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© SuperSIPs Ltd - Structural Insulated Panels - 2016

Here are a selection of our most frequently asked

questions

1. What are SIPs panels made of?

SIPs (Structural Insulated Panels) are made using two facings of OSB3 (Oriented Strand Board) with a filling of PUR (polyurethane) insulation.

2. What bases can be used?

Studios - you can use the following bases: Concrete Base, Slabs, Helical Piles (Stop Digging) based on 1.5m centres. Pads: No more than 1.5m apart 450mm square hole - dig out and fill with dry lean You need a pad in each corner and either side of the door opening Minimum of 50mm rebate or gap between the dirt (ground) and the studio Houses - you work direct off the Slab/Brickwork or Block and Beam.

3. How do you fit the electric cables and plumbing pipes in a SIPs building?

All pipes and cables must be battened out and surface mounted.

4. Are they fire resistant?

Our standard panels are not fire resistant, however you can clad them with plasterboard or CPB board to achieve a half hour fire resistance.

5. How much does a SIPs building cost per square meter?

Studios - roughly between £180/225 per sqm2 Houses - roughly between £200/275 per sqm2

6. What comes in a SIPs kit?

We supply the following in a SIPs Kit 100mm SIP floor panels 100mm SIP wall panels 150mm SIP roof panels All glue, screws (for the corners & roof) & timber to complete the kit Drawings (GAs for sign-off, production & assembly drawings) You will need to/supply yourself: Dig the footings Level in 600mm x 600mm x 50mm slabs Breathable membrane to cover entire base prior to laying the floor Breathable membrane to wrap the walls Nails or 50mm screws Windows & doors Internal & External finishes, i.e. render, cedar cladding, weather boarding, brick finish or composite board EPDM roof Gutters & downpipes Electrics etc

7. Where do I buy other materials i.e. breathable membrane, screws, etc?

Any good local builders merchant or eBay/Amazon.

8. Where in the building would I use splines?

Splines can only be used where there is a long run of walls with no reveals. timber is always required in the floor, roof and corners for strength.

9. What size panels do I need to follow building regulations?

Studios – 100mm floor and walls and a minimum of 150mm for the roof. Houses – 150mm minimum for the External Walls, 100mm for Internal Walls and a minimum of 175mm Roof.

10. Are SIPs environmentally friendly?

Yes they are - to find out more information please visit our website

11. Could I put up a SIPs build myself?

Depending on the complexity standard studios and houses are easily assembled using the drawings and tips we provide, complex designs will require specialists – you can find a list of these on our fitters list (here).

12. What are the benefits of buying a SIPs Kit over buying panel only?

With a Kit you get everything you need to erect the basic structure (glue, screws, timbers, assembly guide, etc).

13. What can SIPs be used for?

Newbuilds, holiday homes, commercial property, classrooms, gyms, extensions, granny annexes, garden rooms, music studios - almost anything.

14. What makes our panels better than competitors?

High U – Values, all of these are available on our website. We use a Polyurethane (PUR) sandwiched between layers of Oriented Strand Board (OSB) which gives the panels the structural strength and insulation required. Our boards are injected, other supplier simply stick the boards together. We also use 11mm OSB rather than 15mm OSB (which our competitors use) this enables us to put more foam in the panels and thus making them more thermally efficient.

15. If I buy a panel only, what can I use to cut it?

Depending on thickness a standard rip saw is not man enough for the job, you have to cut through the 11mm OSB on one side and then turn it over and do the same on the other. You must use a hand saw to cut through the foam as using anything motorised can create toxic fumes which must not be inhaled (do not use a hot knife).

16. What are General Arrangement drawings and what is the difference to normal

drawings?

The GA drawings are to confirm all the measurements of the build prior to it going into production, these are done in Sketch Up and are crucial to create the full production drawings before any of the panels are cut.

17. How do the panels link together?

They link together with timber or splines - Splines can only be used where there is a long run of walls with no reveals. Timber is always required in the floor, roof and corners for strength. Timber required for each panel: 100mm Panel – 3 x 2 125mm Panel – 4 x 2 150mm Panel – 5 x 2 175mm Panel – 6 x 2 200mm Panel – 7 x 2 225mm Panel – 8 x 2 250mm Panel – 9 x 2

18. What is a U-Value?

U-value is a measure of air-to-air heat transmission due to thermal conductance and difference in indoor/outdoor temperature. As the U-Value decreases so does the amount of heat transferred through the material, i.e. the lower the U-Value (w/m2k), the better the insulation.

19. What are the weights of each panel?

100mm – 48kg 125mm – 50kg 150mm – 52kg 175mm – 57.5kg 200mm – 60kg 225mm – 64kg 250mm – 72kg

20. What size panel would you recommend for a house in the UK?

Houses - 150mm minimum for the External Walls, 100mm for Internal Walls and a minimum of 175mm Roof: this is to comply with building regulations.

21. What are our lead times?

Panel Only – 7 – 10 days Studios – 4 – 6 weeks from when the GA’s have been approved Larger Projects – 6- 8 weeks from when the GA’s have been approved

22. How deep do the footings need to be?

standard strip footings are dependent on the ground conditions in the local area but the footings can be narrower subject to the facade finish.

23. What external and internal finish can be used on SIPs?

There are no restrictions, this is a personal preference.

24. What is the maximum weight a SIPs floor can take?

We have had a grand piano on a sips floor but we had to put in a steel plate to distribute the point loads. We need to be informed if it is being used for a gymnasium or any extremely heavy equipment and we will advise accordingly the method to achieve your requirements.

25. What finish would you recommend for a roof?

Studios – EPDM or glass fibre Houses – Any tiling or a tin roof (Tartare colour coat urban)

26. Do SIPs prevent Cold Bridging?

They are the most thermally efficient product at preventing Cold Bridging.

27. Does it affect the thermal performance when using timber instead of splines?

Yes but you do require timber in the following locations, for strength – the floor and roof, for fixings – in the reveals and corners.

28. What size building can be erected without planning permissions?

Up to 30 sqm2 internal area and under 2.5 metres if within 1 metre of the boundary and 4.5 meters if 2m away from the boundary.

29. Can our standard studios be used as a habitable space?

If it is constructed to comply with building regulations and planning there is no reason why it can’t be used as a habitable space.

30. What is the warranty of a SIPs build?

We give a 12 months defect warranty with our SIPs.

31. Are SIPs buildings movable?

They can be moved if they are constructed on a base strong enough to withstand lifting (size of the studio can be restricted by transport capability).

32. Are SIPs buildings as cost-effective as traditional builds?

Materials cost is greater than standard block and insulation but speed of construction, lack of wastage and significant labour costs always balance it out and you have a much better thermal efficient building.

33. What are the benefits of SIPs against timber framed builds?

Thermal performance, minimal Cold Bridging, minimal waste.

34. How big is the rebate on each panel?

The rebate is 50mm all the way round the panel.

35. Do I need to use a finish on the internal wall?

Some people varnish the OSB and we have been told it looks quite good, the traditional method is to batten out plasterboard & skim. This allows for the services to be hidden in the void.

36. How long can I leave my uncompleted SIPs build open to the elements?

We recommend that the OSB is covered as soon as possible with some sort of water proofing on the roof & breathable membrane on the external walls. The OSB 3 is waterproof for a short period of time (approx. a month).

37. Can you install my building?

No but we do have a list of recommended installers. Our Garden rooms are simple to construct, please use our tips to assist you.

38. How many panels can you fit on a truck?

On our Trucks (Transits): SIP100 – 36 SIP125 – 29 SIP150 – 24 SIP175 – 20 SIP200 – 18 SIP250 – 14 This is subject to the weight of the load, we cannot overload our trucks so please ask our sales for more info.

39. Can all of our studios fit onto one truck?

Depending on the truck, you can fit up to a Studio P but bespoke buildings will have to be reviewed.

40. What vehicle do I need if I want to collect myself?

Nothing smaller than a long wheel base flatbed transit (vans are very restrictive) Luton vans are most suitable than regular vans – (must be a high top).

41. Does the panel have to be made of OSB? Is there an alternative?

Yes - ply, but it is more expensive and we do not have structural tests for it.

42. How much does each standard studio weight?

This is TBC, please check back soon.

43. Can I put a chimney in a SIPs building?

Yes, it is possible.

44. Can you provide a breakdown of my price?

We can break it down in a form of structural engineering, design & kit price only, but an easy way on a % basis is as follows: Panel price 50% Admin, general overheads, wood, glue and screws Etc 35% Design 7.5% Structural Calculations 7.5%

45. Can I use a SIPs floor on the second storey of my building/extension?

No, it won’t comply with building regulations. We do offer an easi joist floor with our kits as an option.

46. Are SIPs buildings sound proof?

They are better than timber frame (i.e. stud work). We have built recording studios using wood wall covering on top of our SIPs.

47. How many panels do you get on a pallet?

SIP100 (1220 x 2180) – 12 SIP100 (1220 x 2440) – 12 SIP125 (1220 x 2440) – 10 SIP150 (1220 x 2440) – 8 SIP175 (1220 x 2440) – 7 SiP200 (1220 X 2440) – 6 SIP225 (1220 X 2440) – 6 SIP250 (1220 x 2440) – 6

48. Can I have a thatched roof on my SIPs build?

Yes providing you comply with the building regulations and put a secondary fireproof lining between the SIPs and the thatch. This will add additional weight to the roof so the structural engineer will have to take this into consideration.

49. What size roof panel would I need for a Velux window?

Velux’s can be fitted to sips easily up to any size as long as you have the right structural elements around the window to take the load.

50. Can you confirm when wrapping the studio in house wrap, I use staples to

fix it on?

Yes, we can confirm that you need staples to fix the house wrap on.

51. What do you need to do to insert the flue for a wood burning stove?

The Flue must be double lined with a 15mm gap around this then packed with fireproof corking.

52. Do the panels comply with all building regulations and what kind of

certificate do you provide?

Yes the panels comply with the building regulations so will be approved. You will be provided with a Certificate.

53. Can I have a curved roof with SIPs?

No, unless you put a green roof curve or circular firrings on it to stretch ply over (it is possible).

54. How does the SIP roof attach to the building?

The timber (header plate) that is inserted into the top 50mm rebate needs to be glued and screwed, the roof is then placed over and screwed every 300mm around the entire perimeter of the roof. Insuring that the surface between the header plate and the roof panel has been glued also. Please refer to the panel fitting information where there is detail of wall floor and roof fixings, this is will give you a stage by stage build up.

55. What is the maximum span of the roof?

You can span up to 4.8m without steels in the roof (only), a double timber which can be inserted into the panel (minimum 150 panel) has the capability of spanning 3.6m. If this is then complemented with a 150 timber in the middle making a triple the span can be increased to 4.2m, if you are trying to span the full 4.8m you will require a quadruple made us as follows 125mm x 47mm 2no. 150mm x 47mm and an additional 125mm x 47mm. Please see the span charts on our panel fitting information for more information.

56. Can we cut round holes in a SIPs panel?

Yes, this is done by using a router and the inserting timber to enale you to get a sufficient fixing for a porthole window. You can also buy round timber specially made for porthole windows.

57. What lighting is best used in SIPs? Can I use sunked spotlights?

You cannot use sunken spotlights as the thermal efficiency of the panel will prevent the bulbs from cooling making them overheat and fail, should you wish to use sunken spotlights you need to batten down from the ceiling to provide an air gap.

58. What size battening do I use for my cladding and how far apart do I have

to space them?

Battening is predominantly 25mm x 38mm (nominal) at 600mm centres, this must be on all corners and reveals regardless of the distance.

59. Where do you apply the extra glue and foam to join the panels?

You apply the foam where the timber joins meet the insulation (apply from bottom to the top where joining uprights). The glue is applied where the OSB touches the timber join.

60. Where do the screws go?

The screws provided with our kits only need to be used where there are major joints, i.e in the corners of the build and where you attach the floor and ceiling. On all uprights and other minor joins nails can be utilised - these are not included in our kits.
Super SIPs Cut Panels Super SIPs Delivery Vehicles
“I have built the office assembling all the panels and have just added the roof last weekend. The construction of the floor, walls and roof was fairly straight forward. The roof was the most awkward process when trying to lift the panels and attaching them to the other unit.( definitely needed extra manpower require to lift panels)  Assembling the units with the cross members and then fixing seemed to be the most time consuming task. Generally the office has gone together with relative ease and has distinct advantages over a normal garden shed type construction. Following the diagrams made the construction of the office a relatively easy  process.” September 2015, MA, Potters Bar
Can’t find the answer you were looking for? Why not get in contact with a member of the team for more information: Phone: 01473 736023 Email: sales@supersips.uk.com
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© SuperSIPs - Structural Insulated Panels - 2016
Super SIPs Delivery Vehicles

Frequently Asked

Questions

Here are a selection of our

most frequently asked

questions

1. What are SIPs panels made of?

SIPs (Structural Insulated Panels) are made using two facings of OSB3 (Oriented Strand Board) with a filling of PUR (polyurethane) insulation.

2. What bases can be used?

Studios - you can use the following bases: Concrete Base, Slabs, Helical Piles (Stop Digging) based on 1.5m centres. Pads: No more than 1.5m apart 450mm square hole - dig out and fill with dry lean You need a pad in each corner and either side of the door opening Minimum of 50mm rebate or gap between the dirt (ground) and the studio Houses - you work direct off the Slab/Brickwork or Block and Beam.

3. How do you fit the electric cables and

plumbing pipes in a SIPs building?

All pipes and cables must be battened out and surface mounted.

4. Are they fire resistant?

Our standard panels are not fire resistant, however you can clad them with plasterboard or CPB board to achieve a half hour fire resistance.

5. How much does a SIPs building cost

per square meter?

Studios - roughly between £180/225 per sqm2 Houses - roughly between £200/275 per sqm2

6. What comes in a SIPs kit?

We supply the following in a SIPs Kit 100mm SIP floor panels 100mm SIP wall panels 150mm SIP roof panels All glue, screws (for the corners & roof) & timber to complete the kit Drawings (GAs for sign-off, production & assembly drawings) You will need to/supply yourself: Dig the footings Level in 600mm x 600mm x 50mm slabs Breathable membrane to cover entire base prior to laying the floor Breathable membrane to wrap the walls Nails or 50mm screws Windows & doors Internal & External finishes, i.e. render, cedar cladding, weather boarding, brick finish or composite board EPDM roof Gutters & downpipes Electrics etc

7. Where do I buy other materials i.e.

breathable membrane, screws, etc?

Any good local builders merchant or eBay/Amazon.

8. Where in the building would I use

splines?

Splines can only be used where there is a long run of walls with no reveals. timber is always required in the floor, roof and corners for strength.

9. What size panels do I need to follow

building regulations?

Studios – 100mm floor and walls and a minimum of 150mm for the roof. Houses – 150mm minimum for the External Walls, 100mm for Internal Walls and a minimum of 175mm Roof.

10. Are SIPs environmentally friendly?

Yes they are - to find out more information please visit our website

11. Could I put up a SIPs build myself?

Depending on the complexity standard studios and houses are easily assembled using the drawings and tips we provide, complex designs will require specialists – you can find a list of these on our fitters list (here).

12. What are the benefits of buying a

SIPs Kit over buying panel only?

With a Kit you get everything you need to erect the basic structure (glue, screws, timbers, assembly guide, etc).

13. What can SIPs be used for?

Newbuilds, holiday homes, commercial property, classrooms, gyms, extensions, granny annexes, garden rooms, music studios - almost anything.

14. What makes our panels better than

competitors?

High U – Values, all of these are available on our website. We use a Polyurethane (PUR) sandwiched between layers of Oriented Strand Board (OSB) which gives the panels the structural strength and insulation required. Our boards are injected, other supplier simply stick the boards together. We also use 11mm OSB rather than 15mm OSB (which our competitors use) this enables us to put more foam in the panels and thus making them more thermally efficient.

15. If I buy a panel only, what can I use

to cut it?

Depending on thickness a standard rip saw is not man enough for the job, you have to cut through the 11mm OSB on one side and then turn it over and do the same on the other. You must use a hand saw to cut through the foam as using anything motorised can create toxic fumes which must not be inhaled (do not use a hot knife).

16. What are General Arrangement

drawings and what is the difference to

normal drawings?

The GA drawings are to confirm all the measurements of the build prior to it going into production, these are done in Sketch Up and are crucial to create the full production drawings before any of the panels are cut.

17. How do the panels link together?

They link together with timber or splines - Splines can only be used where there is a long run of walls with no reveals. Timber is always required in the floor, roof and corners for strength. Timber required for each panel: 100mm Panel – 3 x 2 125mm Panel – 4 x 2 150mm Panel – 5 x 2 175mm Panel – 6 x 2 200mm Panel – 7 x 2 225mm Panel – 8 x 2 250mm Panel – 9 x 2

18. What is a U-Value?

U-value is a measure of air-to-air heat transmission due to thermal conductance and difference in indoor/outdoor temperature. As the U-Value decreases so does the amount of heat transferred through the material, i.e. the lower the U-Value (w/m2k), the better the insulation.

19. What are the weights of each

panel?

100mm – 48kg 125mm – 50kg 150mm – 52kg 175mm – 57.5kg 200mm – 60kg 225mm – 64kg 250mm – 72kg

20. What size panel would you

recommend for a house in the UK?

Houses - 150mm minimum for the External Walls, 100mm for Internal Walls and a minimum of 175mm Roof: this is to comply with building regulations.

21. What are our lead times?

Panel Only – 7 – 10 days Studios – 4 – 6 weeks from when the GA’s have been approved Larger Projects – 6- 8 weeks from when the GA’s have been approved

22. How deep do the footings need to

be?

standard strip footings are dependent on the ground conditions in the local area but the footings can be narrower subject to the facade finish.

23. What external and internal finish

can be used on SIPs?

There are no restrictions, this is a personal preference.

24. What is the maximum weight a SIPs

floor can take?

We have had a grand piano on a sips floor but we had to put in a steel plate to distribute the point loads. We need to be informed if it is being used for a gymnasium or any extremely heavy equipment and we will advise accordingly the method to achieve your requirements.

25. What finish would you

recommend for a roof?

Studios – EPDM or glass fibre Houses – Any tiling or a tin roof (Tartare colour coat urban)

26. Do SIPs prevent Cold Bridging?

They are the most thermally efficient product at preventing Cold Bridging.

27. Does it affect the thermal

performance when using timber

instead of splines?

Yes but you do require timber in the following locations, for strength – the floor and roof, for fixings – in the reveals and corners.

28. What size building can be erected

without planning permissions?

Up to 30 sqm2 internal area and under 2.5 metres if within 1 metre of the boundary and 4.5 meters if 2m away from the boundary.

29. Can our standard studios be used

as a habitable space?

If it is constructed to comply with building regulations and planning there is no reason why it can’t be used as a habitable space.

30. What is the warranty of a SIPs

build?

We give a 12 months defect warranty with our SIPs.

31. Are SIPs buildings movable?

They can be moved if they are constructed on a base strong enough to withstand lifting (size of the studio can be restricted by transport capability).

32. Are SIPs buildings as cost-effective

as traditional builds?

Materials cost is greater than standard block and insulation but speed of construction, lack of wastage and significant labour costs always balance it out and you have a much better thermal efficient building.

33. What are the benefits of SIPs

against timber framed builds?

Thermal performance, minimal Cold Bridging, minimal waste.

34. How big is the rebate on each

panel?

The rebate is 50mm all the way round the panel.

35. Do I need to use a finish on the

internal wall?

Some people varnish the OSB and we have been told it looks quite good, the traditional method is to batten out plasterboard & skim. This allows for the services to be hidden in the void.

36. How long can I leave my

uncompleted SIPs build open to the

elements?

We recommend that the OSB is covered as soon as possible with some sort of water proofing on the roof & breathable membrane on the external walls. The OSB 3 is waterproof for a short period of time (approx. a month).

37. Can you install my building?

No but we do have a list of recommended installers. Our Garden rooms are simple to construct, please use our tips to assist you.

38. How many panels can you fit on

a truck?

On our Trucks (Transits): SIP100 – 36 SIP125 – 29 SIP150 – 24 SIP175 – 20 SIP200 – 18 SIP250 – 14 This is subject to the weight of the load, we cannot overload our trucks so please ask our sales for more info.

39. Can all of our studios fit onto

one truck?

Depending on the truck, you can fit up to a Studio P but bespoke buildings will have to be reviewed.

40. What vehicle do I need if I want

to collect myself?

Nothing smaller than a long wheel base flatbed transit (vans are very restrictive) Luton vans are most suitable than regular vans – (must be a high top).

41. Does the panel have to be made

of OSB? Is there an alternative?

Yes - ply, but it is more expensive and we do not have structural tests for it.

42. How much does each standard

studio weight?

This is TBC, please check back soon.

43. Can I put a chimney in a SIPs

building?

Yes, it is possible.

44. Can you provide a breakdown of

my price?

We can break it down in a form of structural engineering, design & kit price only, but an easy way on a % basis is as follows: Panel price 50% Admin, general overheads, wood, glue and screws Etc 35% Design 7.5% Structural Calculations 7.5%

45. Can I use a SIPs floor on the

second storey of my

building/extension?

No, it won’t comply with building regulations. We do offer an easi joist floor with our kits as an option.

46. Are SIPs buildings sound proof?

They are better than timber frame (i.e. stud work). We have built recording studios using wood wall covering on top of our SIPs.

47. How many panels do you get

on a pallet?

SIP100 (1220 x 2180) – 12 SIP100 (1220 x 2440) – 12 SIP125 (1220 x 2440) – 10 SIP150 (1220 x 2440) – 8 SIP175 (1220 x 2440) – 7 SiP200 (1220 X 2440) – 6 SIP225 (1220 X 2440) – 6 SIP250 (1220 x 2440) – 6

48. Can I have a thatched roof on

my SIPs build?

Yes providing you comply with the building regulations and put a secondary fireproof lining between the SIPs and the thatch. This will add additional weight to the roof so the structural engineer will have to take this into consideration.

49. What size roof panel would I

need for a Velux window?

Velux’s can be fitted to sips easily up to any size as long as you have the right structural elements around the window to take the load.

50. Can you confirm when

wrapping the studio in house

wrap, I use staples to fix it on?

Yes, we can confirm that you need staples to fix the house wrap on.

51. What do you need to do to

insert the flue for a wood burning

stove?

The Flue must be double lined with a 15mm gap around this then packed with fireproof corking.

52. Do the panels comply with all

building regulations and what kind

of certificate do you provide?

Yes the panels comply with the building regulations so will be approved. You will be provided with a Certificate.

53. Can I have a curved roof with

SIPs?

No, unless you put a green roof curve or circular firrings on it to stretch ply over (it is possible).

54. How does the SIP roof attach

to the building?

The timber (header plate) that is inserted into the top 50mm rebate needs to be glued and screwed, the roof is then placed over and screwed every 300mm around the entire perimeter of the roof. Insuring that the surface between the header plate and the roof panel has been glued also. Please refer to the panel fitting information where there is detail of wall floor and roof fixings, this is will give you a stage by stage build up.

55. What is the maximum span of

the roof?

You can span up to 4.8m without steels in the roof (only), a double timber which can be inserted into the panel (minimum 150 panel) has the capability of spanning 3.6m. If this is then complemented with a 150 timber in the middle making a triple the span can be increased to 4.2m, if you are trying to span the full 4.8m you will require a quadruple made us as follows 125mm x 47mm 2no. 150mm x 47mm and an additional 125mm x 47mm. Please see the span charts on our panel fitting information for more information.

56. Can we cut round holes in a

SIPs panel?

Yes, this is done by using a router and the inserting timber to enale you to get a sufficient fixing for a porthole window. You can also buy round timber specially made for porthole windows.

57. What lighting is best used in

SIPs? Can I use sunked spotlights?

You cannot use sunken spotlights as the thermal efficiency of the panel will prevent the bulbs from cooling making them overheat and fail, should you wish to use sunken spotlights you need to batten down from the ceiling to provide an air gap.

58. What size battening do I use

for my cladding and how far

apart do I have to space them?

Battening is predominantly 25mm x 38mm (nominal) at 600mm centres, this must be on all corners and reveals regardless of the distance.

59. Where do you apply the extra

glue and foam to join the panels?

You apply the foam where the timber joins meet the insulation (apply from bottom to the top where joining uprights). The glue is applied where the OSB touches the timber join.

60. Where do the screws go?

The screws provided with our kits only need to be used where there are major joints, i.e in the corners of the build and where you attach the floor and ceiling. On all uprights and other minor joins nails can be utilised - these are not included in our kits.
Can’t find the answer you were looking for? Why not get in contact with a member of the team for more information: Phone: 01473 736023 Email: sales@supersips.uk.com