Trek

Cheers that's probably a good option also. Would you run the ceiling joists off the beam perpendicular (like in pic) or run them parallel?

Cheers mark, yes I'm thinking the same. Have a 2.4 wide window to go in front wall and Hopefully snug a glass slider in also. Will have to contact engineer for size of eaves beam

Take away all locations and codes etc if that's easier. You have a house on the moon that you wish to build a lean to /extension out back as in the photo. How would one go about it any examples out there? Anybody

Just give me one of the numerous ways as an example? Just include the walls must be timber frame....... Anyone have an example? Lol

The walls can't be blockwork unfortunately. They need to be timber (reason being they can be replaced like for like) So I'm using old timbers to frame the walls. I can do pretty much any suggestion or ideas as long as it is simple. Materials wise I'm trying to keep costs down so basic cladding and the like. Property is in regional western Australia, so although not completely exempt from certain council rules and building codes it favours the homebuilder to do his/her due diligence and erect something that meets building codes should one have to show evidence of such things in the future. The 4 walls need to be timber and the rest can be whatever is easy and cheap to build. Corrugated tin is favoured in these dry arid climates. So am leaning towards timber 4 walls 6.5 C purlins 250mm @ 900 centres with insulation on top and 40mm top hats on top again and then the tin.

Yes I'll be doing it myself, wanting to go above and beyond standard code.

Yes the original wall is concrete. It's a bit all over the shop level wise so was going to bypass by building timber wall shown in purple in pic attached. Here would sit a double top plate to pickup purlins that span from back wall to front wall. I guess my question should have been more what are the standout differences in building a single span skillion roof vs having say a universal beam running through centre. With the beam I'd imagine it would need to sit on and transfer its weight/load down to a strong foundation. (Instead of a standard 100mm slab with 300x200 trenches around side would probably need a substantial footing to pick up the weight . Benefits I guess would be running ceiling joists into the U beam giving a flat level surface. Downside i'd imagine losing height of ceiling for beam. Having purlins I guess would negate any cross mid support, but downside would be raked ceiling and light fittings on angle. I would just like to find the most simplistic way of doing it

Some really great feedback cheers. Does anyone actually have an idea about as to how to erect this extension? Going through a builder or like is warranted yes but I came here first to get ideas I can put forward to an engineer say. UK building regs don't apply here so just literally looking for suggestions in shape or process. Thanks

Hi there, I'm just about to build an extension /lean to out the back of my house. Am wondering what the easiest or maybe cheapest way of doing this would be? It's a straight forward skillion roof with a rough 10° pitch. With a span from the back of house wall to the front of around 7 metres (with 400 eaves) I'm looking for some suggestions as I've already pulled the pin and demoed the old kitchen, now in limbo with not much clue as to move forward. I was thinking a cross beam in the middle to pick up the roof of could I do away with this and just use purlins? Here the red line is the existing back if house and the blue line is proposed timber wall I will build to house the kitchen.

Hi just new here , looking forward to joining a cool community of like-minded builders.