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Thread: formwork - PVA or enamel
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1st April 2012, 07:24 AM #1
Member
- Join Date
- Jun 2007
- Location
- Kyogle
- Age
- 76
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- 6
formwork - PVA or enamel
I am currently making a large (2700 x 900 high) hardwood form for 600 dia culvert pipe headwalls. I will need to make about 20 of these headwalls so, to prolong the life of the form I was thinking of painting the timber prior to use. The inside of the form would have an engine oil / diesel mix (release agent) applied before pouring the concrete.
I do not wish to buy more paint but have on hand....
1."pink" primer and old white enamal paint
2. PVA house paint.
Any suggestions which of these would be most suitable?
I would really like to use the PVA paint first as it is better for filling in gaps and smoothing out the rough sawn timber finish.
Thanks.
Bill.
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1st April 2012, 10:32 PM #2
China
- Join Date
- Dec 2005
- Location
- South Australia
- Posts
- 140
use formply and you wont need to paint or muck around with diesel or engine oil
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2nd April 2012, 07:02 AM #3
Member
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- Jun 2007
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- Kyogle
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Too late China! I've got it made from 6 x 1's that I had lying around.
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2nd April 2012, 05:01 PM #4
Hammer Head
- Join Date
- Jan 2005
- Location
- Sydney
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- 191
sounds interesting any pics
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2nd April 2012, 06:04 PM #5regards from Alberta, Canada
ian
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18th July 2012, 08:51 AM #6
Member
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- Jun 2007
- Location
- Kyogle
- Age
- 76
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Yes I have braced the sides!
Ian, you were well out with your estimate of 5 walls. I have already done 4 and there is at least another 2 left in the original form!!!!!! The PVA paint is now starting to lift and I can see some design improvements that will make for easier pouring of the concrete.
Consequently I and finally and belatedly accepted your advice and yesterday purchased 2x sheets of formply from Bunnings.
The first 4 walls turned out ok. Not professional quality but certainly good enough to drop into a farm gully.
Would you advise some type of protective finish on the exposed edges of the formply? some are bevelled at 45 deg.
Thanks for your advice.
Bill.Last edited by gpigeon; 18th July 2012 at 08:53 AM. Reason: additional wording
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