Recent content by sgg123

Yes, I appreciate its not ideal - but I feel a little limited in what can be done. I don't want extra construction outside the existing stud wall, which is what would be required if 'continued' the existing ducting to new vent locations. The two first floor bedrooms open to a landing (see...

Hi stem, thank you for your detailed reply. The box idea looks great, but the constraint for me is that an internal door will open over that location in both rooms. Over the last couple of weeks I went ahead and chatted to a ducting fabricator who suggested a cap for the duct that incorporates...

Hi all, I have partitioned a room that had an existing warm air vent, and the new room doorway has meant removing that vent. I now want to 'T' off the existing ducting so that I can a T joint coming up within the new stud partition for 2 vents, 1 serving each room. I would have liked to have...

Hi all, I am about to board out a cold roofed room. I have 75mm PIR between the rafters and another 75mm layer of PIR under the rafters. Will the additional layer of PIR on the warm side be sufficient for vapour control - or do I need to still attach a VCL film? If it's the latter, what is the...

Got the following back from Velux, which is helpful:

Hello all, Feeling rather pleased with myself that I've installed my first roof window. I need to get the trimmers in, and want to allow for a horizontal and vertical reveal and the top and bottom of the window. My question is that the insulation collar leaves some quite chunky foam internally...

That's great, thank you. So the top and bottom installation battens can essentially 'float' over the removed middle rafter as long as the frame brackets are screwed into the outside rafters at A, B, C and D in the pic below?

Hi all, Despite all the waffle below, in summary my question is: Do the top and bottom roof battens, to which the velux frame brackets on to, need to attach to a rafter in the middle or will they offer adequate support by just being attached at either end on the long side rafters? This...

One other question that popped into my head on all this. I've included a couple of photos of where I am at with this so far. You will see the horizontal trimmers installed that I will now move in light of this discussion. In terms of the rafters you will see from the white line I have added to...

I guess because the whole window exits the frame hence it's more sensitive to intolerance in square/level?

Pardon my ignorance one this, but can you tell me why?

Thanks to all of you for your advice on this. It's unfortunate that I will need to go back and trim some rafters to allow the trimmers to sit further out from the window - but I understand that this will make it a better job. Time to get to work!

Great advice, thank you!

I've planned for the top edge of the bottom installation batten to be 80mm from the top of the next course of tiles - which should allow for the EDW flashing kit.

Yes, they need to be top hung and no more than 1100mm from floor for means of escape