I need about 100M of 25x250 fascia boards and they are working out quite
expensive. What are the problems if I decides to cut fascia boards from
2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

Thanks, Brian

In article ,
aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out quite
expensive. What are the problems if I decides to cut fascia boards from
2400 x 1200mm sheets of 25mm MDF?

MDF doesn't like water. A decent ply would be better. Or even PVC.

--
*Succeed, in spite of management *

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

aswell13 wrote:

What are the problems if I decides to cut fascia boards from
2400 x 1200mm sheets of 25mm MDF?

MDF is essentially thick cardboard. So umm what do you think will happen
when it rains?

aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out
quite expensive. What are the problems if I decides to cut fascia
boards from 2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

MDF is basically Wheatabix. Don't even think about it. uPVC.


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

On 21 Aug, 12:36, aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out quite
expensive. What are the problems if I decides to cut fascia boards from
2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

Thanks, Brian

Exterior MDF would last a while. Normal or MR would die pretty quickly

Bolted wrote:
On 21 Aug, 12:36, aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out
quite expensive. What are the problems if I decides to cut fascia
boards from 2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to
normal wood primer?

Thanks, Brian

Exterior MDF would last a while.

Didn't know they made that? Never seen it in the sheds.


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

On 21 Aug, 18:43, "The Medway Handyman"
wrote:


Didn't know they made that? *Never seen it in the sheds.

All sorts of things exist that they don't sell in sheds.

Click on MDF: http://www.edens.co.uk/default.aspx?pid=122

It isn't nearly as cheap though. http://www.edens.co.uk/gfx/ul/files/...008_Page29.pdf

In article
,
Bolted wrote:
On 21 Aug, 12:36, aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out
quite expensive. What are the problems if I decides to cut fascia
boards from 2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

Thanks, Brian

Exterior MDF would last a while. Normal or MR would die pretty quickly

If it's anything like exterior grade chipboard, I still wouldn't bother.
;-)

--
*I want it all and I want it delivered

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

aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out
quite expensive. What are the problems if I decides to cut fascia
boards from 2400 x 1200mm sheets of 25mm MDF?

Quick deterioration of the MDF leading to early renewal - thus dramatically
cutting any cost savings over tanalised or untreated timber [1].

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

None, the stuff will still rot or break down early.

[1] I have just finished painting my 30+ year old tanalised fascia boards
and there was absolutely no sign of rot or decay in them - and that's a
'life' that you will *never* obtain with any type of MDF when used
externally.

My advice is to 'bite the bullet' and pay the costs for some decent, treated
timber and then decorate it correctly - or replace (or cover) the old stuff
with plastic.


Cash

Dave Plowman (News) wrote:
In article
,
Bolted wrote:
On 21 Aug, 12:36, aswell13 wrote:
I need about 100M of 25x250 fascia boards and they are working out
quite expensive. What are the problems if I decides to cut fascia
boards from 2400 x 1200mm sheets of 25mm MDF?

Also are there any advantages in using MDF primer as opposed to normal
wood primer?

Thanks, Brian

Exterior MDF would last a while. Normal or MR would die pretty quickly

If it's anything like exterior grade chipboard, I still wouldn't bother.
;-)


ISTR in Scandinavia an external grade MDF is used for road signs.

In article ,
Stuart Noble wrote:
ISTR in Scandinavia an external grade MDF is used for road signs.

Permanent ones? I suppose if it was coated with some high tech stuff it
could be ok - but house paint isn't high tech. ;-)

--
*I'm not a complete idiot, some parts are missing *

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

On 22 Aug, 09:40, "Dave Plowman (News)" wrote:
In article ,
* *Stuart Noble wrote:

ISTR in Scandinavia an external grade MDF is used for road signs.

Permanent ones? I suppose if it was coated with some high tech stuff it
could be ok - but house paint isn't high tech. ;-)

--
*I'm not a complete idiot, some parts are missing *

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

I don't know why you are quite so sceptical - I can understand some
scepticism, but if they use a fully waterproof glue (and enough if
it), why should it last any less well than WBP ply providing it isn't
particularly stressed? They may well treat the sawdust with
preservative (I know Medite are developing one with acetylised wood -
dust equivalent of Accoya). They might even use durable hardwood
dust, but I doubt it. It's a resin panel, with a cellulose filler is
all. If the resin is right, and the quantity of it is right, and the
filler is right, I see no reason there will necessarily be an issue.
How much would you worry about leaving a sheet of compact grade
laminate (commonly used for cladding - have a peek over at the new
blue Royal Holloway!), or tufnol outside?

Bolted wrote:
On 21 Aug, 18:43, "The Medway Handyman"
wrote:


Didn't know they made that? Never seen it in the sheds.

All sorts of things exist that they don't sell in sheds.

Click on MDF: http://www.edens.co.uk/default.aspx?pid=122

It isn't nearly as cheap though.
http://www.edens.co.uk/gfx/ul/files/...008_Page29.pdf

'kinell! No wonder the sheds don't stock it.


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

In article
,
Bolted wrote:
On 22 Aug, 09:40, "Dave Plowman (News)" wrote:
In article ,
Stuart Noble wrote:

ISTR in Scandinavia an external grade MDF is used for road signs.

Permanent ones? I suppose if it was coated with some high tech stuff it
could be ok - but house paint isn't high tech. ;-)


I don't know why you are quite so sceptical - I can understand some
scepticism, but if they use a fully waterproof glue (and enough if
it), why should it last any less well than WBP ply providing it isn't
particularly stressed?

Experience of this sort of thing claiming to be waterproof? Of course a
road sign is by nature well ventilated.

They may well treat the sawdust with
preservative (I know Medite are developing one with acetylised wood -
dust equivalent of Accoya). They might even use durable hardwood
dust, but I doubt it. It's a resin panel, with a cellulose filler is
all. If the resin is right, and the quantity of it is right, and the
filler is right, I see no reason there will necessarily be an issue.

How much would you worry about leaving a sheet of compact grade
laminate (commonly used for cladding - have a peek over at the new
blue Royal Holloway!), or tufnol outside?

Maybe - but them they're likely more expensive to make than a decent
marine ply - so rather pointless.

--
*A journey of a thousand sites begins with a single click *

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