maggio

8" rafters at 400mm centres, then a skin of 18mm ply is screwed on to create the deck for standing seam.

Hello, we have also installed a Blachotrapez roof (terrano 525, with double shallow stiffeners) as it was priced very competatively, was simple to install and looks lovely. I installed the panels onto the special condensation drain membrane which also claims to reduce noise (similar to DuPont Tyvek) and I was careful to not tighten any screws, to ensure the slotted holes can allow movement for temperature change. However there is still significant 'ticking' as the surface temperature changes rapidly, for example when the sun goes behind a cloud. The noise is similar to a car engine cooling down. Worse, one of our roofs is aligned with the prevailing wind and the panels can be heard to 'wobble' which I think is due to lift and turbulance as the air passes the gable end. Hardly noticable from outide, but inside the noise is quite dramatic! I wonder if anyone else has similar issues or is this just typical for all standing seam? maybe the 0.5mm blanchotrapez is just too thin to be suitable on a windy site and the use of slotted holes rather than separate clips is a compromise too far? would welcome any thoughts!

Sure it has taken longer than the naive 18 months planned, but it has been a great journey. Hopefully my familly will stay patient for a while yet!

Hello, Thank you for letting me join the forum. We broke ground on our ICF self build near Newmarket in March 22. Currently at first fix, cant believe its taken over 2 years! Hoping to learn lots about ASHP, MVHR etc in the coming months.