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Although I have never heard the term noggins before, and I don't know what a vis screen is, I can say with certainty that condensationCondensation does cause problems. You absolutely must allow air to flow under a steel roof. I think the most common mistake that I have seen with additions on the side of the house is the lack of a vent where the roof meets the wall. And in this case, maybe a 1" space where the polysytrene/plastic meets (or actually shouldn't meet) the wall.

Also, I would avoid using plaster board (aka drywall) in areas without climate control. It simply will not last.

enter image description here

Although I have never heard the term noggins before, and I don't know what a vis screen is, I can say with certainty that condensation does cause problems. You absolutely must allow air to flow under a steel roof. I think the most common mistake that I have seen with additions on the side of the house is the lack of a vent where the roof meets the wall. And in this case, maybe a 1" space where the polysytrene/plastic meets (or actually shouldn't meet) the wall.

Also, I would avoid using plaster board (aka drywall) in areas without climate control. It simply will not last.

enter image description here

Condensation does cause problems. You absolutely must allow air to flow under a steel roof. I think the most common mistake that I have seen with additions on the side of the house is the lack of a vent where the roof meets the wall. And in this case, maybe a 1" space where the polysytrene/plastic meets (or actually shouldn't meet) the wall.

Also, I would avoid using plaster board (aka drywall) in areas without climate control. It simply will not last.

enter image description here

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source | link

Although I have never heard the term noggins before, and I don't know what a vis screen is, I can say with certainty that condensation does cause problems. You absolutely must allow air to flow under a steel roof. I think the most common mistake that I have seen with additions on the side of the house is the lack of a vent where the roof meets the wall. And in this case, maybe a 1" space where the polysytrene/plastic meets (or actually shouldn't meet) the wall.

Also, I would avoid using plaster board (aka drywall) in areas without climate control. It simply will not last.

enter image description here