Raised Patio - 150cm high

[Mrc1903]

Hi looking for some opinions, we’re building a raised patio area 5ft high as we’ve had window replaced at the back of the house replaced with sliding doors. The drop is just over 5 feet.

The builder has suggested the best way to do this is, as per the picture, rows of walls - breeze blocks - with a wall as the facing, I hardcore or anything g to be used and then just lay concrete council slabs on top, before laying the slabs of our choice on top of those, likely sandstone.

They say this is better than adding crushed stone and compacting. The walls are built on a base of concrete and he plans to add an air brick for ventilation, there’s also an air vent on the external wall of the property but not visible in the pictures.

Is this a safe and acceptable way to build the patio up? Having thought about it and researched online I can’t find anything which recommends this type of build for a similar project.

Cheers

 

[Notch7]

I would’ve thought a block and beam floor would be the easiest method. Yes you can do what he says using concrete lintels but I’m not sure it would be cheaper and a block and beam floor is designed to do what you want.

Why not have doors at the end for storage, instead of a solid wall.

By the way you will need balustrading, which will need to be compliant to building regs part K

 

[Mrc1903]

He’s not suggesting to use concrete lintels - just the 5 rows of bricks and then all the slabs bonded on top

 

[stevie888]

I think it will work ok as proposed, but the look??

I agree with Notch: do the job properly and get a useful store

 

[Mrc1903]

Thanks. What would you recommend for drainage? Worries about water ingress and damp with the walls being built so close to and adjacent to the wall.

Currently no plans for a drain just that everything is built with a slight slope away from the property. There’s an air vent at the bottom of the property which is suspended with around 4 feet of crawl space underneath also due to be a vent on one of the facings of the steps

 

[freddiemercurystwin]

Unless you're planning a proper waterproof system then I would forget using it as a store at least for anything that will be susceptible to damp damage, it’ll be a damp and cold environment even with a waterproof lid, anyway that aside is the photo you’ve posted an example you’ve found off the web or what your builder has done so far? If that’s just an example photo then what size is this patio you’re proposing?

I’m gonna be ‘that guy’ and mention planning permission for raised decks/patios.

 

[blup]

Hi looking for some opinions, we’re building a raised patio area 5ft high as we’ve had window replaced at the back of the house replaced with sliding doors. The drop is just over 5 feet.

The builder has suggested the best way to do this is, as per the picture, rows of walls - breeze blocks - with a wall as the facing, I hardcore or anything g to be used and then just lay concrete council slabs on top, before laying the slabs of our choice on top of those, likely sandstone.

They say this is better than adding crushed stone and compacting. The walls are built on a base of concrete and he plans to add an air brick for ventilation, there’s also an air vent on the external wall of the property but not visible in the pictures.

Is this a safe and acceptable way to build the patio up? Having thought about it and researched online I can’t find anything which recommends this type of build for a similar project.

Cheers

Looks ok just protect from damp

 

[Mrc1903]

Looks ok just protect from damp

Thanks. Any recommendations on how to protect from damp?

 

[blup]

Thanks. Any recommendations on how to protect from damp?

I mean protecting the main house from damp in the deck bearing wall, but it may already be sufficiently below dpc level