Suspect bungalow construction

little_monty

Just a couple of questions relating to 1998 bungalow I've recently bought
(It passed Engineers survey and I will get getting builders to have a look into renovation work shortly)

Q1. There is an extension to rear of bungalow whose apex roof is graded into (sits on) main apex roof (roofs are running perpendicular to each other).
From the main attic there is no indication that the extension is there.
Is it usual that an extension roof which meets existing roof wouldn't 'break through' the existing roof ? Would this be considered 'good practice' ?

Q2. I'm not certain there is a 'screed floor'. I can see evidence of the DPC inside the house under both the internal walls and internal leaf of external walls (I expected walls and DPC to be build on foundation slab with the screed layer being added later) (the plumbing is underfloor though !) Is there any 'easy way' to tell is the screed layer exists ? Does this construction sound unusual ?

Strolling Bones

little_monty wrote: »

Is it usual that an extension roof which meets existing roof wouldn't 'break through' the existing roof ? Would this be considered 'good practice' ?

No - one would expect to build onto the existing roof.

little_monty wrote: »

Q2. I'm not certain there is a 'screed floor'. I can see evidence of the DPC inside the house under both the internal walls and internal leaf of external walls (I expected walls and DPC to be build on foundation slab with the screed layer being added later) (the plumbing is underfloor though !) Is there any 'easy way' to tell is the screed layer exists ? Does this construction sound unusual ?

Can't follow any of that - sorry

little_monty

thanks for the reply strolling bones ..

Just to clarify the 2nd question.

I can see all the internal walls are built on top of the finished floor. Instead I would expect walls would be built on the slab with the final 'screed' floor poured later.

Strolling Bones

That would suggest that there is no screed alright.
Common enough not to have a screed but rather a powerfloated floorslab.
And also to build non loadbaring internal walls off the slab.

sydthebeat

Strolling Bones wrote: »

That would suggest that there is no screed alright.
Common enough not to have a screed but rather a powerfloated floorslab.
And also to build non loadbaring internal walls off the slab.

agreed, very common for that age of a house.

its actually a good construction method to pour a slab right through. powerfloat it all, and then build internal walls over.
even if they are load bearing or non load bearing, they should all have a foundation and rising walls under the slab.

mykillokneel

That roof construction is most common unless it's dormer or storey and half. The valley of new extension sits on the rafters of original roof, as long as rafters of bungalow supports it its fine. Probably the reason you can't see in is the old felt was left on the bungalow when building other roof although the valley blade should be nailed to original rafters and not just battens! If you cut small hole in old felt where the extension is you should
see it
Would agree about building walls on slab, load bearing walls would be down to foundation anyway but not an expert on that area