Yes, but as you may well know, a subservient extension (step back and lower ridge) is often an actual planning policy, so it's a waste of time...
Depends on the house builder
Yes. No need for all that nonsense in the soffit and doing jack.
Yes they could do.
Or more traditionally, just take the wall insulation up to meet the roof insulation.
You should have at least 40 years to go though, so make the most of them. (y)
Outside the house.
A step back and lower ridge is normal planning policy and a requirement the planners insist on.
Not building to the approved planning...
Would it be easier to dig on the outside?
Your span looks like 3700mm.
What's going on with those pointless insulated soffits? o_O
What you need to do is just brush and loose dust off and then dampen the wall and the coping.
Then lay the mortar - not flat but it needs to be...
I can't understand why you would need permission to do this conversion in the first place. It's not a change of use in planning terms.
Not building to the boundary is policy intended to prevent terracing. If there are no adjacent buildings, then the policy would not apply. Check...
On a positive note, you don't need to empty the loft when they replace all the roof tiles. (y)
On a separate issue, your eaves felt is rotten,...
These wont work in the type of wall you have.
Deal with the cause of the damp.
You need to 1/2 bond them as much as you can, but if not, then change every third course so that the same bond does not continue up the wall.
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