lay block flat or vertical to take wall plate

[diy1]

Im building a two storey extension
I have got to the point where i need to lay the final blocks to take the wall plate, should the hemelite block be laid flat or can I cut approx to the desired size approx 13cm high and lay it normally as you would lay a block vertically

 

[freddiemercurystwin]

Vertically is adequate, you also will be able to extend the wall insulation up to meet the loft or roof insulation that way.

 

[diy1]

thanks wish I had discovered this site before starting my extension
I was thinking of closing the cavity wall of with slates and laying the final external wall half a block on top of this the inner wall would have approx 1.5 block and the wall plate would sit on this

 

[freddiemercurystwin]

Is your insulation full fill? If it is then no need to bother with any other means of closing the cavity.

 

[diy1]

yes full fill dritherm 85mm, cavity is appox 85-90m
if I did close the caviy can I do it with slate

 

[freddiemercurystwin]

Err, your cavity is closed by the dritherm already .....

 

[diy1]

I have dritherm 85mm insulation full fill, I haven't closed the cavity at the top as yet was considering doing this to stop anything going down the cavity

 

[noseall]

I have dritherm 85mm insulation full fill, I haven't closed the cavity at the top as yet was considering doing this to stop anything going down the cavity

Err, your cavity is closed by the dritherm already .....

 

[diy1]

I understand what your saying regarding the cavity being closed with the dritherm but read somewhere about closing the cavity with something solid so to stop fire coming up the cavity

 

[freddiemercurystwin]

dritherm is































wait for it

































fire resistant!

 

[Wynberg]

I have been reading about this there seems to be a difference of opinions about this but I glad to hear the if the cavity is fully filled with dritherm then it meets the regs.

Cheers