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He said the base should also stop any movement as I was complaining about the footings.

So basically since the sectional pieces are long they won't crack but may lean over time. We have a sectional Compton garage built 30-40 yrs go which is leaning as the base is cracked. We bought the house with it and was thinking of getting rid. Heard Compton garages are good so may repair instead .

Can't see why you would biulding retaining wall /footings for a sectional garage?

This is the quote I got from a guy who would build a base for sectional garage . It's same as block build method. After my site visit I have pleasure in submitting the following quote. Dig and lay footings to build small retaining wall to three sides of garage base. Supply materials and...

They build garages for a living. The told me a base would be concrete sections on top. They didn't say how deep they will dig but quoted £800 for base only.

I understood that if you have a base already in situ they just install the sectional pieces on top of that and even if it's made new it's the same. The build however will have the floor concrete spanning the walls so will adhere to them.

My sectional garage installer was going to have just 4-6 inches of concrete with hardcore and then drop sectional pieces on top. The weight would have been similar or probably more.

What I don't get is when you have a sectional garage installed they don't use a foundation wall. They put concrete blocks on top of a base same thickness as one you build. Why does that not sink or move and yet we think blocks on foundation wall and thicker concrete strip will fail.

Foundation wall has started with blocks on side with motor underneath.

Any deeper would have made no difference it would have been top soil again. So if when you do slab for floor you just use 100mm hardcore and 150mm concrete then why would that not sink when u put a car on it. You don't dig 50cm down for floor.

I'm no architect. I invited a builder to price a garage conversion. I told him exactly what I wanted doing. Where the stud wall needs to be and window and size. He told me what he is going to do and and the price . We shook hands and that's it. No fancy drawings. I specified materials for wall...

I supposed you could get ripped off by an expensive cowboy builder just as much as a good price one. I've seen his work that why I'm giving him the benefit of the doubt.

BOGOF. Lol

No I'm a novice to this. I know what one is but building anything is not my cup of tea. I must be as it's on slope. Checked sizes and tge width is 300mm with depth of at least 6 inches but 20cm deeper areas as it's on a slope.

We have a 300cm wide footing which is 45-50cm deep. This will support a single brick so load will be less than double leaf.

Actually he dug around 50cm with some areas less. The concrete is is around 200cm plus. I've not measured but from my estimation 30cm is left to ground level or less. Blockwork will therefore start below ground level.

Got quoted £1500 for a sectional one so less than 5k sounds about right. Mines cheap as I'm having another job included as well.

The ground is lawn but will be compacted with hardcore. Has lots of stones and bricks in it.

Not sure why your think anything more than 150-200mm is required. It's garage FFS not a double storey extension. And we're not living in the arctic our winters are getting warmer .

What do you mean he hasn't started it yet. I've agreed the price but I'm now concerned that he may not do it to spec at that price. I need to put it in writing about the garage conversion if there is any dispute.