What am I?

[DSC]

Hi all,

Just in process of stripping old paint / plaster from 1870 brick wall.

Any idea what the red layer is made of?

The wall appears to be holding damp in some patches. Would it be recommended to strip it all back?

Thanks!

 

[Deleted member 32554]

Hi all,

Just in process of stripping old paint / plaster from 1870 brick wall.

Any idea what the red layer is made of?

The wall appears to be holding damp in some patches. Would it be recommended to strip it all back?

Thanks!

No clue but suspect a waterproof paint as it's solid wall ( attempt to stop damp )
If it comes off easy then do it , you may find soaking the exposed areas will delaminate the surrounding paint easier

The question is what are you putting on top

 

[ChrispyUK]

Strip it back and let the dog see the rabbit.

If its an external wall, check outside for correct ground levels, dodgy drains/downpipes, dodgy pointing or anywhere where water could be getting in. Chances are you've got penetrating damp and gypsum plaster.

 

[DSC]

No clue but suspect a waterproof paint as it's solid wall ( attempt to stop damp )
If it comes off easy then do it , you may find soaking the exposed areas will delaminate the surrounding paint easier

The question is what are you putting on top

Thanks for the reply. The red part has a fibrous type texture so maybe waterproof paint on another layer.

Was either going to strip it all back and find someone to lime plaster it (hard to find in Sydney it seems). Wary of opening up a Pandora’s box of issues for a wall the was in reasonable condition to start with though.

Other option was to stop stripping plaster, fill the gaps and gyp plaster coat

 

[Deleted member 32554]

@BigBruvOfEnglandUK is in Melbourne
That's on your doorstep in Oz lol

What's the job , out building , palace
A single wall , room

Gypsum is no good if you heat the room or have no damp course unless you foam dab thermal plasterboard

 

[The Hobo]

Hi all,

Just in process of stripping old paint / plaster from 1870 brick wall.

Any idea what the red layer is made of?

The wall appears to be holding damp in some patches. Would it be recommended to strip it all back?

Thanks!

covid 19?

 

[DSC]

@BigBruvOfEnglandUK is in Melbourne
That's on your doorstep in Oz lol

What's the job , out building , palace
A single wall , room

Gypsum is no good if you heat the room or have no damp course unless you foam dab thermal plasterboard

It’s the internal shared wall of a terrace house. Likely the wall opposite would have the same setup / issues if I peeled it back.

 

[Deleted member 32554]

It’s the internal shared wall of a terrace house. Likely the wall opposite would have the same setup / issues if I peeled it back.

You don't mention any issues with the skirting area so assume damp course is ok so gypsum is ok , float and set or dot and dab then skim for which you should have no problems with sourcing a tradesman
Only issue is cold bridging junction meeting with external wall so it depends on your climate , may be nothing to worry about as no current issues mentioned on those walls
If you go for foam dabbed sound block plasterboard ( with fire fixings ) and leave a cm gap to junction meeting walls ( filled with foam ) and skim will improve noise transfer at the same time

 

[Deleted member 32554]

No need to strip the wall completely , just take out the vertical mortar joints , dampen , fill with foam , mist back of plasterboard with water and gently press board level , boards packed off floor with lumps of wood to an inch of skirting height . Once skimmed scratch the back , prime all and gloss front of skirting then foam exposed wall , bead of no nails to top rear of skirting , water mist the rest and press into place
After initial foam expansion it will still expand a small amount so check , hold in place with straight edge
Misting the dry surface that's being pressed into expanded foam addy reactivated it and gives a better bond
Always leave gaps with the foam or it will push your skirting off the wall and you will struggle to get it back in position