Roofing material choices

[addjunkie]

So after the storm I was up in my shed roof, putting a few extra fixing in the ridge as it had lifted a bit. The roof is Onduline over 12mm OSB. I noticed the Onduline has hardened with time 12 years, and a few of the nail holes with wind and walking up there are a bit big and will be letting in a bit.

My thinking is to replace before it becomes a major issue, roof pitch is 15 degrees. Id like real slate to match the house and barns but cost and weight are just not realistic.

My options are more Onduline, BoxProfile over the OSB, Tapico Slate over OSB, Supalite roof tiles over OSB like used on conservatory roof, EPDM, roofing felt. Open to other ideas too, but that all I can think of so far.

 

[sako243]

You can get slate effect box profile.

 

[addjunkie]

You can get slate effect box profile.
View attachment 482587

Yes I know if it were the pan tile look, Id agree, but the slate version looks about as much like slate as I do. Its also pricey compared to box profile.

 

[sako243]

That's fair enough, my choice would be box profile for ease of installation and durability.

Yes I know if it were the pan tile look

Like this?

41/1000 Tile Form 0.6 Thick GreenCoat® Mica Coated Roof Sheet

Uses of Tile Effect Roofing SheetsAvailable as single skin roof tile sheets for domestic, industrial, commercial and agricultural buildings. These metal tile effect sheets can be used to over clad an existing roof, or an external face of a built-up insulated system. Suitable for roof pitches of...

www.cladco.co.uk

 

[Newlands]

I've put Tapco slates on my house, which replaced Marley concrete tiles. The weight reduction was enormous! I'm really impressed with them, both the appearance and how easy they are to lay. They are expensive compared to the bog standard artificial slates but well worth the extra because they aren't going to be an allotment for moss and algae. They don't necessarily have to be laid on battens - Tapco show several different ways of constructing a roof, including lightweight conservatory roof replacement which would apply to a shed I guess.

 

[gaz1]

you will be boarding it underneath and felting it

you can use fibre slate as well cheaper than tapco also same price as normal slate as well

plastic roof tile is not cheap

Supaslate Eco Line Plastic Roof Tile Synthetic Slate Effect - 1m² Pack (ALL COLOURS) - Roofin Online Store

Supaslate Plastic Roof Tile - Slate Grey Manufactured in Great Britain, Supaslate is a lightweight synthetic alternative to natural slate.

roofin.co.uk

what measurements are you dealing with if you fully decided you want a slate roof

grp roofing slate sheet

Readymade Fibreglass (Grp) Slate Tiled Effect Roofing Sheets | eBay

The Spanish tiles are square at 200mm x 200mm & the Brazilian are rectangular at 150mm x 200mm. You will save hours on your job using our roofing panels. View our roofing galleries on our website for more photographs;.

www.ebay.co.uk

 

[Gareth J]

IMO, 15° is too shallow to look "right" with slates. Yeah, profiled tin or thin, modern, slatesesque alternatives are watertight at that pitch so are an option practically.

Standard box profile looks a bit industrial. But 13/3 or standing seam looks a bit more appropriate in a residential application. Hard to beat the installation ease with cut to length;

Metal Roofing Sheets - Corrugated and Box Profile | Cladco

Metal roofing sheets in a range of profiles including corrugated, box profile and tile form. High quality finishes. Fast delivery. Excellent ratings on Trust Pilot.

www.cladco.co.uk

Have used them but not for ages.

 

[addjunkie]

The building is 40x 20 feet. Structure is all ready roofed. And is 12mm osb over roof purling/ trusses, but not strong enough for real slate as uprights in the walls are only 4x11/2”.

Paying for slate isnt an issue, but a bit over the top for a shed. Picture shows how the roof is done.

The fibre glass slate looks to have potential, but not sure I like the way its just screwed down and the screw heads get a dod of silicone. We are quite exposed so would require a lot of screws. Then as fibre glass is brittle, would it cope in high winds, or crack.

 

[gaz1]

i wouldnt use it

but i would use fibre slate at 2.00 a slate as its lighter than normal slate

but latts ans fibre slate make your rood expensive so its up to you on the cost just to have it look the same

for me id just metal roof it with profile sheets instead

 

[gaz1]

if i wanted tile effect or close as id go for this

41/1000 Tile Form 0.6 Thick Graphite Grey Mica Coated Roof Sheet

Often referred to as tile effect sheeting, these Tile Form Roof Sheets are designed to look like an authentic pan tile roof. Exceptional GreenCoat® Mica BT coating gives high-quality and longevity. Excellent ratings on Trustpilot.

www.cladco.co.uk

 

[Newlands]

you can use fibre slate as well cheaper than tapco

Cheaper because they're nowhere near as good - brittle, don't last as long, lose their surface finish after 10 years and grow moss like there's no tomorrow. You get what you pay for.

 

[addjunkie]

IMO, 15° is too shallow to look "right" with slates. Yeah, profiled tin or thin, modern, slatesesque alternatives are watertight at that pitch so are an option practically.

Standard box profile looks a bit industrial. But 13/3 or standing seam looks a bit more appropriate in a residential application. Hard to beat the installation ease with cut to length;

Metal Roofing Sheets - Corrugated and Box Profile | Cladco

Metal roofing sheets in a range of profiles including corrugated, box profile and tile form. High quality finishes. Fast delivery. Excellent ratings on Trust Pilot.

www.cladco.co.uk

Have used them but not for ages.

Rhino do a 19mm box profile sheet, which looks less industrial, though I dont mind the look of standing seam roofing sheets.

 

[Morrisman]

I've put Tapco slates on my house, which replaced Marley concrete tiles. The weight reduction was enormous! I'm really impressed with them, both the appearance and how easy they are to lay. They are expensive compared to the bog standard artificial slates but well worth the extra because they aren't going to be an allotment for moss and algae. They don't necessarily have to be laid on battens - Tapco show several different ways of constructing a roof, including lightweight conservatory roof replacement which would apply to a shed I guess.View attachment 482589

The neighbour of a mate of mine has just had his bungalow roof redone with Marley, and the old slates were sold on for a grand. My mate was thinking of getting his done the same, then the roofs would match.

But, another mate, who is a new build housing inspection manager for a big home building company, pointed out that Marley tiles are 30% heavier than slates, and did the guy check his roof timbers were up to the job.

 

[frank horton]

addjunkie
if u can, get the insulated roof sheets....on the plus side the inside panel is usually finished in white....great for light reflection....
some of mine in the old days came from a factory roof.....
They r self supporting over quite a span, no need for extra roof supports but be sure u have something decent to fix the panels too.....
I've just done a roof with the panels fixed to excisting wooden roof frame.....once screwed down everything became quite solid....
this roof with 40mm insulatioon is fixed on 3m centers......and still nice to walk on.....
would like more steel but we dont sufer snow load and steel is roughly 4 times the price of UK steel...

 

[Blobber]

I think on that pitch slates or composite slates will catch the wind, Id go with box profile personally or some of the other patterned sheets, lots of screw though and butyl strip down the joints

 

[Newlands]

I think on that pitch slates or composite slates will catch the wind

The advantage of Tapco slates is that they have a slight curve on them, so when you nail them down the toe of the slate presses down onto the course below. The pitch on the front of my place is 15º, which I think is the minimum recommended, and I have no worries about them lifting. When I laid it there were a couple I had to lift again to rectify a cock-up and it was difficult to say the least - I used 30mm stainless ring nails rather than copper.
For a big workshop roof, however, I'd be inclined to go with box profile sheeting as you suggest because its so much quicker, plus there's plenty of good colours available.