flat roofs

t6080

hi

I am in the process of building a house. part of the roof section is completely flat and have being recommended to use something like fiber glass which i dont no much about. is it expensive and does it last is what i would like to know? And on another part of the roof with a slope of aprrox. 9 degrees the architect wants us to use something like zinc and if not zinc due to price of it maybe something like sarnafil. But was talking to a mate and he said that i might be able to counter batten it and use slate which would be great as it would be cheaper. would counter battening work? what is sarnafil like? or is something like zinc the way forward? area of roof at 9 degrees is approx 70 m squared

thanks
t6080

BryanF

t6080 wrote: »

hi

I am in the process of building a house. part of the roof section is completely flat and have being recommended to use something like fiber glass which i dont no much about. is it expensive and does it last is what i would like to know? And on another part of the roof with a slope of aprrox. 9 degrees the architect wants us to use something like zinc and if not zinc due to price of it maybe something like sarnafil. But was talking to a mate and he said that i might be able to counter batten it and use slate which would be great as it would be cheaper. would counter battening work? what is sarnafil like? or is something like zinc the way forward? area of roof at 9 degrees is approx 70 m squared

thanks
t6080

What was on the planning?. I'd be uncomfortable about slate at that angle..

t6080

on the planning i have said i shall be using some kind of membrane or metal roofing. you think slates are a non runner so?

Outkast_IRE

t6080 wrote: »

on the planning i have said i shall be using some kind of membrane or metal roofing. you think slates are a non runner so?

Slates at the angle i wouldnt like , im open to correction but assuming rain and wind are in the right direction and strong enough water could easily make its way past the slates.

t6080

Outkast_IRE wrote: »

Slates at the angle i wouldnt like , im open to correction but assuming rain and wind are in the right direction and strong enough water could easily make its way past the slates.

think i may have got angle wrong 14 degrees if that makes any difference

Outkast_IRE

t6080 wrote: »

think i may have got angle wrong 14 degrees if that makes any difference

Have a read of this thread few quotes saying in a general sense 25 degrees minimum for standard tiles, and othere suggest there are certain types of tiles can go to 15 degrees , personally i wouldnt be a fan of tiles at such low slopes.

http://www.boards.ie/vbulletin/showthread.php?t=2055228331

t6080

Outkast_IRE wrote: »

Have a read of this thread few quotes saying in a general sense 25 degrees minimum for standard tiles, and othere suggest there are certain types of tiles can go to 15 degrees , personally i wouldnt be a fan of tiles at such low slopes.

http://www.boards.ie/vbulletin/showthread.php?t=2055228331

thanks for that

RenoAl

I'm adding an extension going with a zinc roof, we are using a fiberglass membrane for water tightness. Makes sense to me, if they makes boats from it.

t6080

RenoAl wrote: »

I'm adding an extension going with a zinc roof, we are using a fiberglass membrane for water tightness. Makes sense to me, if they makes boats from it.

was thinking the same but part of the roof is nearly completely flat and i am wondering will the fiber glass be alright on its own as i think you can put zinc on a nearly completely flat roof. also the cost of the zinc. what type of prices are you getting back? also very hard to know who to get it i do decide to run with zinc as not many people houses have it.

BryanF

here's a quote I got recently, 20msq zinc standing seam roof, flat profile fascia, soffit, hidden gutters, downpipes €3500 (not including substructure)

t6080

BryanF wrote: »

here's a quote I got recently, 20msq zinc standing seam roof, flat profile fascia, soffit, hidden gutters, downpipes €3500 (not including substructure)

if ya dont mind me asking if you could PM the company/person who gave you that quote as my area is approx 67msq and have being getting quotes nearly 5 times that

Unlimitedman

I have an approx 80 square meters of flat roof what would the rough cost be of zinc for it would you say?

jakko86

Slate at that angle wouldn't need wind to drive in rain, capillary action would allow the water past the lap on slate. Ie the slate would suck up the rain where they are in contact with each other. My advice is do not slate it will cost you more money in the long run.