paper. It is a semi flexible lightweight filler. Unlike powdered fillers the dust doesn't cling to everything. It is about £9 for a 1L tub. It is quite soft though and so isn't suitable for high traffic areas.
Deeper/wider cracks- I normally use regular Toupret powder filler or their TX110 if I need faster drying times.
As per Swwils' video, I too use expanding foam. On my current job, I used expanding foam to "lock" the stairwell stud walls where they meet the brick/plaster party wall. The customer had extensive cracks where the walls meet at the corners. After chiselling away the loose plaster, I could see a 6mm gap between the timber studs and old plaster and noticed a slight bounce when I pushed the wall. The foam locked it and I back filled with Toupret powdered filler.
If I am in a mega rush and don't want to wait for filler to dry, I use two pack filler. A 3L tub of Upol Easy 1 is about £25.
https://www.u-pol.com/uk/en-uk/prod...r/easy-1-lightweight-body-filler-deep-repairs
You're welcome. That is the beauty of sites like this. I offer advice when I can, and ask others for advice when I am uncertain.