Water based Microporous paint
 

I bought a conservatory from Baltic Pine:

http://www.balticpine.co.uk/

and have assembled it without too much trouble. The problem is that
they say to use a solvent based microporous paint but I couldn't source
it anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(

Does anyone know why they say not to use water based paint e.g. acrylic
paint?
--

"Tony Raymonds" wrote in message
...
I bought a conservatory from Baltic Pine:

http://www.balticpine.co.uk/

and have assembled it without too much trouble. The problem is that they
say to use a solvent based microporous paint but I couldn't source it
anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(

Does anyone know why they say not to use water based paint e.g. acrylic
paint?
--


Why not ask Baltic Pine?

In article , John
writes
Why not ask Baltic Pine?

Because I had already put on a coat of water based acrylic before I
realised that it was meant to be solvent based, and I don't want to know
that I did that as it may have implications for the warranty.

If I can find some solvent based microporous paint I'll probably put a
coat on top of the acrylic, I assume it will stick OK.
--

Isn't water a solvent?

and have assembled it without too much trouble. The problem is that
they say to use a solvent based microporous paint but I couldn't source
it anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(

It should be easy enough to find. I believe International do some.

I ignored their requirement and painted with a solvent and water based
acrylic system (Dulux Weathershield) which consists of several layers.

1. Preservative primer (solvent)
2. Undercoat (solvent)
3. Acrylic satin top coat (water)

I don't like the appearance of oil based paints as they are too glossy and
I'm not convinced that they are much more durable than a quality water based
acrylic, although they are mechanically more tough. The preservative primer
first coat gives me more confidence in the system, too.

Christian.

The problem is that
they say to use a solvent based microporous paint but I couldn't source it
anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(
I'm not surprised. When these paints were all the rage in the 70s, it was
acknowledged that each coat reduced the microporosity, and a single heavy
coat did the same. At what point the paint ceased to be at all microporous,
nobody ever quite established.
If you want to play Baltic's game, International used to do a solvent based
version, but it was crap so I imagine they might have ditched it by now.
Anything made of softwood that faces south/ south west will have a limited
life, whatever you treat it with. I would go with an oil based paint
(eggshell if you don't like gloss). One undercoat and one topcoat on top of
your existing coat will give you the best chance.

On Wed, 09 Feb 2005 07:39:20 GMT, Tony Raymonds
wrote:

I bought a conservatory from Baltic Pine:

http://www.balticpine.co.uk/

and have assembled it without too much trouble. The problem is that
they say to use a solvent based microporous paint but I couldn't source
it anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(


Try a trade decorator centre, Crown, Dulux etc. (I should know the
answer to this but my mind has gone. The usual reason given for not
using water-based materials outside is that they will be more
susceptible to weathering.)

When these paints were all the rage in the 70s, it was
acknowledged that each coat reduced the microporosity, and a single heavy
coat did the same. At what point the paint ceased to be at all microporous,

Actually all paint is "porous" i.e. will transmit water vapour, and
"microporous" doesn't mean anything. For non porous you'd have to
think of bitumen+gold leaf etc. More paint means less porous but more
water proof.

Anything made of softwood that faces south/ south west will have a limited
life, whatever you treat it with.

Not so, what about those millions of bits of Victorian and earlier
joinery which are still in good nick although softwood? This is down
to good detail design (a thing of the past) and lashings of paint.
Lead paint helped of course, being better than anything modern.

I'd carry on painting with any good quality oil based paint having
first knotted with shellac.. The one essential is to go over it
carefully several times during the first few years and remedy any
defects. After everything has dried and settled etc the paint should
last 10 years or more before needing touching up again.

cheers

Jacob

In article , Stuart Noble
writes
If you want to play Baltic's game, International used to do a solvent based
version, but it was crap so I imagine they might have ditched it by now.

Baltic Pine recommended Sikkens or Sadolin but as far as I can tell
neither do a microporous solvent based paints, though they both do
acrylic, water based microporous paints.

I'm not sure but I think Baltic Pine have managed to put in an almost
impossible to satisfy requirement into their warranty! I wonder how
that would stand up if there was a dispute about it?

From the replies I've read it doesn't sound like I've done any real
damage to the conservatory though. I might just give the outside
another good coat of acrylic during the summer to make sure it's all
well sealed.
--

In article , Tony Raymonds
writes
I bought a conservatory from Baltic Pine:

http://www.balticpine.co.uk/

and have assembled it without too much trouble. The problem is that
they say to use a solvent based microporous paint but I couldn't source
it anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(

Ranch paint was International's name for its solvent microporous range,
still listed on the Focus site, limited colours though:

http://www.focusdiy.co.uk/invt/9000078

still listed on the international site too but searching for microporous on
their site doesn't find a hit, great huh . . .

Now away for a week, so no replies . . . .
--
fred

On Wed, 09 Feb 2005 07:39:20 GMT, Tony Raymonds
wrote:

I bought a conservatory from Baltic Pine:

http://www.balticpine.co.uk/

and have assembled it without too much trouble. The problem is that
they say to use a solvent based microporous paint but I couldn't source
it anywhere. I tried B&Q, Screwfix and Ridgeons without any luck :-(

Does anyone know why they say not to use water based paint e.g. acrylic
paint?

Hi,

If you have painted it already check to see if the paint is a decent
quality exterior paint. If not it almost certainly needs a coat of
something suitable to protect it from UV damage and weathering.

Sadolin do a range of wood stains which also come in opaque colours
including white. I think it's called 'Superdec' or something like
that.

In any case Baltic Pine and the likes of Sadolin etc have technical
support helplines who can help recommend the right product to use.

cheers,
Pete.

In article , Pete C
writes
If you have painted it already check to see if the paint is a decent
quality exterior paint. If not it almost certainly needs a coat of
something suitable to protect it from UV damage and weathering.

I used the Permaglaze MPV acrylic gloss paint, I've not idea whether it
his good quality or not (how does one tell?) but it does say it's
suitable for exterior use.
--

On Fri, 11 Feb 2005 08:08:12 GMT, Tony Raymonds
wrote:

In article , Pete C
writes
If you have painted it already check to see if the paint is a decent
quality exterior paint. If not it almost certainly needs a coat of
something suitable to protect it from UV damage and weathering.

I used the Permaglaze MPV acrylic gloss paint, I've not idea whether it
his good quality or not (how does one tell?) but it does say it's
suitable for exterior use.

Hi,

Sounds good, probably best just to recoat at the recommended interval.

cheers,
Pete.