On Tuesday, July 5, 2011 at 4:43:14 PM UTC+10, Lobster wrote:
While fixing up the workshop, I've painted the bottom 18" of the back
internal wall with Aquaseal black bitumen paint in an effort to prevent
damp coming through (the construction is slightly complicated to explain
- the bottom of it is a concrete pad which is next door's [somewhat
higher] ground level, so it's a bit susceptible to damp).

Anyways, next up will be to paint the rest of the walls and floor, and
I'd quite like to overpaint the bitumen area at the same time, just for
cosmetic reasons. I emailed the mfr for recommendations on what to use,
and was advised: "our bitumen paint range cannot be over painted with
any paints that I am aware of as they bleed oils when heated up. The
only way to find out would be by contacting a paint manufacturer as they
may have something that we at Everbuild are unaware of".

So, any suggestions?! Do we reckon stain-block paint would do the
trick, or is bitumen paint too much for it to handle? I don't want to
waste my time overpainting it if it's going to bleed through anyway; it
would look worse than just leaving it... it's only a workshop after all!

Thanks
David

Ty,

A lot of the comments are irrelevant. There are two types of bitumen paint: oil based and water based. Oil based bitumen paint is difficult to get today.

Make it clear in you comments what type you are talking about. They are two entirely different paints.

On Saturday, 12 January 2019 14:18:21 UTC, wrote:
On Tuesday, July 5, 2011 at 4:43:14 PM UTC+10, Lobster wrote:

While fixing up the workshop, I've painted the bottom 18" of the back
internal wall with Aquaseal black bitumen paint in an effort to prevent
damp coming through (the construction is slightly complicated to explain
- the bottom of it is a concrete pad which is next door's [somewhat
higher] ground level, so it's a bit susceptible to damp).

Anyways, next up will be to paint the rest of the walls and floor, and
I'd quite like to overpaint the bitumen area at the same time, just for
cosmetic reasons. I emailed the mfr for recommendations on what to use,
and was advised: "our bitumen paint range cannot be over painted with
any paints that I am aware of as they bleed oils when heated up. The
only way to find out would be by contacting a paint manufacturer as they
may have something that we at Everbuild are unaware of".

So, any suggestions?! Do we reckon stain-block paint would do the
trick, or is bitumen paint too much for it to handle? I don't want to
waste my time overpainting it if it's going to bleed through anyway; it
would look worse than just leaving it... it's only a workshop after all!

Thanks
David

Ty,

A lot of the comments are irrelevant. There are two types of bitumen paint: oil based and water based. Oil based bitumen paint is difficult to get today.

Make it clear in you comments what type you are talking about. They are two entirely different paints.

Most of mine is paraffin & bitumen. You can always make that if you buy bitumen. I'm told you can get 25l drums of bit from builder's suppliers (not diy sheds).


NT