Planning the build
Why build an extension?
Initial design sketches
On-line Building Regs
Meeting planners
 Meeting building control
 Planning the foundations
 Planning the floor slab
 Marking out the footings
 Damp proof course issues
 Possible drainage problems?

 Construction of the walls
 Proposed roof structure
Windows diary
 Window challenges
 Initial window plans
 Making the casements
 Making the frame
 Designing leaded lights
 Making leaded lights
 Assembling the window
 The little window

 The door frame
Demolition diary
 The demolition starts!
 The demolition continues
 Still more demolition

Foundations diary
 Foundation issues
 Drain issues
 Digging the foundations
 Rethinking foundations!
 Pouring the foundations

Floor slab diary
 Rethinking the slab!
 Floor vent extensions
 Preparing the slab #1
 Preparing the slab #2
 Pouring the slab

Walls diary
 Preparing to build walls
 Build up to the DPC
 Build the walls #1
 Build the walls #2
 The gas men cometh
 Build the walls #3
 Finishing the walls
Roof diary
 Roof structure build
 Tiling the roof
 Finishing the roof
 Finishing the gables
 Roof insulation

 Floor screed
 Shower room
 Shower room floors
 Shower room walls
 Utility room
 Utility room walls
 Utility room floor
 Finishing the windows

Project finished!
 Final inspection
 The certificate
 Final thoughts

 Twelve months on!
 Material costs
Sister sites
 House re-roof project
 Home gas usage data

 Stop paint flaking
 DIY secondary glazing


Installing in the roof insulation

Sunday, 10th June: Here are the five sheets of Celotex (Kingspan) 90mm roof insulation ready to install.



I was going to have a lazy day today, however I just jumped into installing the roof insulation.

Mind you, I wish I hadn't!

Hindsight is a marvellous thing! Maybe I should have installed the insulation from the outside before I tiled. I could have just laid the sheets of insulation across the joists. The I could have marked the distance between the joists onto the insulation quite easily.

Doing it from the inside  has proved to be quite difficult. The insulation has no 'give' at all in it so the insulation has to be precisely cut or just will not fit.

This is very difficult to do, so I ended up up resorting to using a sharp carving knife to trim the insulation as I fitted each piece. Not easy! The result is not as neat as I would like but as it will not be seen I'm won't lose too much sleep worrying about it.

When you saw the insulation it creates a large volume of dust that gets absolutely everywhere. This does not make the job camera friendly, so I did not take too many photos. My camera is already playing up because of dust getting into the zoom mechanism - I hope it survives the project!

I completed half the roof this afternoon so I should be able to complete the job tomorrow.

Monday, 11the June: I completed the installation of the roof insulation today. Plus, lots of trips to the tip to start getting rid of the mounds of rubble!

I've booked a visit from the Building regulations Surveyor for Wednesday.

Wednesday, 13th June: Building Control visit Stage 8 - roof insulation: The Building Control Surveyor came today and was happy with all the work. The only thing I need to add is an additional layer of 50mm insulation that covers the existing insulation and roof joists.

Thursday, 14th June: I installed the 50mm insulation as requested - it was a bit easier than installing the 90mm insulation between the joists.

It certainly should be warm in the winter! I can progress to screeding the floor now that the roof is finished.

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