Non Square garage roof?

[DonkeyZ]

Hello everyone, I found this forum in google and hope someone can help me

I have had built a garage about 9m x 5m at one end and 7m at the other. It is that shape to maximise the space on the land. Now the builder has built it we are having a problem getting someone to roof it so maybe i'll do it my self . I want to use a marley modern concrete tile but people say they shouldnt be cut at the bottom so does anyone know how to roof this awkward roof. BTW, to take the twist out of the tiles we are taking the back wall higher at the short end.

Thanks in advance

 

[noseall]

diagonal walls= nightmare.

is there any way you can square the roof off and have angled cut backs with large diminishing angled soffits?

 

[DonkeyZ]

Thanks for the reply noseall. The builder says we could put plenty of 18"DPC along the bottom and then cut the tiles so if they let water thru it will hit the dpc and run into the gutter, does this sound ok?

Your idea popped up last night when i was talking the the guy who did my drawings. It seems a good idea, not sure how many times we will have to cut back and guttering could be awkward but it is certainly a possibility

Anymore ideas?

 

[masona]

A hip roof Won't be easy to find the centre point unless you scale it to a drawing to see if it can be done

 

[DonkeyZ]

It is hipped at the large end and a small gable at the short end.

The small hip is to be done away with. The pitch is going to be about 30 deg at the front and 17.5 at the back.

 

[masona]

No, I meant 4 side hips to the centre of the roof area and no ridge.

 

[DonkeyZ]

Thanks for the help guys. The truss company have come up with a good idea for the trusses and were are just going to have to trim the bottom of the tiles at the gutter.

 

[datarebal]

Simply use an undercloak at the bottom bed the cut tiles onto this and point up.. keep all tile channels clear.. Easy...

 

[freddiemercurystwin]

This type of roof is called a diminishing course roof, the gaps between the battens get smaller as you traverse up the roof and the courses diminish. I believe this technique is normally used with slates but I can't really see why it wouldn't work with concrete. Obviously with plain tiles not interlocking.

 

[datarebal]

The tiles will dog at the bottom corners.. it is not good practice

 

[datarebal]

But you could put a cut course under the ridge

Moderator 3

Welcome to the forum, use the

next time

 

[freddiemercurystwin]

The tiles will dog at the bottom corners.. it is not good practice

Do what?

/has never tiled a roof in his life

 

[datarebal]

obviously not

 

[freddiemercurystwin]

obviously not

Wow, thats such a useful answer, you clearly know everything about roofing why dont you enlighten us?

 

[datarebal]

I gave a perfectly good solution to this not so tricky problem,Based on practical experience not on how much time I spent searching on Google..