Dricoat Help????????????????

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dode123

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My partner and I are complete novices when it comes to diy, the flat pack wardrobe causes us no end of problems.
We are looking to buy a new house. But damp readings mean that it needs a DPC and we obviously want to keep costs down so would like to do the prep work and finishing D.I.Y style. The survayor told me that we must use dri coat and if we dont, the guarantee will be void and we wont get the retention back from mortgage lender.
The walls are off a sandstone construction and behing the lathe and plaster which is starting to fall off, it looks like a dry stane dyke. So cant plaster straight on to it.
This is what we expect we will have to do and the order I have to do it in. (please excuse my terminology, its the best I could do)

Step 1 = Rip off all lathe and plaster to external walls and up to 1m of hardwall plaster on internal walls
Step 2 = Get DPC done
Step 3 = Hang waterproof membrane to external walls
Step 4 = Erect baton frame for new plasterboard
Step 5 = New plasterboard on batons
Step 6 = Plaster the plasterboard with dri coat plaster and plaster the hardwall plaster where chipped off
Step 7 = Let dry and redecorate

Now im fine with steps 1+2 but do not know I have the correct order of events after that. Have I missed anything or got anything wrong.

Any advice or help on the subject will be greatly appreciated.
 
Sorry Im no good at describing these things.
The inside of the external walls is lathe and plaster, the walls on the inside of the house is a mix of lathe and hardwall.
And No we dont plan on going below ground level as its concrete floors, but were advised to put a membrane on the "inside" of the external walls from ceiling to floor to protect the insulation and new plasterboard???? I have never done anything this big and although we will probably in the end get a local plasterer in to apply the plaster (Neither of us can apply polyfiller without making a pigs ear of it) we still need to buy in the supplies as cheaply as we can.
Thanks
 
One 'resident ' expert on this virtual site would recommend you inject these lathe and plaster walls with anti rising damp medicine. However this resident expert is not a plasterer. Where in the country are you because there will be someone close to you who can give localised advice
 
Whats the external wall thickness
Is there a cavity
How much lower is the external ground level compared to concrete floor surface
Re;membrane is damp proof company a small outfit? This is a strange specification.
 
sliemasteve said:
Whats the external wall thickness
Is there a cavity
How much lower is the external ground level compared to concrete floor surface
Re;membrane is damp proof company a small outfit? This is a strange specification.
Click to expand...


If its lathe and plaster there will be a cavity. DOH
 
We are near Dumfries, Scotland. The company who do the DPC supply the guarantee as long as we finish to the correct standard and quality they specify, which in part im sure is fair as cheap and nasty finishes may not stop salt coming back through the plaster but on the otherhand if the DPC is any good shouldnt it do the job on its own without fancy expensive finishings? I dont know im lost in the jargen
 
irish_spread said:
One 'resident ' expert on this virtual site would recommend you inject these lathe and plaster walls with anti rising damp medicine. However this resident expert is not a plasterer. Where in the country are you because there will be someone close to you who can give localised advice
Click to expand...

It was only this morning when I was last plastering (rendering actually) thus I am a plasterer.
 
If its below ground level then tanking/membrane will work. Ask an experienced local plasterer to have a look mate, not a 'rising damp scam' firm. Trust me, I have nothing to gain out of this
 
They are one of the biggest damp specialists in the area, and have branches across the country. The external ground level is about a metre below the joists (at its deepest point) possibly only 30cm at its closest point. does that make sense? I think the external wall thickness is around 6 inches.
I thought if we put a membrane on the wall, any moisture behind it would run down the sheet and pool at the bottom or get into the insulation and absorb up that way? im either very thick or poorly educated probably just both i expect.
 
dode123 said:
We are near Dumfries, Scotland. The company who do the DPC supply the guarantee as long as we finish to the correct standard and quality they specify, which in part im sure is fair as cheap and nasty finishes may not stop salt coming back through the plaster but on the otherhand if the DPC is any good shouldnt it do the job on its own without fancy expensive finishings? I dont know im lost in the jargen
Click to expand...

The company who do the DPC shouldn't be recommending a membrane if they are 'installing a DPC' absolute rubbish
 
I think I will get the keys back of agents and get more guys in, as this mob who were out didnt make much sense (hence im on here picking brains)
Its all a bit much for my wee head. lol
 
A damp company will only look for the most expensive way .and not always the best way ,as Irish said find a local plasterer
 
dode123 said:
We are near Dumfries, Scotland. The company who do the DPC supply the guarantee as long as we finish to the correct standard and quality they specify, which in part im sure is fair as cheap and nasty finishes may not stop salt coming back through the plaster but on the otherhand if the DPC is any good shouldnt it do the job on its own without fancy expensive finishings? I dont know im lost in the jargen
Click to expand...

keh? i wouldnt be giving you a guarantee unless i did all the work and im finding it hard to believe that they will either
 
keithuk said:
A damp company will only look for the most expensive way .and not always the best way ,as Irish said find a local plasterer
Click to expand...

With respect. This is not true. I have tested damp proofing companies in this regard. Most diagnosed wrongly but three out of the sample reported back to say no work necessary
 
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