Laths v Plasterboard - using professional plasterer

[KenGMac]

I regularly get water damaged old L&P ceilings in [generally] Tenement flats where the ceiling has to be removed, that is the old lime horsehair plaster AND the laths !! i always specify a double board of plasterboard, not simply for the fire separation aspect, but to account for the thickness of the old plaster.

For several years, I worked in listed property, all owned by the Government, traditional L&P was a really, really scarce to find as a material of choise when renovating, L&P was never replaced on a like for like basis, Plasterboard was the go to option.

I did have one domestic flood damaged property where the owner demanded L&P be replaced on a like for like basis then complained long and loud because of a three to four month wait for the plasterers to complete the L&P aspect of the work.

Ken

 

[roughcaster]

I have plastered onto wooden laths, ( ceilings, walls and patches() many a time with bonding coat and then multi finish, never had a problem at all.

 

[Possom]

I have plastered onto wooden laths, ( ceilings, walls and patches() many a time with bonding coat and then multi finish, never had a problem at all.

Is that using regular plaster (or lime)? If regular plaster, what would the wait time be between coats for a wall (not a repair area)? Thanks.

 

[Deleted member 292770]

I have plastered onto wooden laths, ( ceilings, walls and patches() many a time with bonding coat and then multi finish, never had a problem at all.

whole lath ceilings?

 

[roughcaster]

whole lath ceilings?

whole lath ceilings, but not big ceilings. Prep, then set Dots, string lines, straight edge, screeds, then first coat, scratch, let it go off, then second coat, then multi finish. Each lath ceiling or wall was always sealed before being coated, to cut down suction, pva/bonding coat slurry, worked perfect for me.
Not the same as lime plaster, but it worked.

 

[roughcaster]

This was all onto wooden lath.

 

[roughcaster]

Also, you would NOT do it this way on a listed property.

 

[KenGMac]

Found this calculator for lime Plaster?

https://www.lime-mortars.co.uk/lime...te?method=area&area=50&wallLength=&wallHeight

Ken