Hi all
looking for a bit of advice on this. I want to get some paint on sealant for the outside walls of the house.
I've found Thompsons waterseal on Amazon. Any good? Any idea how much coverage I'd get from each 5L tin?
cheers
Mal
looking for a bit of advice on this. I want to get some paint on sealant for the outside walls of the house.
I've found Thompsons waterseal on Amazon. Any good? Any idea how much coverage I'd get from each 5L tin?
cheers
Mal
In reply to Post #1
Be very careful!
If you have moisture coming from outside this stuff can help, but, and it's a big but, it can also stop moisture from within breathing through the wall. If your walls are cold to the touch you will get condensation on them which should breath through the wall, this stuff can cause it to build up and cause a bigger damp problem.
Lots of situations where it's fine but also lots of situations where it does more harm than good
Be very careful!
If you have moisture coming from outside this stuff can help, but, and it's a big but, it can also stop moisture from within breathing through the wall. If your walls are cold to the touch you will get condensation on them which should breath through the wall, this stuff can cause it to build up and cause a bigger damp problem.
Lots of situations where it's fine but also lots of situations where it does more harm than good
In reply to Post #2
Ah right..
that's definitely worth knowing as that was the problem.
so - that in mind, how can i tackle the damp inside caused by condensation?
thanks
mal
Ah right..
that's definitely worth knowing as that was the problem.
so - that in mind, how can i tackle the damp inside caused by condensation?
thanks
mal
In reply to Post #3
Best off finding the cause of the condensation first.
Are you doing anything that's putting dampness into the air such as drying clothes over radiators, shower/bath without an extractor fan, boiling pots and pots of lentils? Maybe your house is too air tight, maybe open a window?
We get condensation on the north facing side windows of our house in the winter but not this time of the year, we use a dehumidifier.
Best off finding the cause of the condensation first.
Are you doing anything that's putting dampness into the air such as drying clothes over radiators, shower/bath without an extractor fan, boiling pots and pots of lentils? Maybe your house is too air tight, maybe open a window?
We get condensation on the north facing side windows of our house in the winter but not this time of the year, we use a dehumidifier.
In reply to Post #4
...lentils....
to be honest, I can't figure it. done all the obvious condensation related stuff - open windows etc. the walls are old, thick stone. that's why i thought it might need some waterproofing on the outside...
...lentils....
to be honest, I can't figure it. done all the obvious condensation related stuff - open windows etc. the walls are old, thick stone. that's why i thought it might need some waterproofing on the outside...
In reply to Post #5
If it's thick stone I don't think Thomsons will help. That stone will be naturally cold so when warm moist air hits it will turn to moisture.
Generate as little moist air as possible, consider insulating the inner face of the walls, or use a dehumidifier as mentioned.
Is it all over the house? I've heard of Positive Pressure Ventilation Systems, maybe someone on here has any experience?
If it's thick stone I don't think Thomsons will help. That stone will be naturally cold so when warm moist air hits it will turn to moisture.
Generate as little moist air as possible, consider insulating the inner face of the walls, or use a dehumidifier as mentioned.
Is it all over the house? I've heard of Positive Pressure Ventilation Systems, maybe someone on here has any experience?
In reply to Post #5
My place is solid brick with painted pebbledash so I had problems too, I ended up stripping the the walls back to brick, insulating and plasterboarding. It's the best long term solution I know but obviously costs a lot more than a pot of snake oil.
My place is solid brick with painted pebbledash so I had problems too, I ended up stripping the the walls back to brick, insulating and plasterboarding. It's the best long term solution I know but obviously costs a lot more than a pot of snake oil.
Cheers both 
It's just a couple of bits - lockdown fever got me looking for more diy jobs....
It's just a couple of bits - lockdown fever got me looking for more diy jobs....
In reply to Post #9
Nice one tinhead
Nice one tinhead
In reply to Post #9
Probably does the job but isn't cheap is it!
Insulated plasterboard is the way to go if you can lose room size I reckon, cost can be prohibitive with the thinner insulation products
Probably does the job but isn't cheap is it!
Insulated plasterboard is the way to go if you can lose room size I reckon, cost can be prohibitive with the thinner insulation products
Have a read on stormdry masonry protection cream. Goes on white, dries clear.
In reply to Post #11
If Mal is in a DIY mood then he might be able to put that paper up himself but maybe not the plasterboard especially if needs skimming?
If Mal is in a DIY mood then he might be able to put that paper up himself but maybe not the plasterboard especially if needs skimming?
In reply to Post #1
Render it
Render it
are the inside walls wet or just showing mould..