Decking roof

[danielR]

Hi all< i want to build a decking roof but I could use some advice-timber, plans.... The size will be 12'x 6' and it should look like the sketch I have attached. Do I have to dig some holes for the posts supporting the roof?

Regards,

DanielR

Untitled

• danielR
• 17 Mar 2014
• 1

 

[pinenot]

Sorry, what's posted is a mono pitch roof, set against a wall, so are you asking advise on this or are you contemplating a walk on decking roof over an extension?...pinenot

 

[danielR]

Unfortunately that is the only sketch I have found at that time; the decking will be over a concrete base, at the back of the garden, not over an extension. I don't want a any fancy roof just a basic one. How many posts should I use? Will 4x4" be enough? Should the rafters be at 16 inch centre? I have spent a lot of time looking for some plans but I couldn't find any...

Regards

 

[pinenot]

Here's one to be going on with - https://www.google.co.uk/search?q=p...rJ0QWbv4D4AQ&ved=0CAkQ_AUoAQ&biw=1280&bih=675 - ...pinenot

 

[r896neo]

So this is just a canopy over a decked area?

What do you intend to put on the roof? Tiles? MArvec sheets?

 

[danielR]

Yes, something like a canopy and I think I will use osb and some blue or green bitumen flashing...

 

[danielR]

Tanks for the link pinenot, very useful

 

[howy1]

DanielR this has been an interesting post for me as i am looking to do the same thing , mine is approx 4.0m out by 4.5 m wide i have two 4x4 posts that will hold 4x2 cross member and then 4x2 rafters coming from house to front of cross member . i am putting tongue and grove on the 4x2 because you will see underneath and it looks prettier also i am putting tile shingles on top of this for looks again , hope this is of some interest
Howy

 

[danielR]

Hi Howy, thx for the post, ting and grove is a good ideea, actually it will look a lot better than osb... Is the 4x2 enough for rafters? I was thinking of 6x4 for posts, and 6x2 for rafters but now I think that the 4x4 posts and 4x2 rafters will do the job. Are you going to concrete the posts, or planning on using some brackets to attach them to a concrete footing or base?

Cheers

 

[howy1]

Hi Daniel, the posts are already in as I had a pergola coming off the house on my deck
they are cemented in with those ready mix bags for posts but I also bolted them to the deck supports. Regarding timber sizes I guess you cant over do it but I disscussed this with my brother in law who is a builder and as he says terrace house wooden floor joists are 4x2 anb look what they support, also I have a 4x2 wallplate bolted to my house for the rafters to rest on, hope thie helps
Howy

 

[danielR]

Thank you howy1, that makes perfect sense, you are right, all the joists in my loft are 4x2 and same in my living room. I will be using treated 4x2 for rafters and 4x4 posts, tongue and groove boards and something like this
http://www.brico.com/madera/tegola-americana/tegola-americana.html
but blue or green, it will blend better with the surroundings.
This is my garden, a big mess....where the old shed is there is a concrete base where the deck will be, and on the left will be another shed.

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• danielR
• 22 Mar 2014
• 1

I've got "Black & Decker' guide to decking" book but so far for about half of the book the author is talking only about a single tipe of decking, looking forward to read the other half...
Thk for the replay and good luck with your decking.

DanielR

 

[howy1]

Hi Daniel, bak again those shingle tiles can you get them in this country or are they imported as I have been looking at various shingles and there quite expensive so I wondered if these would be cheaper.
howy

 

[danielR]

Hi howy, yes, you can find them at Wickes, £13.33/sqm, I didn't remember the exact name and I couldn't find them last time so I've had a look on google images... This is the link
http://m.wickes.co.uk/search?text=armourglass

I have worked with this product few years ago and I remember that it has been highly recommended. This is for the instalation:
http://www.ikogroup.co.uk/SiteFiles...lass-Square-Butt-Roofing-Shingles-_03-10_.pdf

I hope this helps

Daniel

 

[howy1]

Thanks Daniel , a bit to chew over.
Howy

 

[danielR]

No worries howy, I hope this shingles are good enough for your project. One last question regarding this type of roof, how are you planning to join the rafters over the posts? I suppose that you are going to install a plate, and the rafters would rest on it, but what joining method should be used?

Cheers,

DanielR