When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Rednadnerb wrote:
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

The bond between the wood and the first coat of whatever is on there has
to be good. The rest is really just decoration

"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

On 4 Oct, 13:48, "Roger" wrote:
"Rednadnerb" wrote in message

...

When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

It seemed like a good idea at the time.

Roger wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

Why be a **** if you do not know why you are doing it?


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

Rednadnerb wrote:
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?


Rednadnerb,

Paint specification from an AKZO rep on external paintwork (preparation and
priming assumed to be done) for longevity:

2 undercoat and 1 gloss coats

OR

1 undercoat and 2 gloss coats

But always remember that it's the preparation that gives the longevity on
any paintwork - if that is poorly done, then the finished coats will simply
not last.

Cash

On Sun, 4 Oct 2009 05:24:33 -0700 (PDT), Rednadnerb wrote:
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Well, it gives your paintwork an extra thickness, so that would help
it survive _external_ factors. Just so long as the underlying adhesion
between the wood and the paint is sound, so it doesn't flake off then
it sounds like a reasonable idea.
After all, we know from expereince that the perparation takes longer
than the painting, so if an extra coat extends the lifetime of the work
by prportionally longer than a strip / prepare / repaint would, then
it's a worthwhile investment in paint and time.

"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

If you are painting new wood or over very weathered old paint, consider
"Ranch Paint", which is microporous.

I used it on well weathered paint several times (having removed the flaky
bits and rubbed it down). Worked a treat and didn't "peel". From past
experience, ordinary undercoat and gloss would have.

Ranch paint isn't cheap but you don't need an undercoat and the finish is
good- albeit satin rather than gloss.

Probably not good over good old paint as you'd have to do some serious
sanding.

Brian

Stuart Noble wrote:
Rednadnerb wrote:
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

The bond between the wood and the first coat of whatever is on there has
to be good. The rest is really just decoration

I strongly disagree.

After a lot of experience in painting wood, I came to the conclusion
that what painting does, is pretty specialised, and goes like this.

1/. Knotting. This stabilises the wood and prevents resin creeping under
the paint.

2/. Filling removes major imperfections.

3/. Priming mainly has to stick to the wood, and provide a key for other
coats.

4/. Filler primer gets rid of grain and other minor imperfections

5/. undercoat is there to provide the base colour and reflective coating.

6/. Top coat is there to fine tune the colour, and to provide a tough
surface to protect what is below. On cars, you often see that as a clear
lacquer, with the normal paint actually being the 'undercoat'.


Now in an outdoor situation, if the top coat gets compromised the
underlying coats will fail. Typically UV attack splits the top coat, and
water gets into the wood dwells it and splits the paint off.

IF - and its not certain - a second coat of top will retard UV attack,
or maybe a coat of UV resistant lacquer will stop it getting to the
gloss, its well worth putting ion.

One of the fundemental principles of exterior painting is to repaint
before the original starts to crack thus maintaining the protection.

Brian Reay wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

If you are painting new wood or over very weathered old paint, consider
"Ranch Paint", which is microporous.

I used it on well weathered paint several times (having removed the flaky
bits and rubbed it down). Worked a treat and didn't "peel". From past
experience, ordinary undercoat and gloss would have.

Ranch paint isn't cheap but you don't need an undercoat and the finish is
good- albeit satin rather than gloss.

Probably not good over good old paint as you'd have to do some serious
sanding.

Brian



If you go to the trouble of sanding back to bare wood, wood hardener is
the thing to use. After that, any paint goes on like a dream and tends
to stay there

On Sun, 04 Oct 2009 23:25:55 +0100, The Natural Philosopher
wrote:


Now in an outdoor situation ...

... use something other than wood. ;-)

Don't get me wrong, wood is fine outdoors for trees and bonfires but I
would love to get rid of it's use here outdoors asap.

30+ years ago I moved here and put up a new paneled fence. The second
set of panels are showing their age whilst the concrete posts look as
good as the day I planted them. Rather than replacing the 6" square
gate posts for the third time I have a pair of steel ones in the
garden ready to go in. The uPVC windows haven't had a lick of paint
(or much attention of any kind for that mater) in the 15 or so years
they have been in. I just wish I'd made the picket fence out of solid
plastic board or steel rather than wood when I replaced that a few
years back.

I wish I'd had plastic soffits when we had the extension and windows
done back then. One less thing to have to waste time, effort and money
on (knowing it will all have to be done again a few years later).

Wood does have it's purpose though ... it makes nice furniture. ;-)

Cheers, T i m

"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?


better to do one of primer, 2 undercoats (the build) and one top

On Sunday, 4 October 2009 14:26:08 UTC+1, The Medway Handyman wrote:
Roger wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

Why be a **** if you do not know why you are doing it?

Why be so rude?

--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

wrote in message
...
On Sunday, 4 October 2009 14:26:08 UTC+1, The Medway Handyman wrote:
Roger wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

Why be a **** if you do not know why you are doing it?

Why be so rude?

I found that two coats of gloss were essential with our front door. The
previous paint had weathered and peeled in places. No matter how much I
sanded the paint smooth, the boundary between the different layers of paint
where the top coat either has or has not peeled off, showed as a white
hairline in the newly-applied paint, especially since the paint was dark. It
was necessary to give that new paint a light sanding and then apply a second
coat over the top on the affected panels of the door.

I could have stripped off all the paint back to the bare wood, primed and
undercoated it and then put on a top coat, but that is a major job given
that the door has a lot of fiddly moulding which would have been a pig of a
job to get all the paint off the crevices.

In article ,
wrote:
On Sunday, 4 October 2009 14:26:08 UTC+1, The Medway Handyman wrote:
Roger wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually
go over the areas that are heavily exposed to rain and sun with a
second coat of gloss. But i've never actually read anywhere that
this will prolong the life of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

Why be a **** if you do not know why you are doing it?

Why be so rude?

Why are you replying to a post 8 years old?

--
*If all the world is a stage, where is the audience sitting?

Dave Plowman London SW
To e-mail, change noise into sound.

Why bring up 2009 posts in the first place yawn.
Brian

--
----- -
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
wrote in message
...
On Sunday, 4 October 2009 14:26:08 UTC+1, The Medway Handyman wrote:
Roger wrote:
"Rednadnerb" wrote in message
...
When painting outside woodwork with undercoat and gloss I usually go
over the areas that are heavily exposed to rain and sun with a second
coat of gloss.
But i've never actually read anywhere that this will prolong the life
of the paintwork. Am I wasting my time?

Why do something if you do not know why you are doing it?

Why be a **** if you do not know why you are doing it?

Why be so rude?

--
Dave - The Medway Handyman
www.medwayhandyman.co.uk