Garage Flat roof

[hobnobman]

Hi all

this is my first post on this site i hope i can be as much help to everyone else as much as you will be a great help to me.

First project i need help with is my garage roof, its roughly 2.7m wide by 5.2m long, its a felt roof at the minute and its leaking like a sieve! the felt is not worth repairing and the roof trusses are rotten so the whole lot needs taking off and starting again from scratch.

The way that the roof currently is constructed is that the right hand side wall as if your looking at it from the front is slightly higher than the left, each roof truss sits in a gap inbetween the bricks instead of sitting on top of the brick work, they are spaced about 371mm apart so i have 14 trusses through the length of the building and have firings nailed to the top of the trusses that give the fall of the roof for the rain water to run off.

My questions to you guys are first of all does it matter that the roof sits in gaps in the brick work instead of ontop of the bricks as on most of the tutorials or pictures iv seen it tells you to sit the trusses on a board that runs ontop of the brickwork?

What material would be best to go ontop of the roof to finish it off and make it water proof, iv been told felt and Fiberglas as very much out of date is there some sort of sheet material that would be good what do you guys recommend? and how do you go about fitting that particular type of material you recommend?

around the sides of the roof where the fascia boards bolt to the roof trusses do you want any overhang the other side of the brick work from the trusses of make them flush with the wall? and along with the fascia boards is there anything else i should be doing to help waterproof around the sides where the fascia boards sit?

what would be the best way to attach the roof trusses to the rest of the building, iv been told that wall plate strips are the best way to ensure the roof trusses are attached to the brickwork effectively is this correct? also in the garage at the minute the garage roof is only attached with about 4 of these wall plate strips two at the front and two at the back, is it worth putting these wall plate strips on every roof truss or can you do a smaller amount of them spaced out?

What weatherproofing paint would be best to treat the roof trusses with as they are currently untreated and sitting against brick it would be better for them to be treated?

I really do appreciate any advice i get

I look forward to hearing from you all

Cheers

Ben

 

[freddiemercurystwin]

Got some photos .......

 

[hobnobman]

i will get some as soon as i get home and put them up

 

[Ian H]

Are you thinking of DIY'ing it?

I bet you could re do it as a tiled pitched roof for about £500.

 

[hobnobman]

Yeah I am thinking of DIY'ing it whats a tiled pitched roof and will it work with the roof trusses as i have already bought the wood

 

[Ian H]

Up and down like this one:

 

[hobnobman]

it would look nice but i dont really have the time to do the extra work like building up the bricks at the back and the front, i have loads of stuff in the garage that i cant move anywhere else so im planning on doing it as quick as possible

 

[freddiemercurystwin]

What's holding that ridge up then? Are there any ties? Cos I can't see 'em.

 

[garyo]

I did a flat-to-pitched upgrade a few years back, based on reusing the flatty joists as the ceiling joists and just adding rafters. You can leave the flat roof in-situ - it makes a great working platform, and then forms your attic floor when you're done, and then means your garage doesn't get (very) wet during the build.

Depends whether you actually mean 'truss' when you say 'truss' though, and how rotten they actually are?

 

[Ian H]

What's holding that ridge up then? Are there any ties? Cos I can't see 'em.

It's sat on a pillar inside the garage, the rafters are fixed to it and are A shaped. That and 76 sky hooks.

 

[hobnobman]

"

"

"


Ok so here are the photos of the garage roof as it is at the minute, i have probably been saying truss as an incorrect word, when iv said truss iv just meant the beam of wood that goes between one side of the wall to the other not the triangle shaped structures, and some of them are more rotten than others, a few of them are barley holding on where they sit on the wall that much has rotted away, iv got another picture that i found of an advice site, is this picture below a good way to do the flat roof as in structure wise?

Im also still unsure what material to use to go on top of the roof instead of felt?

 

[catlad]

1990 is that red shed/garage something your doing yourself?

 

[Ian H]

Yes, was 3 or 4 years ago.

 

[garyo]

Yes, was 3 or 4 years ago.

I think that steeple you have coming out the top is a bit tacky, but each to his own.

 

[Ian H]

I think that steeple you have coming out the top is a bit tacky, but each to his own.

I do too but it was either that or wider steps to avoid banging your head on the guttering.