I painted my last garage inside with the cheapest masonry paint from
Screwfix or Toolstation, was just in plain pots with their own labels
on it.

I am now looking to do the same again but I notice that I can get 9lts
of Dulux weathershield masonry paint in Costco for around £15 so would
be as well to get this.........

Thats if its ok to use, I seem to recall someone saying to me that you
have to be carefull when painting inside garages as the brick still
has to breathe or something along that lines...

Is this true or just a load of tosh.........its just your run of the
mill breeze block.

Any ideas, tips or info.

Also does it make much of a difference using stabilising primers or is
it best to horse it on.

On 2 Jun, 00:12, Gogs wrote:

I painted my last garage inside with the cheapest masonry paint from
Screwfix or Toolstation, was just in plain pots with their own labels
on it.

I am now looking to do the same again but I notice that I can get 9lts
of Dulux weathershield masonry paint in Costco for around £15 so would
be as well to get this.........

Thats if its ok to use, I seem to recall someone saying to me that you
have to be carefull when painting inside garages as the brick still
has to breathe or something along that lines...

Is this true or just a load of tosh.........its just your run of the
mill breeze block.

Any ideas, tips or info.

Also does it make much of a difference using stabilising primers or is
it best to horse it on.

Lme paint is £6 per quarter ton, and seems to last well. Mix bagged
lime into putty, let it soak overnight, keeping air off it, and dilute
50/50 for paint. It goes on very thin and bodies up over a day or so.


NT

On Jun 2, 12:12 am, Gogs wrote:
I painted my last garage inside with the cheapest masonry paint from
Screwfix or Toolstation, was just in plain pots with their own labels
on it.

I am now looking to do the same again but I notice that I can get 9lts
of Dulux weathershield masonry paint in Costco for around £15 so would
be as well to get this.........

Thats if its ok to use, I seem to recall someone saying to me that you
have to be carefull when painting inside garages as the brick still
has to breathe or something along that lines...

Is this true or just a load of tosh.........its just your run of the
mill breeze block.

Any ideas, tips or info.

Also does it make much of a difference using stabilising primers or is
it best to horse it on.

Masonry paint is fine. The breathing thing is kind of correct & can be
important if you've got a concrete structure with metal rods through
it (which can be subject to carbonation - do a google on this if you
want to know more). The other reason for allowing a surface to
"breathe" is to allow moisture vapour out, whilst protecting against
rain etc. Masonry paints should do this (e.g. http://www.sandtex.co.uk/microseal/).
In your situation, I wouldn't worry about it. The chances of getting a
continuous, non-breathing film when painting breeze blocks are next to
zero! Just think of all those holes!

Stabilizing primers are recommended on powdery surfaces - like plaster
or render. A powdery layer between the wall and your paint is not a
recipe for good adhesion. So, it all depends on your particular
surface.

www.diypaint.co.uk

diypaint wrote:
On Jun 2, 12:12 am, Gogs wrote:
I painted my last garage inside with the cheapest masonry paint from
Screwfix or Toolstation, was just in plain pots with their own labels
on it.

I am now looking to do the same again but I notice that I can get 9lts
of Dulux weathershield masonry paint in Costco for around £15 so would
be as well to get this.........

Thats if its ok to use, I seem to recall someone saying to me that you
have to be carefull when painting inside garages as the brick still
has to breathe or something along that lines...

Is this true or just a load of tosh.........its just your run of the
mill breeze block.

Any ideas, tips or info.

Also does it make much of a difference using stabilising primers or is
it best to horse it on.

Masonry paint is fine.

I thought you weren't supposed to use exterior grade paints indoors due
to fungicides or some other noxious substances they may or may not emit?
(And whether a garage would constitute 'indoors' I'm not sure...)

Personally I've painted the inside of a small single-skin breezeblock
building using standard interior emulsion and it worked fine.

david

David

On 2 Jun, 11:16, Lobster wrote:
diypaint wrote:

Masonry paint is fine.

I thought you weren't supposed to use exterior grade paints indoors due
to fungicides or some other noxious substances they may or may not emit?
(And whether a garage would constitute 'indoors' I'm not sure...)

thats right, and yes its an enclosed space. Some types such as water
based would be ok, but some would be too toxic.

Re breathability, asonry paints arent to any significant extent. They
pinhole, which is fashionably called 'microporous' but the degree of
damp evaporation ability is very low compared ot genuinly breathable
paints.

You'll probably be fine with unbreathables, but in some cases they do
cause damp build up and resulting problems. The lime paint mentioned
above is cheap, easy to apply and fully breathable.


NT

On Jun 2, 11:56 pm, wrote:
On 2 Jun, 11:16, Lobster wrote:

diypaint wrote:
Masonry paint is fine.
I thought you weren't supposed to use exterior grade paints indoors due
to fungicides or some other noxious substances they may or may not emit?
(And whether a garage would constitute 'indoors' I'm not sure...)

thats right, and yes its an enclosed space. Some types such as water
based would be ok, but some would be too toxic.

Re breathability, asonry paints arent to any significant extent. They
pinhole, which is fashionably called 'microporous' but the degree of
damp evaporation ability is very low compared ot genuinly breathable
paints.

You'll probably be fine with unbreathables, but in some cases they do
cause damp build up and resulting problems. The lime paint mentioned
above is cheap, easy to apply and fully breathable.

NT

Just remember to wear goggles and gloves - lime paints are not good
for skin & eyes.

exterior products use inside. Agreed, not generally advisable.
However, just check out the health & safety box on most masonry paint
vs standard interior emulsion - not too scary is it! Recent
regulations have restricted the use of the most nasty additives. Plus
the biocides used are designed to stay in the film - if they didn't
they wouldn't protect the paint!

On 3 Jun, 21:12, diypaint wrote:
On Jun 2, 11:56 pm, wrote:

Just remember to wear goggles and gloves - lime paints are not good
for skin & eyes.

Its the same as cement in terms of skin irritation. Its the lime in
cement that does the irritating.

exterior products use inside. Agreed, not generally advisable.
However, just check out the health & safety box on most masonry paint
vs standard interior emulsion - not too scary is it! Recent
regulations have restricted the use of the most nasty additives. Plus
the biocides used are designed to stay in the film - if they didn't
they wouldn't protect the paint!

Sure, many are fine, but some are truly dangerous, so not an approach
thats wise unless the user properly understands the issue(s)


NT