Low Pitch Metal Tile Sheeting Roof Build

Joined
4 Nov 2008
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Location
Manchester
Country
United Kingdom
Hi All,

I’m at the roofing stage of my brick shed, thanks to knowledge gained from this forum, thanks all :)

It is made ½ brick (single skin) with piers and has a span of 2.6m and is 7.8m long.

Due to the fixed upvc door height in the side wall being 2030mm (with sill) and only being able the have a maximum height of 2500mm as it’s near a boundary. Sets the roof pitch very shallow :cry:
(I don’t want a flat roof)

The wall plates are already in with a couple of straps only, I will add the rest when I know where the rafters are going, so they don’t get in the way.

I was looking at tile effect metal sheeting (like Masona’s), the one I found will go down to a pitch of 5°.

I’m thinking of making a cut roof for this, it’s not a house or an extension; I look at it as like a garage similar to the concrete sectional ones that have a simple roof, some even have tile effect sheets. I’m only a DIYer but if I take my time and do everything correct with some guidance, I’m sure it could be done. I hope I’ve got the terminology correct for all this!

The roofing sheets are about 11kg/m2 so, 2.6 x 7.8 = 20.3sqm x 11kg = 224kg + ridge, barg + all wood for trusses etc. say around 300kg unloaded. The roof sheet profile is about 30mm high.

I’m thinking of having 6 Rafters 75mm x 50 at 1.2m centres, that would do 6m leaving 0.9m to each gable. The gables will be built up in brick. I could do with birdmouths at 25mm deep just to keep the eaves height down. Ceiling joist of 100 x 50 at the bottom of each rafter pair making a truss. A Ridge beam in the middle that would have to be joined somehow to get +7.8m. I will make two separate trusses on the gables for the bricks to go in. Purlins/batterns of 50 x 50 at ridge, middle and eaves to screw roof sheets into (38mm screw). Maybe some hangers in middle of trusses :?:

If someone can give me some guidance to the above, bear in mind the eaves can’t go too high and I need a 5° pitch. The eaves will increase by 2/3 rafter + battern + roof profile and ridge tile at ridge.

I’m not sure how it will all be fixed :?: There seem to be many ideas out there. As long as the structure will handle the total loads + snow :!:

Any constructive ideas/comments would be greatly welcomed :)


SORRY, JUST REALISED I'VE PUT THIS IN WRONG FORUM
MOVED TO 'ROOFING & GUTTERING'
:oops:
 
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