Stud partition wall with slatestone infill - rot at bottom of studs - remediation

[Fallingditch]

Renovating an 1850 stone built house.

 

 

We are removing a stud partition with with slatestone infill wall between kitchen and dining room.  We hired an SE, so we have a spec for steelwork etc. (We will also be digging up the floor, insulating it and laying a new slab with UFH).

 

Upon removing the infill, we found rot at the bottom 200mm - 400mm of the studs (overall 2750 long by 125 x 50)

 

 

 

and again:

 

 

 

So here's the question.  While this wall running EW will be removed, two other walls running the width of the house 6m NS (enclosing the entrance hall) will remain.  We werent going to touch them, but it seems highly likely that they will have exactly the same problem, and if you are digging up floors, that's the time to address the problem.  

 

So how to remediate? These timbers might be 175 years old, but the upper 2.3m (say) appears in good condtion still, so it should be possible to keep the majority of the wall and to repair the lower section only?

 

Suggestions please?

 

 

 

 

 

 

 

 

 

 

 

[markc]

Will the timbers be visible? Or are you boarding over?

[Fallingditch]

Boarding over definitely (or retaining existing lime plaster and making good).

[Hobbiniho]

if they are structural you will probably have to "sister" new studs alongside them and bolt through but would need the input from a structural engineer, if not structural then just cut the bottom off and scarf new bits on if you cut the angle shallow enough and use plenty of glue and screws they will be plenty solid enough for a partition wall 

[Fallingditch]

On 24/02/2023 at 07:35, Hobbiniho said:

if they are structural you will probably have to "sister" new studs alongside them and bolt through but would need the input from a structural engineer, if not structural then just cut the bottom off and scarf new bits on if you cut the angle shallow enough and use plenty of glue and screws they will be plenty solid enough for a partition wall 

In fact, what we did was to cut away the rotten section, screw in a stud, put a temporary shutter around it and then and then cast a new concrete 'foot' to support it - seems like a good solution to me.