Garages & Sheds Question

20ft by 10ft shed base


I was wondering if anyone could help. I purchased a shed (20ft by 10ft) and was told before they came to erect the shed that due to it being bolted straight on to the concrete. They would need the concrete base to be 19ft 10" by 9ft 10" for the shed to fit. We question this with the builder that did the base and he said he prob has a overhanging lip on the shed. Well we did the base to that exact measurement. The day arrived for the shed to be erected and we was in shock when they said the base was too small for them to lay the shed. I said well you sent a email stating the size. Does anyone know why they asked for that size? As I've asked that question to the supplier of the shed but he won't answer it. I have now had to extend the base due to their mess up. They are willing to come back for a charge of £100 to me, told them to stick it. I want to take it further but would like someone to tell me why do think they asked for that size.

3 Answers

As far as I'm aware when you lay a base you always make it bigger Wx L. Why when you got the measurements of the shed didn't your builder know this? If he said there must be an overhanging lip on the shed all the more reason to make the base bigger, as the base ended up smaller than the shed. As far as the shed suppliers go who knows why.

Answered 31st Oct 2016


Member since 13 Jan 2015

generally if your bolting something into concrete you will secure the bolts in the concrete when you are making the base, looking at the measurements it could be where the bolts in the concrete base where supposed to be, so they gave you the measurements for the bolts rather than the base, really a tad unprofessional. depends if you have anything in writing tell you what is required if you have carried out their instructions to the letter . then you can pursue it by asking them to pay the cost of remedial work to rectify their mistaken instructions if they refuse you can take them to the small claims court as a last resort if you so desire.

good luck Alex

Answered 31st Oct 2016

ADR Property Maintenance

Member since 1 Mar 2009

It is possible that the person who advised you on that size base thought the shed didn’t have a floor. Ideally when there is no floor the building should slightly overhang the base all round for the water to drop.

Answered 16th Feb 2018

The Shed installers

Member since 11 Mar 2013

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