damp - downstairs toilet resolution

[gazdkw82]

Iv decided its time to sort my downstairs toilet out. Its wall pappered and it has damp all around the back wall under/around the sink and toilet.

our house is 1930's so its not cavity wall. the toilet is situated at the front corner of the house next to the front door which is north facing.

Im planning to take the plasterboard off and see what the situation is with the bricks/damp/floor etc. the floor is tiled and I believe is a solid concrete base.

If I see no signs of big problems then i'm going to guess its just rising damp from a north facing non cavity wall together with a tiled floor and unventilated small toilet room.

I plan to fit maybe an insulated plasterboard (10mm orbry board) and then tile ontop. I plan to fit a lino to the floor.

My question is.... what other checks could I do to understand the damp more?

Would a heated floor help? defo an extractor fan? wall vents?

Thanks

 

[Andy78]

Ventilation can help, but is usually not a single solution. There are reasons why there are specialists in this field of work, it's not always straightforward.

I have heard of good results with dryzone, it's a DIY injectable damp proof course that comes in at a fraction of the cost of a professional job, but at the end of the day it won't be a professional job.

 

[Andy-1960]

When they built houses of this vintage they did not believe in damp proof membranes. My sister has a house built around the same time and they laid the kitchen quarry tiles directly onto the ground with no membrane.
This has been ripped up and a proper membrane and screeded floor put down, this couple with the wall being injected with a damp proof course = no more damp!
I think it is better to cure than cover it up.

 

[gazdkw82]

ok.

Ill check the floor for a DPC. If it doesn't have one im sure I can put one down. Its only a very small room.

As for wall injection, the drywall system does look good and the reviews are decent plus its not expensive

 

[Devonchris]

Check the toilet or sink is not leaking or that it's not condensation dripping off the cistern.

 

[telectrix]

go to specsavers first. then your aim might improve.