How to fill a large hole at the bottom of a wall.

[UKBernie]

Good morning all

I have to admit to being a novice when it comes to DIY of any sort so please be gentle with me!

I bought a house a few years ago. About 5 years ago my next door neighbor renovated his house & extended his kitchen. Where he extended his kitchen - the wall backs onto to my garden. This wall has left a large hole at the bottom that was left unfilled/unfinished. I am on good terms with my neighbor and I have to admit to never getting around to asking him to do something about it. My laziness!

My neighbor is now selling and moving sadly and I cannot imagine the eventual buyer will be willing to do anything about it. I have dropped my neighbor a note asking him to pop around to have a look but after 5 years he may not be willing to put it right. So, I may attempt to do it myself. I have attached a picture of the said hole.

Any advice would be very much appreciated.

Peace all!

 

[Harry Bloomfield]

Mix up some concrete and pop it in, settle the concrete under the wall so there are no voids. Finally, level it off with a float.

 

[opps]

I can't workout what is going on there, but it might be worthwhile pointing out that a surveyor might red flag it

Mix up some concrete and pop it in, settle the concrete under the wall so there are no voids. Finally, level it off with a float.

If it is a cavity, won't the concrete just keep pouring away?

 

[UKBernie]

Thank you for the replies. As the property is being sold the buyer would use a surveyor so I can imagine a hole as large as this would be a concern.

I will "Google" what a float is. I will investigate the hole further and see just how deep and far it goes.

Thanks again.

 

[opps]

A float is also known as a finishing trowel

Minotaur Finishing Trowel

This straight edge finishing trowel from Minotaur is a sturdy tool for plastering walls. The handle is welded to the blade on a thick rod to give you some flexibility when applying a lot of pressure. The rubber grip lets you get a firm hold when prying it out of wet plaster or running it along a...

www.toolstation.com

 

[noseall]

Mix up some concrete and pop it in, settle the concrete under the wall so there are no voids. Finally, level it off with a float.

.....after a week of filling, once the neighbour's cellar is full.

 

[Harry Bloomfield]

.....after a week of filling, once the neighbour's cellar is full.

Rather unlikely - the extension builder just appears to have left the OP's side unfinished. There are no obvious cracks in the wall, so it is properly supported, and it seems very unlikely a cellar might have been dug, under an extension don't you think?