Install rafters in garage

minnow

Hi,
My garage doesn't have standard rafters from wall plate to wall plate, instead there are ties at a higher level.
I would like to install rafters over half of the garage and floor it just to provide extra storage space.
I'm trying to figure out the best way to install them. I wouldn't be able to install full width beams from inside, and don't want to touch the slates.
Would I have to install two beans and join in the middle? If so what type of connection.
If anybody has photos it would be great.
I hope I can upload a photo of the situation.

minnow

Photo attached

Dobloman

minnow wrote: »

Photo attached

You are mistaking the term rafter with collar tie.
The rafters are installed correct. They are running from wallplate to ridge board on top.The collar ties are the timbers spanning across them half way up.To answer your question.Yes it's possible to install joist and floor it out to create storage space.

minnow

Dobloman wrote: »

You are mistaking the term rafter with collar tie.
The rafters are installed correct. They are running from wallplate to ridge board on top.The collar ties are the timbers spanning across them half way up.To answer your question.Yes it's possible to install joist and floor it out to create storage space.

Hi, yes sorry if terminology is not correct.
I know it's possible, what I'm trying to understand is how to install them. I can't have one full beam across the width as I don't see how it could be installed without taking off slates etc. Should it be two half beams? How to join? Etc.

Bonzo Delaney

Prob get away with 7x2s over 13ft if its just for storage as youll only have about 3ft space between that and the collar ties.
You could cut the joists as long as you can to slide in one side fully over one wallplate then back over the opposite wallplate. Keeping 100mm bearing . Then fix to sides of rafters
If you cant achieve 100mm bearing on both wallplates, when the new joists are in position a 4x2 can be fixed securely to the wallplate under the joists to make up the bearings. Then a line of 7x2 bridging down the middle would stiffen it all up.

GinSoaked

If you have plenty of headroom then you could put your joists on joist hangers some examples https://www.goodwins.ie/categories.html?name=Joist+Hanger&type=simple

Dobloman

GinSoaked wrote: »

If you have plenty of headroom then you could put your joists on joist hangers some examples https://www.goodwins.ie/categories.html?name=Joist+Hanger&type=simple

The talent in here is outstanding.Well done..

listermint

Dobloman wrote: »

The talent in here is outstanding.Well done..

You know when you put two dots at the end it comes across as sarky. Unsure if that is what you were going for.

Dobloman

listermint wrote: »

You know when you put two dots at the end it comes across as sarky. Unsure if that is what you were going for.

Sarky.????

Calahonda52

That a nice space! or should I say nice .. space ..
OP, if you turn the 7 by 2 on its edge when sliding it up it will allow you a bit more room.
If I was doing it I would get a slating lathe and put cardboard templates at each end, cut at the correct angle, much easier to get right than a big 7 by 2 or what ever you decide to use.
Have fun, it look a great space!
..

ps, the wall hangers would work either the ones in the link require a top fixing to the wall plate, you can get ones that will allow fixing to the edge of the wall plate or else drill the ones in the link

Dobloman

Calahonda52 wrote: »

That a nice space! or should I say nice .. space ..
OP, if you turn the 7 by 2 on its edge when sliding it up it will allow you a bit more room.
If I was doing it I would get a slating lathe and put cardboard templates at each end, cut at the correct angle, much easier to get right than a big 7 by 2 or what ever you decide to use.
Have fun, it look a great space!
..

ps, the wall hangers would work either the ones in the link require a top fixing to the wall plate, you can get ones that will allow fixing to the edge of the wall plate or else drill the ones in the link

Them wall hangers are for joints in the block work and not suitable for hanging over the wallplate

listermint

Dobloman wrote: »

Sarky.????

You heard me.

Knock yourself out genius. You offered no advice other than correcting people's terminology.

Dobloman

listermint wrote: »

You heard me.

Knock yourself out genius. You offered no advice other than correcting people's terminology.

Mr.Listermint if you look back at the information that I posted everything that I posted is correct.There were also other post by others which is also very valuable to answer the query. Anything that was posted up here that was correct I agreed with and anything that was incorrect I commented on .If your not able to provide a solution to the original question posted then you best stagger off to another area.