Advice on painting an external wall...

[harmonia]

I am going to paint the front of my terraced house this weekend since our builder has partially re-rendered it. Tomorrow I will purchase a emulsion based masonry paint for the job (probably Johnstone's Stormshield , Crown Stronghold, or Sandtex trade) but can anyone just confirm a few questions below:-

- There is still some old paint on the top part of the wall, what is the best way to remove it? I am thinking to buy a steel brush and take it off with elbow grease. Is it OK to simply paint over it with the new undiluted emulsion if I can't remove?

- For newly rendered part of the wall I intend to dilute the paint 20% for the first coat and then use it neat on the second. Correct?

- Should I just use rollers to apply the coats - is this the best tool for the job. How many coats is enough?

thanks for any advise

adam

 

[gcol]

Use a wide blade scraper to remove loose paint. If the paint is well stuck, leave it alone and paint over it.
Everything else sounds fine. Use a roller and you'll need 2 coats on the new render.

 

[jamiller]

when should you use stabilising solution on an exterior wall? In the situation above, would just a wash down prior to paint be ok.

 

[gcol]

You'd use a stabilising solution when the wall was dusty or sandy. If it's sound don't bother.

 

[Growler]

I use a scientifically tried and tested method, to test whether to stabilise existing paint, that's served me well.

Here it is:


Wet finger with tongue - dab onto paint surface - watch closely to see if it sinks in quickly.
If it does, stabilise it, if it lies on top .........paint it.

 

[Zampa]

I use a scientifically tried and tested method, to test whether to stabilise existing paint, that's served me well.

Here it is:


Wet finger with tongue - dab onto paint surface - watch closely to see if it sinks in quickly.
If it does, stabilise it, if it lies on top .........paint it.

I used to have an easier method...

I got the apprentice to lick it