Hight of walls for lintel

[Gavin123]

Hi guys currently self building single storey extension,all great so far blockwork up cavity 100mm,minor issue I need to gain 100mm in height for ig lintel

Concrete block external toplight internal

Best options

100mm coursing blocks all the way around ?

Or a cheaper way of cutting a few blocks around area etc... Iv seen a L shape cut from concrete block,hopefully makes sence,but unsure on that option.

Thanks

Hopefully someone can point me in the right direction.

 

[oldbutnotdead]

Your 100mm course will throw you out at eaves height- if you're rendering the blocks then yeah get the disc cutter out and make some odd shaped blocks. Does the top of the lintel come out on gauge- if not make sure you're not trying to mess on with 20mm slivers of block, either miles out or spot on.

 

[Gavin123]

All to be rendered, the opening is 3.9 metres and current wall height are all in line matching height etc,would the cutting the funny l shapes with disc cutter pass building regs,this would be the heavy duty ig would be sitting..

Thanks

 

[Gavin123]

Oh, it's a flat roof extension if that helps all rendered..

 

[noseall]

Hopefully someone can point me in the right direction.

Shaped2

• noseall
• 12 Jan 2019

Ordinarily you would keep in courses - outside and in. As it's a single story just do what is strongest but easiest.

 

[Gavin123]

Definitely seen that photo before,that's exactly what I was trying to refer to,only one heavy duty going in above bi-fold doors (IG),i could simply cut the two L shapes to corners and fill above lintel with Cuts above lintel to bring all in line.This would give me a 100mm for lintel to sit on with 150 overhang...would this definitely meet building control???

Thanks again guys,once this is all over would love to start contributing to help others..

 

[oldbutnotdead]

Its the cuts above that'll attract attention- long as they are decent size (50 mm plus) it'll be fine. 150 bearing is the minimum, long as you make that it'll be ok

 

[Gavin123]

Fantastic,sitting on 100m cut L blocks,should give me around 115mm above lintel.

Thanks the help lads,much appreciated.

just thought I would mention building control have been great so far,first time dealing with them,I have changed all clay sewages pipes under ground re-routed pipes for island sink,laid slab etc...very easy going have just told me to crack on with walls and roof structure untill next visit..