Subsidence measurements ?

[Andrew]

Homes under the Hammer, (or could have been Kirsty and Phil), did a program about a house in Sheffield with many large trees around the house and some nasty subsidence cracks and destroyed drains.

They bought it, persuaded the council to allow some trees to be removed (conservation area), replaced all the drains and over the next 12 to 18 months, all the filler used to hide the internal cracks got squeezed back out as the soil under the house assumed its original water content that the tree roots had sucked out, and the ground heaved back up.

[Andrew]

Having watched many programs of Homes under the Hammer, plus Kirst and Phil, the message seems to be, if a crack on an outside wall also occurs on an internal wall in the same spot, or if it goes diagonally down a wall, it could be serious.

If just a door frame is moving, could it be the slab at fault ?. Lots of houses were built using power station ash as part of the concrete used to pour slabs and these can chemically interact with the soil.

Any trees nearby ?, or evidence of sinking, tilting paths that might indicate a broken drain ?.

[George Miles]

there's a right angle sofa at the downhill corner, drunks gravitate to it..

[g]

[George Miles]

A surveyor came round last week and said we could inject foam under the house.

The geobear website says its wonderful, but they would, wouldnt they.

"Thanks to the advanced nature of Geobears?s solutions, buildings don?t always have to be lifted to be repaired. In some cases, a number of very small sized holes can permit geopolymer resins to be injected through floor coverings and finishings should lifting not be a feasible or necessary option."

Any experiences of this?

George

[harry]

No experience but sounds iffy to me. Is the building still moving? Quite often they move and then stop. It's important to monitor what's happening. Did you glue glass telltales over the cracks?

You need to get advice from other sources. You need to speak to previous customers of this firm. Also check with your neighbours if they have any history and the cures.

[Andy Burns]

How many canoesworth?

[Vir Campestris]

Needs the link for the uninitiated.

Andy

[charles]

excellent