Replacing Cills for ewi

[User___removed]

I have looked back through previous threads but wanted to know peoples thoughts on getting over the problem of fitting ewi to a property with concrete Cills.
I am looking for a solution that will be coat effective whilst still in keeping with the original Cills?
Cheers

 

[Dansouthcoast84]

What is your original cills mate.

Pvc if people wont pay for weminco extend cills.
Silicone 9mm capping board over top with poly pins and endcaps. Done right looks good.

But beware of the drip vents at bottom of window. If you are above them. Pack the new cill up a couple mm to allow the drip to still work

 

[User___removed]

Cast concrete Cills dan 1920's house.its the only hiccup on this job.

 

[Dansouthcoast84]

Just render them? Or 25mm eps ?some if no room for insulate i rub the basecoat up like cement finish and paint if client doesnt want it textured

 

[User___removed]

Just render them? Or 25mm eps ?some if no room for insulate i rub the basecoat up like cement finish and paint if client doesnt want it textured

So dab a piece of insulation on the face of the cill then pin back through.
Base coat with mesh then rub up as a finish?

 

[Dansouthcoast84]

So dab a piece of insulation on the face of the cill then pin back through.
Base coat with mesh then rub up as a finish?

Yes mate

 

[Rigsby]

Polystyrene cills stone coated. Stick them on over the old. Costs more than the method below though.

 

[themucky1]

pvc over cill is pretty cheap or use some verge trim as undercill that way you wont have to touch the original cill at all

 

[fred20]

cut concrete cills flush with stihl saw ,board then pvc over cill

 

[user__removed]

pvc over cill is pretty cheap or use some verge trim as undercill that way you wont have to touch the original cill at all

That looks crap mate and is typical energy company standards, the only way for me is to replicate the cill with insulation.

 

[MartyMcfly]

cut concrete cills flush with stihl saw ,board then pvc over cill

Looks like badly packed fanny.
Also some EWI companys wont guarantee the work if its not a powered coated metal sill