Loft Insulation

[AttM]

I have found the following in my loft.

1 x 1" layer of polystyrene balls
1 x 1" white glass fibre insulation
1 x 4" yellow insulation

I want to board the loft space, but the layers of insulation come over the joists by about 2".
What would be the best way of boarding ?

1. Compress the whole lot under the boards
2. Remove the yellow insulation
3. Remove everything EXCEPT the yellow insulation

All replies gratefully received (I want to start this weekend!!)

 

[breezer]

i personally woul leave the thickest layer there , as i believe compresssing it would defeat the object

 

[AttM]

Thats the way I was thinking, but which will offer the best insulation, polystyrene + white glass fibre (2") or yellow insulation (4"). I think I can guess the answer but I dont want to cos removing that polystyrene is going to be a bi**h.

 

[breezer]

how about a vacuum cleaner and suck it out

 

[AttM]

'er indoors wont be too happy with the thought of her vacuum going "up there" !!