What undercoat colour for painting Monument on Cedar walls?

[Janina1]

I have indoor cedar walls with an old oil stain on them. I want to paint them in Colorbond Monument.  I was given a tin of white  3 in 1 undercoat at bunnings. On the can of monument paint, it says that the undercoat should be tinted to monument color or similar,  to get best results.  Should I use the white one I was told to use, return it, or have it tinted? Thankyou.  

[Jewelleryrescue]

Hi @Janina1 

Ideally the undercoat color will be a darker base  shade for darker colors. As  lighter color  want light bases.

Option  

1  Tint the  white 3in 1 at the shop  darker will save you painting extra paint layers.   I think  you must tint it as I  am not sure if three in one has base colors

2 Use the white under coat 3 in1 as it is.  For the monument all you need to do is paint 3 coats instead of  2  coats to gain the full monument color ( 2 coats may lighten the monument color a degree or two. )  So the extra coats covers over the the lighter shade of monument will give you good strong color  results as you wanted.

Either way you will get a  good  job  done.

[Janina1]

Thankyou 🙏