This week, we resumed our work of inserting glass wool insulation into the roof rafters for the next main sections of the upstairs roof rafters, namely the “D” and “E” section.
But, before we put up the black vapour barrier plastic sheeting, we went into the Alcove portion in the corner of the roof, where we have a small gable wall extending up from the Side Door and Porch. This is the F section and a tiny sloping piece, the G section, coming back to the levels of the main rafters. We had already inserted the hard PU foam boards into these three areas and they needed to be covered up with a protective OSB sheets next. For the vertical gable part, which also had an air ventilation port, ready for the fume cupboard for our workroom. We cut triangular pieces using 18mm thick OSB boards and managed to slide them into place, but only after we had to slice them into smaller pieces!
We then did the same for the two sloping sides, but using the thinner 11mm OSB boards instead. these pieces were fairly complex, especially the left hand side (the “G” section) because the pieces needed to come all the way out to the front of the rafters so that it protects the vapour barrier plastic. But we made it! Finally, we cut and shaped several more pieces of the 11mm OSB, to fit and cover the “shelf” that ran along at the floorboard level, at the back of the Alcove.
We now could proceed by filling the last few rafters and the aforementioned shelf with more glass wool and then covered everything up in lots of the DPM plastic, our two main roof sections, “D” and “E”, all the surfaces in the Alcove, the “F” and “G” sections 
Glasswool in D & E
But, before we put up the black vapour barrier plastic sheeting, we went into the Alcove portion in the corner of the roof, where we have a small gable wall extending up from the Side Door and Porch. This is the F section and a tiny sloping piece, the G section, coming back to the levels of the main rafters. We had already inserted the hard PU foam boards into these three areas and they needed to be covered up with a protective OSB sheets next. For the vertical gable part, which also had an air ventilation port, ready for the fume cupboard for our workroom. We cut triangular pieces using 18mm thick OSB boards and managed to slide them into place, but only after we had to slice them into smaller pieces!
We then did the same for the two sloping sides, but using the thinner 11mm OSB boards instead. these pieces were fairly complex, especially the left hand side (the “G” section) because the pieces needed to come all the way out to the front of the rafters so that it protects the vapour barrier plastic. But we made it! Finally, we cut and shaped several more pieces of the 11mm OSB, to fit and cover the “shelf” that ran along at the floorboard level, at the back of the Alcove.
We now could proceed by filling the last few rafters and the aforementioned shelf with more glass wool and then covered everything up in lots of the DPM plastic, our two main roof sections, “D” and “E”, all the surfaces in the Alcove, the “F” and “G” sections
Plastic on D & E
Then covered all that lot up with more 11mm OSB boards, including all the ready-made pieces we previously created.
We now have completed this rather complicated corner of the roof and we can carry on in filling the rest of the rafters with a little bit more ease. We go back and finish off the “C” section, the large gable wall above the Entertainment and Front door wall.
We now have completed this rather complicated corner of the roof and we can carry on in filling the rest of the rafters with a little bit more ease. We go back and finish off the “C” section, the large gable wall above the Entertainment and Front door wall.
D & E Covered in OSB
Side Porch area completed