box profile options

joe soapy

Member
Location
devon
so as soon as they hit the yard cover them with a tarp
Yep, and if delivered on a wet day , uncovered and any moisture between sheets, SEND them back.
We had some from Newport, the lorry was loaded on the friday, left in the rain all weekend during
Cardiff carnival. Those sheets are a right mess now
 
Pvc Plastisol is by far the best option for longevity. As RWG said most will use 0.5mm but for the difference in cost I would use 0.7mm, If I was building something for myself. With the Plastisol peeling there have been cases of it when firms use low quality steel to form the sheeting, you can normally tell who it is when they are selling it for around the price everyone else is selling straight Galvanised sheeting for.
 

Nose Abit

Member
what would you clad the side of a shed with?
i am thinking of using 0.7mm pvc plastisol

is it necessary?
0.5mm is fine for wall sheeting - most buildings are supplied with this, but if you want a stronger sheet (for whatever reason) go for 0.7mm. On smaller buildings the cost difference will be negligible, but on larger buildings can be quite substantial.

Polyester coated sheets are cheaper than plastisol sheets, but scratch easily so care must be taken when putting them up and are not as "abrasion resistant" as plastisol - things rubbing against the sheet can mark/scratch the coating. However, if the sheeting is higher up, say above concrete panels, polyester coated sheets are a good, cost effective solution.

Plastisol coated sheets are more expensive, come in a wider range of colours (not usually an issue in the Agricultural market!) and theoretically the coating has a longer life. However, the coating can peel from the galvanized metal substrate and the most common problem is where the sheet has been cut (either guillotined in the factory or cut on site) and is called edge peel. Generally this doesn't happen until the sheet is at least 15-20 years old and generally appears on the roof.
The 2nd type of peeling is where the coating has failed completely and can happen anywhere on the sheet either on the roof or wall, but more likely on a south facing elevation.This is now developing into quite a problem for a number of reputable, large scale roll forming companies. This is not due to poor quality steel, but a problem with the plastisol itself and more than one coil manufacturer has affected material (even a well known Swedish company!). Again this problem takes a few years to appear.
The most important thing to do if you use plastisol sheeting, is to warranty it - the sheeting supplier is very unlikely to uphold any claim for peeling plastisol unless you have registered the job with them and you follow their maintenance/inspection procedures.
Check with your supplier and ask about warranties - if they are a mickey mouse, fly by night company selling cheap tin they will say is doesn't matter, but if they are a reputable company they will send you the forms to fill in. If could save you a lot of agro in the future!
 

Mur Huwcun

Member
Livestock Farmer
Location
North West Wales
On the subject of sheets, I'm building a small lean-to type building on the gable end of my house to act as a pump house for the water booster pump, UV filters, tank etc. I have plenty of box profile sheet offcuts that would do the roof but they're not insulated. If I use them and insulate inbetween the perlins with 100mm or more kingspan sheets will I get a condensation problem inbetween? Obviously we'll leave an airflow gap.
 

dannewhouse

Member
Location
huddersfield
whilst your on box profiles whats the best way of fitting them.
I have done some the other day and you have to be damn careful not to lean or walk on the roof ones as the spread slightly as you are laying them sending you off square.
the good bit is if you realise just do the opposite for the next 2 ie roof I screwed at bottom then nelt on it to put all of the fixings in (seemed loads!) but the top had spread probably only 2mm but after 2 sheets I realised I was going off line so did opposite screwed at top and spread bottom slightly so as to avoid "saw tooth"

18 fixings per sheet! 6 at top and bottom and 3 on both inter timbers < 24 where there was a rooflight felt loads compared to fibre cement where probably have 8 fixings or 10 for a roof light.
 

SFI - What % were you taking out of production?

  • 0 %

    Votes: 78 43.1%
  • Up to 25%

    Votes: 63 34.8%
  • 25-50%

    Votes: 30 16.6%
  • 50-75%

    Votes: 3 1.7%
  • 75-100%

    Votes: 3 1.7%
  • 100% I’ve had enough of farming!

    Votes: 4 2.2%

Red Tractor drops launch of green farming scheme amid anger from farmers

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  • 1
As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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