Browse Forums General Discussion 1 May 07, 2010 10:45 pm Hi All, Have a few questions in regards to a freestanding double garage (14m(L)x7.7m(W)x3m(H)) I want to build. Already have council approval for it to be built on the boundary and the shed will be internally split into a 'workshop' area with a toilet/shower which will be gyprock lined and fixed to a wooden frame. This area will also have its own internal roof so it will be isolated and insulated from the rest of the shed. The rest of the shed will be for storage & cars. Question 1. From peoples experience what do they recommend for the concrete slab? Ie what are the pros & cons of: 1) building the shed first and then setting the cladding into the concrete or 2) pouring the slab first and then building the shed? Question 2 Can anyone recommend a good, reliable & fair priced shed builder for the Adelaide area? Question 3 Are there and potential problems with the construction of the workshop area and is there anything I should consider before starting? Thanks Re: colourbond garage/shed questions 2May 11, 2010 8:47 pm I can't help with your other questions ... but Question 1 ... I was advised that it was stronger to erect the shed then lay the slab. We live in a high wind area and that's what we did with a shed that was about 9mx7.6m. Footings are deeper and then the slab helps seal it all in. Re: colourbond garage/shed questions 3May 11, 2010 9:14 pm We have a smaller shed than that, 4.4m x 6m, and the slab went down first. It may all be dependant on the manufacturer of the shed. In my opinion (but I'm happy to stand corrected) size won't matter because a bigger shed will have more anchor points to the slab anyway. Most houses are anchored to a slab. Geoff - Decophile. Re: colourbond garage/shed questions 4May 12, 2010 12:34 pm Hi Lyno69, We are in Adelaide and our 6m x 4m colorbond shed is going up next week. We bought it through Olympic when they had one of their sales. They recommended putting the shed up first then the slab after. Cheers Jane Re: colourbond garage/shed questions 5May 12, 2010 10:38 pm whattodo, Think I will be going with Olympic as well. Seems to be the best priced even though there a lot of companies out there claiming to be cheaper. Think that cementing the cladding will be the way to go as well to keep the moisture out, especially as I will be fitting part of the inside of the shed out. Also, for the site prep a guy quoting suggested I build up the site 200mm above the current level to stop the shed from flooding. Is this overkill considering there are no real drainage points in my block? Re: colourbond garage/shed questions 6May 13, 2010 11:01 am Hi Lyno69, Sorry can't comment on the levels - but I know everything that Olympic suggested, the builder for our house extension has agreed when we have run it past him. The materials got dropped off today and the steels cetainly look good! Olympic have been around for years and we also found their pricing the most competitive. All of the documentation was perfect for council approval - very straight forward! Cheers Jane Re: colourbond garage/shed questions 7May 13, 2010 5:40 pm I guess you have already got your answer but laying the slab first is OK for smaller sheds provided they recess the edge of the concrete down to stop the water driving in under the wall cladding. Larger sheds and garages are usually concreted after construction, to avoid bolting columns to the slab, and they can raise the concrete level about 10mm to seal along the wall cladding. Olympic are good. Ive got one that I erected, but the only problem was they didnt provide the Tek screws the same colour as the iron, I had to buy those myself Arfur Re: colourbond garage/shed questions 8May 13, 2010 8:09 pm Uncle Arfur I guess you have already got your answer but laying the slab first is OK for smaller sheds provided they recess the edge of the concrete down to stop the water driving in under the wall cladding. Larger sheds and garages are usually concreted after construction, to avoid bolting columns to the slab, and they can raise the concrete level about 10mm to seal along the wall cladding. The cladding goes down past the edge of the slab so you would need a flood, not driving rain, before any water got in. But anyway, if you want to seal the gaps, there is a product called Vermaseal that gets installed when the shed gets erected. For our shed it only cost $144 to install. Like the name suggests it also prevents little furry critters from getting in. It is made from plastic and sits over the edge of the slab and is held in place by the cladding. Here's a link: http://www.shedproducts.com/prod2-vermaseal.html Geoff - Decophile. Re: colourbond garage/shed questions 9May 13, 2010 8:51 pm I built a 6x9m shed 3 years ago. i poured the slab then erected the shed because i was told that i would void the colourbond warranty if the concrete was poured up to the cladding. In the end I formed a 25x50mm recess around the slab so that the cladding would be flush with the slab and would also sit 2mm above the recess. This 'stopped' vermin from entering through the cladding. Plenty of other places for them to get through Re: colourbond garage/shed questions 10May 14, 2010 6:05 pm bicko123 I built a 6x9m shed 3 years ago. i poured the slab then erected the shed because i was told that i would void the colourbond warranty if the concrete was poured up to the cladding. We built our shed in January this year and did the same (slab first) for the same reason. This was the recommendation of the shed supplier. Re: colourbond garage/shed questions 11May 15, 2010 5:46 pm We built a 6x9m shed and did the slab first. Easier to reinforce and was done while waiting for delivery of the kit shed. Im in QLD and got ours from Total Span. They weren't the greatest, some bits were missing, but they fixed it for us. Re: colourbond garage/shed questions 12May 13, 2013 10:06 pm I'm planning on doing slab first and then single garage on later. Is there anything I need to put in/on the slab during pouring to anchor the garage too or does the garage just bolt to the concrete with dyna bolts? Re: colourbond garage/shed questions 13May 14, 2013 7:31 am Our kit came with two 'stirrup' (not sure if this is the technical term!) attachment points that were concreted into the slab. Re: colourbond garage/shed questions 14May 14, 2013 11:41 am Those advocating the slab be poured before the garage/shed is erected are assuming the columns come with base plates for fixing. The only time I have seen this with the SA Olympic garages I have bought and erected was those with the (out-dated) timber rails and purlins where the twin tubular columns had a small base plate, to bolt on a 600mm extension for concreting into the ground. This small base plate is not sufficient to fix the garage to the slab. Arfur Re: colourbond garage/shed questions 15May 14, 2013 1:05 pm Like others our new shed 16L x 9W x 3.6H went on the slab rather than poured inside. All our columns are RHS 100x150 with base plates. Holes were drilled in the slab and bolts placed in with Chemset adhesive. The cladding comes down slightly past the slab. We filled the gaps with expanding foam and have no rodent problems. One thing to remember with pouring the slab later, is that if you need the 3m height in your shed ( ie caravan or similar access) your doorway access will be reduced by up to 125mm. So your doorway may only 2.6 or thereabouts in height. Also sliding door access will give greater height than a roller door. Settlement 1/2/12 New Shed 23/3/12 Slab poured 27/3/12 Frame complete 4/5/12 Roof complete 1/6/12 LOCKUP 29/6/12 Our new build blog http://kareenhillsownerbuild.blogspot.com/ DIY, Home Maintenance & Repair Hi all I've got a brick garage/shed at the back of my house. It's been hit at some point (before I owned it) and has a large crack running down through the bricks. I want… 0 8747 Yes i guess this is one of the main reason as i checked one post foundation 4 9995 Cheers. The painted render is a bit chalky to the touch. To prepare the surface for best adhesion, what would you recommend? Also, given that there must be some… 6 8509 |