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XPS pricing


matt-shrops

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Afternoon,

 

My house has started- I have dug the hole and it has been inspected by BC.

 

I need to order the insulation for under the slab this week.

I have had around 10 quotes for EPS and XPS. The SE has said I need 300kpa which makes EPS very expensive.

 

The cheapest XPS  300kkpa I could find comes from Germany and is about 1.5K cheaper than ones made in the UK?-DOW, Kingspan. Polyfoam. Plus a few others imported-Fibran, BASF.

I contacted some of the manufactures but the all refused to sell to me and directed me to a distributer with their markup! Seems crazy to me and the Kingspan Factory is an hour away!

 

The base will be have be  U.10 and I will be cutting the  gluing(or foaming) the 200mm upstand  as this was by far the cheaper option.

comes in at about £30.20m2 and £320 for the 200mmx200mm upstand (47m)

 

Anyone found a good price/supplier?

Cheers

Matt

 

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4 hours ago, matt-shrops said:

The SE has said I need 300kpa which makes EPS very expensive.

 

EPS300 is only normally used under point loads, not under a full slab. Have you got a copy of the SE calcs, and how they have come up with this number..??

 

This may help - shows where EPS300 is used around the ring beam.

 

If you do need all EPS 300 which seems unlikely, try this supplier

 

 

 

 

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13 hours ago, PeterW said:

EPS300 is only normally used under point loads, not under a full slab. ...

 

This may help - shows where EPS300 is used around the ring beam.

 

Agreed. 

 

Here's a couple of extracts from our slab, showing the ringbeam and "spines" down the centre of the house, which take the linear loads of external and internal loadbearing walls respectively.

 

Ringbeams.thumb.GIF.78ae9c5ac7e3e4a2e5e74fd1a19bd78b.GIF

 

The ringbeam section is as shown in the link posted by @PeterW above. The purple "thickenings" through the centre of the house look like this:

 

Spine.GIF.040f4b59b7910dbed075d32b8ad9bc4e.GIF

 

The section for the red thickenings are the same, but with EPS 100 where EPS 300 is shown in the drawing immediately above.

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Polar Quote was OK- £140 m3 for the Jackodur Plus board which has an excellent  value of 0.027. 

Also found Jackon UK that has given good quotes on Jackodur XPS to. 

Insulation4less have Fibran XPS at a similar price to- 100mm at £12.50m2

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Mine is 115m2 with 47m of upstand. Quotes below:

 

Polarwall Atlas System  (U 0.10) £7855.  DIY (cut and glue)  (U 0.95) £5370 but with "shaped" boards

Kingspan DIY (U.10) around £6000 depending on supplier

Fibran XPS DIY  (u.10) £4680

ISOQUICK (U.09) £8053 (u.11) £6886

Styrodur DIY (U.10) £4628

DOW Floormate DIY(U.10) £6306

Stylite 300EPS DIY (u.10) £3962

Jackodur Plus DIY (U.95) £3792

AFT System (EPS) (U.10) £8082

 

All prices plus VAT(reclaimable)

 

 

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