Sticking plasterboard to plastic and metal
Discussion
What do you guys recommend using to stick plasterboard to my internal window reveals? I’ve got the foam insulation inserts down the sides and metal lintal on top, and I can’t plaster directly to these so need to stick platerboard to them before the plasterer starts
Thought about using foam but it would expand and mess it up won’t it?
Thought about using foam but it would expand and mess it up won’t it?
Bad, bad advice!
Put some small-ish screws in to the plastic cavity closers, leave approx 1/2" sticking out to act as something for the foam to grab hold of.
Use gun grade expanding foam, Screwfix's no nonsense stuff is pretty much bang on for this, it cure's very quickly and doesn't go crazy when expanding.
Do the head first and then the sides, the sides will hold up the head although you may need a sprag in the middle.
You can then fire a couple of screws in to the plasterboard on the sides to get the plastic just to hold everything nice until the foam sets, which should be about 30 minutes.
Remember use GUN GRADE FOAM you have loads more control than the nozzle on a can stuff.
Please don't use gripfill/pinkgrip or anything such like, it won't work.
Put some small-ish screws in to the plastic cavity closers, leave approx 1/2" sticking out to act as something for the foam to grab hold of.
Use gun grade expanding foam, Screwfix's no nonsense stuff is pretty much bang on for this, it cure's very quickly and doesn't go crazy when expanding.
Do the head first and then the sides, the sides will hold up the head although you may need a sprag in the middle.
You can then fire a couple of screws in to the plasterboard on the sides to get the plastic just to hold everything nice until the foam sets, which should be about 30 minutes.
Remember use GUN GRADE FOAM you have loads more control than the nozzle on a can stuff.
Please don't use gripfill/pinkgrip or anything such like, it won't work.
Toolstation do one specifically for plasterboard
https://www.toolstation.com/shop/p99304?searchstr=...
https://www.toolstation.com/shop/p99304?searchstr=...
Gtom said:
Bad, bad advice!
Put some small-ish screws in to the plastic cavity closers, leave approx 1/2" sticking out to act as something for the foam to grab hold of.
Use gun grade expanding foam, Screwfix's no nonsense stuff is pretty much bang on for this, it cure's very quickly and doesn't go crazy when expanding.
Do the head first and then the sides, the sides will hold up the head although you may need a sprag in the middle.
You can then fire a couple of screws in to the plasterboard on the sides to get the plastic just to hold everything nice until the foam sets, which should be about 30 minutes.
Remember use GUN GRADE FOAM you have loads more control than the nozzle on a can stuff.
Please don't use gripfill/pinkgrip or anything such like, it won't work.
What do you mean by doing the head first and a sprag (do you mean spray) in the middle? I’m a diyer! Lol Put some small-ish screws in to the plastic cavity closers, leave approx 1/2" sticking out to act as something for the foam to grab hold of.
Use gun grade expanding foam, Screwfix's no nonsense stuff is pretty much bang on for this, it cure's very quickly and doesn't go crazy when expanding.
Do the head first and then the sides, the sides will hold up the head although you may need a sprag in the middle.
You can then fire a couple of screws in to the plasterboard on the sides to get the plastic just to hold everything nice until the foam sets, which should be about 30 minutes.
Remember use GUN GRADE FOAM you have loads more control than the nozzle on a can stuff.
Please don't use gripfill/pinkgrip or anything such like, it won't work.
Half inch is still quite far out? And will screwing into the plastic after sticking it on move it about a lot??
What about the lintel? Will it hold onto metal whilst upside down?
1/2" is the generally accepted thickness of the gap between the wall and the back of the plasterboard when sticking plasterboards.
Putting Blue grit will work fine before hand but at £20+ tub for 10L it's a bit of an overkill for one window reveal. Likewise using board adhesive really, a 25kg bag is about the same as the above mentioned foam but you will use about a tenth of a bag and it's a messy affair mixing it and cleaning up afterwards.
If I'm boarding a full room out I will use board adhesive because I have it. If I'm just doing a reveal I will use foam because it's quicker, cheaper, less messy and far less hassle which is what I'm sure you are after.
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