Frequently Asked Questions

Superior SIP are the next generation of build panels and provide an affordable, quick,

thermally efficient solution that offers many benefits and eco features to the UK self

build market.

What are SUPERIOR SIPs? Superior SIP is made up of 12.5mm outer strcuture consisting of Grade A Magnesium Oxide Board (MgO) with a PUR insulation core developed by world leaders BASF. Due to this composition and thickness there is no need for additional skins such as brick and block as with other SIP and timber frame systems. Why does it take less time to build than traditional systems? The superior SIP are whole wall panels that are positioned onto a timber soleplate affixed by anchor bolts to the foundations. Once in place they are connected to each other with timber splines at every join also connected to the sole plate and the shell is formed. Ring beam is installed around the perimeter of the panels at ceiling height so creating a full frame work while the panels are being installed. This quick method means the shell is built very quickly and can be finished inside and out at the same time! What are the thermal heat absorption and retention properties within a Superior SIPs structure? When evaluating the insulating performance of a wall system, several factors should be considered. Most common among these is the U-Value. A U value is a measure of heat loss. It is expressed in W/m2k, and shows the amount of heat lost in watts (W) per square metre of material (for example wall, roof, floor etc.) when the temperature (k) outside is at least one degree lower. The lower the u value, the better the insulation provided by the material. Superior SIPs have a U-value of 0.11 which compared with traditional system of block with cavity insulation of 0.33. The U-value of Superior SIPs is much lower and therefore ensures a more energy efficient property than the traditional system. Are there problems with condensation and mould? Our Superior SIP due to its cement facing and EPS core is mould, damp, water and fire proof therefore eliminating the usual problems with building in traditional OSB SIP.  Do Superior SIP Panels come with a warranty? Warranties are available for the panels we provide and will be discussed with the project Once I order, what is the time frame for delivery? The time frame from the point of payment deposit to delivery at site would be 6 weeks. You are kept updated or progress and process throughout. Is building with Superior SIP panels  structurally safe? The product is 100% safe and structurally sound, The product has great stability, and is able to withstand comfortably a vertical compression load of strength of 90kNm, this strength is well in excess of a traditional two storey house. All projects are independently designed and verified by our structural engineer and reports and calculation submitted for use in building regulation submission. Are there any build restrictions? On its own the product can only be used to build up to 3 floors. However, when combined with other strengthening structures there will be minimal build restrictions. This is the case when utilising the product with commercial building or additional strengthening systems such as steel, timber and concrete frames. What type of foam insulation is used in Superior SIPs? Our standard panels have a core of Modified Expanded Polystyrene (EPS). EPS provides lower u values than other types of foam and does not contain chlorofluorocarbons (CFCs), which are believed to damage the Earth’s ozone layer. The u value of our panels are extremely stable. In field testing over a number of decades EPS has been shown to retain virtually all of its original thermal and physical properties. EPS maintains a constant value in either hot or cold temperatures. Are SIPs a new product? The generic SIP structure is not new, it has been utilised since the 1950s throughout the USA. The product has been entering the UK over the past 10 years, although adoption is slow due to the traditional approach still heavily used throughout the UK. SIPs are starting to get recognition as a superior building system and have full certification by the UK government and housing building regulations. SIPs historically have mainly been used for eco-housing due to its energy saving properties and they achieve the highest sustainability and insulation rating levels. The large element SIP structure is a new product and it is far superior to the conventional smaller SIP structure.

How “green” and “eco friendly” are

Superior SIP panels?

The product is known as a green product mainly due to its insulation properties that create a lower dependence on heating and energy usage. By using Superior SIPs structure would that mean my house is fully eco? Not entirely. The property would be quite eco-friendly with energy saving through the insulation, but a full eco-property requires other measures such as heat exchangers, energy saving lighting, rainwater/grey water and design systems. The Company are able to carry out a full eco-analysis of the property and are able to provide a full service to create a 100% eco- property. What is the structural performance of Superior SIP panels? SIPs form a light and strong structure Excellent for in-plane loads SIPs buildings actually behave as thin shell structures, dispersing point loads throughout the entire surface area. There have been many tests and studies carried out. These include loading the panels with a uniformly distributed load, axial loads centrally and eccentrically placed, racking loads, long-term creep, fixing pullout and shear and bending loads on the panel joints. The strength of the our panels are far higher than traditional SIPs as there are no weak joints within the panel. These weaker joints in traditional systems need to be strengthened over load points. This is not the case with Superior SIPs. What is the Structural Strength Uniformly distributed load – Tests have shown that the panels have a very high ultimate bending strength. Deflection, calculated as described in the Design Guide, is the governing criterion in design. This increases user confidence knowing that safe working loads are well in excess of standard deflection limits. Axial load – Axial loading tests on panels 100m thick, 2.4m in height and 2.4m in width were seen to fail at a load of 440kN/m. Using a factor of safety of 2.0 it is seen that panels will comfortably support a vertical load of 90 kN/m. These loads are well in excess of the average foundation loading from a typical two storey house of traditional construction. Can I get building regs for the Superior SIP? We work closely with the local building authorities and the panels we provide are LABC approved, which means we can work with any building authority in the UK. Providing there are the usual regular inspections and building control are furnished with plans and our engineering reports and calculations there will be no issue with building regulations. We undertake this application for you as part of the package. How much does it cost to build with Superior SIP Panels? This depends on the housing style, sector and of course size. Most SIP companies in the UK are more expensive than traditional. With our system we are determined to provide the lowest cost SIP product in the UK. Please feel free to contact us for a quote and we can discuss your budgets and create a solution for tailored especially for you. Why is it more energy efficient than traditional build methods? Its energy efficiency properties comes from the materials utilised within the product. The composite cement boards harmonise with the EPS insulation creating a fully filled cavity and sealed envelope. This ensures that heat is able to transfer and be created throughout the exterior walls, whilst ensuring the heat generated inside the property is not lost. The energy efficiency is so high in a SIP structure that energy and heating costs are kept very low. Are UK architects aware of this product? Most architects and structural engineers are aware of this product, although utilisation is relatively low in the UK. In fact we at Superior SIPs find that we are educating them as we progress with more projects. Any queries or enquiries from architects/engineers are welcomed as the better the knowledge of our product the more builders will utilise it.

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Frequently Asked Questions?

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What Are Superior SIP Panels?

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Do the panels come with a warranty?

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The Superior SIP’s Team

We are always available to chat with you regarding your project. Unlike other SIP companies we pride ourselves on a 1:1 personal service with all our customers. Once we have discussed the project with you and gathered enough initial detail, our property team will email you a non-obligation quote within 24 hours. If you are in work during the day and unable to discuss the project, no problem, our team are on hand to answer your query during weekday evenings and weekends when requested. We work with you to ensure the best outcome for your project.

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 Great work, great prices and constant communication throughout the whole pre-buying and development process. Thank you Rod,Nigel & Team”. 

Below is a selection of projects using the Superior SIP build system. These projects also include new projects

currently under construction as of 2017.

Email us today to see how we can help you build your dream home.

As Featured In
SIP Kit Homes
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2- Three Storey New Builds |

South Wales

Development of 2 Three storey new build properties in South Wales..

Bungalow Re-Design | North West


Demolish & re-design existing bungalow into a modern feature property.

Garden Room | South East


A small modern garden room in the Dorset area of South England.

New Build: 3 Bedroom Detached

House | North Devon

A modern 3 bedroom new build inside a walled garden.

Single & Double Storey Extension

| South West England

Single & double storey extension with pitched and flat roof built off beam and block foundation.

Extension For 6 Flats | South

West England

A double level SIP and roof extension of an

existing property to create 6 self contained


Superior SIP Project Gallery

Copyright Superior SIPs 2017

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SIP Kit Homes Kestrel Osprey Eagle Merlin
Are SUPERIOR SIPs Fire resistant? Superior SIP is made up up high Grade A magnesium oxide as the outer layer for internal and external facing of the board. Our MgO sip board is not only fire resistant, it is fire proof. The product has achieved Class A1 fire rating, which means it is incombusatble (the material does not burn when exposed to fire). The MgO SIP product we provide is classified as “A1 non-combustable” which is the highest rating a building material can achieve for fire safety. for further explaination of this rating feel free to call us or drop us an email. Alternatively, you can review your building regulations or speak to your arcitect/structural engingeer.
Regus House, Windmill Hill Business Park, Whitehill Way, Swindon, SN5 6QR Email: