Catnic Head and polystyrene. How would you fix?

[taylorhouse]

Hi
Have this head 1.4m span to board and all the polystyrene is on show, so not a lot to bond too. Also no surprise its out of level by over 10mm.
Need to bond 2mm at 1 end and 12mm at the other.
Was wondering what the consensus on how you would bond.

1. Board Adhesive and dont worry about the window / polystyrene edge.
2. Grab Adhesive - Any preference on type. Grill Fill, Pink Grip, Mega Grip etc.

Cheers

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[Arti]

Give it a greezing with Dab over the whole lintel then Dab it on like normal

 

[scottie5]

Looks like theres plenty to dab a board on while keeping a decent margin to me.But if its as tight as you say stick it with 6mm glassroc.

 

[malc]

use dry wall adhesive, stick the reveals first, leaving a gap for the head board to slide in and be supported by the reveals. you will have to cut a baton to support the head until the adhesive sets.

 

[TonyM]

Solvent based Gripfill will melt the polystyrene, but there is plenty of metal there to stick to. Use Dib & dob adhesive.

 

[Jbeesy718]

Cut your reveals so they are level at the top cut n stick the head prop in middle n then stick the reveals on to hold the edges plenty of metal on that head.

 

[Garethharrison80]

Like has been said, grease over wth dab, make sure all ur reveals are same width, plenty of dabs on then level + make sure margin same width all around window