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Log cabin kit or self build?

This is where we don't want anything but evidence of your finest wood butchering in all its glorious, and photograph laden glory. Bring your finished products or WIP's, we love them all, so long as there's pictures, and plenty of 'em!

Re: Log cabin kit or self build?

Postby PearlJammer » 10 Feb 2016, 18:50

So we had to cut the base a bit to square it, wasted a few hours. Sides done and bolted down and just started roof. Should be a pic too

Lee

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Re: Log cabin kit or self build?

Postby Rod » 10 Feb 2016, 20:06

What size timbers are you using and are the side sole plates sitting directly on the slab base?

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Re: Log cabin kit or self build?

Postby PearlJammer » 10 Feb 2016, 21:19

Rod wrote:What size timbers are you using and are the side sole plates sitting directly on the slab base?

Rod

4 X 2 for the frame and there is DPM between the slab and the frame
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Re: Log cabin kit or self build?

Postby 9fingers » 10 Feb 2016, 21:25

If before you go any further, you can jack it up a bit at a time and get a couple of courses of brickwork under the dpc, the life of the building will be extended enormously.

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Re: Log cabin kit or self build?

Postby Rod » 10 Feb 2016, 22:06

As Bob said - get the timber off the ground. The DPM won't do anything if it's sitting in water.

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Re: Log cabin kit or self build?

Postby PearlJammer » 10 Feb 2016, 23:36

How would the water get in, it's on a 6" base? The finish will be ship lap past where base meets frame.

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Re: Log cabin kit or self build?

Postby Doug » 11 Feb 2016, 10:06

I did something similar last year down the allotment PJ on a shed build, I nailed some 300mm wide black dpc on the base of the timbers letting it hang down & cover the base, I then clad down partially over this, the black dpc looks quite smart & hides the base nicely.

My only concern was the bottom piece of cladding would get most of the wet not only from rain running off the walls but also any bounce up from the rain hitting the ground. For this reason I screwed the bottom two pieces of cladding to the shed with stainless screws so that in the future if the wood should show signs of rot they can easily be replaced.

Good luck with your build.
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Re: Log cabin kit or self build?

Postby RogerS » 11 Feb 2016, 11:03

PearlJammer wrote:How would the water get in, it's on a 6" base? The finish will be ship lap past where base meets frame.

Lee


If the shiplap overhangs the base then you might be OK and get away with it. If it were me I'd put it on a brick course.
If opportunity doesn't knock, build a door.
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Re: Log cabin kit or self build?

Postby Rod » 11 Feb 2016, 11:04

It's not clear from the photo (to me) but if the 6" base is sitting above the slabs/ground then you have effectively created a plinth so that would've ok?

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Re: Log cabin kit or self build?

Postby RogerS » 11 Feb 2016, 18:13

Rod wrote:It's not clear from the photo (to me) but if the 6" base is sitting above the slabs/ground then you have effectively created a plinth so that would've ok?

Rod


But if the perimeter of the shed is smaller than the plinth then, as Doug has said, rain will run down the outside of the shed wall and pool at the bottom. Or bounce up from hitting the ground.
If opportunity doesn't knock, build a door.
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Re: Log cabin kit or self build?

Postby PearlJammer » 11 Feb 2016, 21:10

The frame is situated on the perimeter base and the ship lap will go below base but not touch floor surrounding base. We finished the the roof area ready for boarding and felting tomorrow. Also going to wrap shed and put window and French door in hopefully.

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http://i1045.photobucket.com/albums/b45 ... c7ksr.jpeg
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Re: Log cabin kit or self build?

Postby PearlJammer » 11 Feb 2016, 21:15

Front bit of base is sticking out a little but door sill will cover that. Front gable end also done but not pictured. We also put four 4x4 beams from left to right to help stop the walls splaying. I intend to take a little off each sharp edge and stain these.

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Re: Log cabin kit or self build?

Postby Mike G » 11 Feb 2016, 21:33

4x4's to span 4m! :shock: That is crazily undersized. Are you going to drop some hangers from the ridge?
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Re: Log cabin kit or self build?

Postby Mike G » 12 Feb 2016, 08:06

I've worried about this overnight. If your ties are 2no 4x2s side by side, and if you can't afford to replace them with the proper size of timber (min 8x2, ideally 9x2), then instead of having the 4x2's side by side, put one on top of the other. However, you going to have to fasten them together well: glue, tosh nails, bolts, nailed-on ply gang nails, whatever. And if you are going to use them for carrying any load (ie if you store anything on the ties such as lengths of timber) then you should still use hangers and a binder from the ridge. Hangers can be 4x2, binder 6x1. If you don't, and you leave it as it is, those 4x4's will sag under their own weight and could pull off their fixings altogether, leaving your wall plates free to be pushed apart by your roof, and that is a situation of partial building collapse.

Are your rafters directly above the studs in the wall?
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Re: Log cabin kit or self build?

Postby PearlJammer » 12 Feb 2016, 16:28

Thanks Mike for your comments. So just to clarify, a solid piece of 4x4 across a 4m span will not be ok with out support from above. Some pics of the area for reference.In the next post

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Re: Log cabin kit or self build?

Postby PearlJammer » 12 Feb 2016, 16:36

Image

Image


Image

That's it I think

Lee


MOD EDIT: Lee I've been in and cleaned up the redundant web links.
It looks like you have got the hang of the image tag thing now. Bob
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Re: Log cabin kit or self build?

Postby Mike G » 12 Feb 2016, 18:53

PearlJammer wrote:Thanks Mike for your comments. So just to clarify, a solid piece of 4x4 across a 4m span will not be ok with out support from above. Some pics of the area for reference.In the next post

Lee


Correct. Not even close.

You'll need a lintel over the window opening as well, supported on cripple studs, and your rafters should be directly over studs (unless you double up your wall plate (too late for that now!).
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Re: Log cabin kit or self build?

Postby PearlJammer » 12 Feb 2016, 21:06

Thanks Bob, think I have it now

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Re: Log cabin kit or self build?

Postby PearlJammer » 14 Feb 2016, 16:30

Could anyone advise me on the difficulty of changing the pitched roof to a flat roof before I proceed any further.

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Re: Log cabin kit or self build?

Postby PearlJammer » 14 Feb 2016, 19:24

Is it even possible without trouble?

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Re: Log cabin kit or self build?

Postby 9fingers » 14 Feb 2016, 21:20

The first thing to check will be the new eaves height and see if that contravenes the PDR dimensions.

You are possibly going to need 9 x 2 joists and then firring strips to give the "flat" roof a run off angle.

I "think" the minimum angle is 1 in 80 although I prefer steeper say 1 in 40.

You might want to think of having the highest part of the roof in the middle draining to both sides like a very shallow pitched roof. This will give you the run off with less height.

Your existing rafters can be cut up as the firring strips.

EPDM rubber is the stuff to use for the covering. It will possibly last you out.

Mike will possibly have chapter and verse and better than my ramblings.

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Re: Log cabin kit or self build?

Postby PearlJammer » 14 Feb 2016, 23:25

Thanks fingers

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