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Can I make a few small holes for light fittings in the vapour barrier ?

Hi, I want to keep the roof height to a minimum and thus planned to install a cold roof rather than a warm roof. Because this requires venting, which can be problematic, the inspector suggested an 'inverted warm deck' / hybrid. The cold roof plan was to put in 100mm of insulation between...

Thanks for the above, appreciated. There is no details other than what the OP. I wil try to find a SE today.

Hi Notch7, I agree on the two options, either a cranked steel or steel post between ridge and patio doors. I'm favouring cranked steel option. I've updated image, is this what you mean by a crank steel (in red) - The Orange line indicates a thinner steel section to preserve sight lines. The...

The architect designed the entire extension which is almost built, including the flat roof section. Unfortunately, not much detail was provided for the gable. I know, its not good though I have asked for the detail I think the architect cannot deliver :(

Yes a vaulted ceiling. The plans have a 75mm x 225mm ridge beam. (I've added plan drawing to my post, though it lacks the details)

I’m having a single storey extension built and have query about the structure required for a gable window. There are two glazed areas, triangular piece of glass for gable and doors below. I would like to keep the horizontal bar between the top glazed section and the doors to a minimum height for...

@tony1851 - Hi Tony, just wondering if you could help me out on the above query and if the 2No 6x2 is adequate. I dont know the load but the tiled section area is 2700 x 1740

@noseall Do you think the 2No 6x2 provides adequate support or should the size be changed (its a 2.7m span)?

The flat roof is supported by several timbers at 450 centres running parallel to the 2No 2 x 6. So there shouldn't be much weight from the flat roof?

Do you mean like this new image (it still has offset though)

Any chance of an image to help ?

The span between the existing wall and the new extension is 3m to outer wall (2no 6 x 2) . Its a cold roof (want to maintain minimum height due to neighbouring property) 2no 6 x 2 is this not adequate?

Hi, I'm constructing a roof for a single storey extension. The roof is composed of two parts, one gable (vaulted ceiling) and one flat roof. I've attached image. I'm under the understanding that usually rafters from an inclined section are connected by a birdsmouth, but internally this will...

Hi, I'm trying to work out the length of steels needed from the plan (attached). This is dictated by the amount of bearing required. The steel in question is highlighted in yellow. Not sure why the SE put in 215 x 215 x 140 padstone on the right and a smaller padstone on the left. I will put in...

I like those pics - Great job :) I noticed in your picture, that you used the same timber as the joists for the end panel. Is it required to build up the walls between the rungs to the same height of the OSB board ? (Just thinking from an insulation point of view)

Do you mean something like this ? (found image of a pitched roof) - Is it required for a flat roof also?

Fascia will be added on the side but as its built up the neighbouring boundary, it cant have too much of an overhang.

The wall I'm referring to is on the side. The flat roof is sloping to the front.

Hi, A question whether the OBS board should sit on any of the leaf’s of wall. I’m constructing a vented flat roof, the closest joist will be a few inches from the inner wall. Should the OBS sit on the brickwork to provide additional support? See diagram and note I’ve left the inner wall...