porch roof

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porch roof
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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Sat Jun 21, 2008 8:52 am Post subject: porch roof

I am building a lean to porch but need help with roof. anyone have any drawings for sloped roof

joiner_uk
Senior Member

Joined: 08 Apr 2008
Posts: 257
Location: Sheffield

Posted: Mon Jun 23, 2008 9:43 pm Post subject:

I dont have a specific drawing for your porch as I do not know what you want.

What do you need to know?
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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Tue Jun 24, 2008 4:14 pm Post subject:

here is photo of porch so far. need to know how roof timbers are fitted

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ultimatehandyman
Site Admin

Joined: 16 Jul 2005
Posts: 9769
Location: Darwen, Lancashire

Posted: Tue Jun 24, 2008 7:47 pm Post subject:

You might get some ideas here-

http://www.ultimatehandyman.co.uk/forum1/5ft-x-6ft-porch-roof-t4269.html

http://www.ultimatehandyman.co.uk/forum1/door-and-window-canopy-help-t620.html
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Hoovie
Devon DIYer

Joined: 27 Jul 2007
Posts: 8043
Location: East Devon

Posted: Tue Jun 24, 2008 8:33 pm Post subject:

There is also a post here with photos with a Pitched roof being erected

http://www.ultimatehandyman.co.uk/forum1/rain-stopped-play-t5699.html and somewhere on site some diagrams for it
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joiner_uk
Senior Member

Joined: 08 Apr 2008
Posts: 257
Location: Sheffield

Posted: Wed Jun 25, 2008 8:58 am Post subject:

The wall plate you have (the 4"x2") may want to be lifted up slightly so the rafter when fixed is 10mm or so above the block work. The wall plate should be bedded on level with cement.

Fix the 6" x 1" bearer to the wall. Make sure this is level.

Then cut your rafter with the plumb cut at the top, the birds mouth but leave the bottom of the rafter longer (this will be cut back when the rafter is fixed). Once you are happy with your rafter use this as a template for the others. You will probably only have about 6 rafters in total.

Now all the rafters are fitted cut back the rafters for your eaves. Try to match the main roof depth for your soffit.

Post up the pictures of your progress Thumbright

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Lean to roof

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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Thu Jun 26, 2008 8:10 pm Post subject:

will certainly do as you suggest.how do you suggest the wall plate is raised?. am working away from home for about a week, so will let you know how I get on, when I get back.

joiner_uk
Senior Member

Joined: 08 Apr 2008
Posts: 257
Location: Sheffield

Posted: Fri Jun 27, 2008 10:27 pm Post subject:

You could raise the wall plate by bedding it on with cement.
This may only need doing if your using more than 4x2 for rafters
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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Tue Jul 08, 2008 10:29 am Post subject:

have managed to start rafters for roof during short break in rain.
I am thinking I will need rafters at outside walls. Plan to place rafter on wall plate and bolt to out side wall. does this sound right?

consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Tue Jul 08, 2008 10:35 am Post subject:

photo of progress so far

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joiner_uk
Senior Member

Joined: 08 Apr 2008
Posts: 257
Location: Sheffield

Posted: Wed Jul 09, 2008 6:32 pm Post subject:

Looking good Thumbright

How are the finishing the verges with barge board or rendering up to the undercloaking?

I would not put a rafter on the outside wall just cut a short length with the birds mouth on then set inside the first block. You will then be able to finish the corner with a block cut down for rendering. Fix 2 noggins across to support the rafter, fix the top noggin as high up as you can probably on top of wall pate so only 2" high or so.

Measure out from the block work to the end of the rafter to mark your soffit depth say 200mm. Remeber the render will add 25mm.
Mark the end rafters and draw plumb lines then string line across on top of the rafters. Draw you plumb line down from the marks on the rest of your rafters. Take care when cutting back the rafters as this can go wibbly wobbly when the fascia is fitted. Fix some brackets to hold the soffit in place use plywood or 4x1

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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Fri Jul 11, 2008 6:23 pm Post subject: porch roof

How are the finishing the verges with barge board or rendering up to the undercloaking? scratch

Not really sure what you mean, could really do with a drawing of what you suggest. Instead of putting rafter on outside wall
I really am playing this 1 by ear.
Thanks for your help so far

skiking
Senior Member

Joined: 13 Sep 2006
Posts: 3086
Location: Cheshire

Posted: Fri Jul 11, 2008 6:43 pm Post subject:

Where you have cut your blocks at an angle you should put undercloak strips on which overlap the blocks by an inch or so. You then cement up the gap between the strip and the tiles.

Hope these foto's help explain things

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The thin strip in the undercloak which overlaps the bricks by and inch but level with the edge of the tiles

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Cemented up

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consquires
Junior Member

Joined: 20 Jun 2008
Posts: 14

Posted: Sat Jul 12, 2008 4:01 am Post subject:

photos certainly help, what material would you use for undercloaking?
also what type of felt is used under tiles?

skiking
Senior Member

Joined: 13 Sep 2006
Posts: 3086
Location: Cheshire

Posted: Sat Jul 12, 2008 9:28 am Post subject:

Go to your local builders or roofers merchant and ask for undercloak - they'll know what you want - its like an asbestos strip, but not scratch

. I think they come in 1.2mtr strips and double brick width.

The felt is Tyvek Supra (i think). Comes in huge rolls and is not cheap. If your in the Cheshire area you could have the rest of mine in exchage for some beer tokens Thumbright

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