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Build Fast, Affordable Eco Modular Buildings for Home, Leisure or Office Use

Typical fully-insulated eco modular buildings can be constructed in just 3 - 5 days.

Our versatile, full-insulated eco modular buildings are ideal for affordable housing

With a faster, more innovative way of constructing, leading to superior builds with low running costs

The convenient pre-insulated nature of SIP Panels makes them ideal for constructing modular buildings and mobile homes quickly and efficiently.

A typical, two-bedroom home designed by us can be erected in just 3 – 5 days, and because our SIP panels are already fully-insulated, they provide a superior build quality and eco-friendly affordable housing.

Our eco modular buildings can be used for affordable housing schemes, getaway homes, small beach houses, or even a garden office.

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What are the main benefits of SIPs panels?

Below, we’ve listed some of the main advantages when using our high-performance SIPs polystyrene panels for your modular build project:

  • Up to 3x faster than traditional methods - erect a typical house within a week
  • Reduced U-Values as low as 0.10 W/m2K - leading to increased space with a thinner wall
  • 90% less wastage on site (as our panels are manufactured off-site)
  • Zero reliance on weather conditions - for minimal disruption to the critical path
  • Lightweight - ideal for sites in city centres with access restrictions
  • Easier installation - with reduced drilling and crane use on site
  • Huge savings on labour - with reduced number of trades and supervision on site
  • Huge savings on labour - with reduced number of trades and supervision on site
  • 60% less timber than traditional build methods
  • Increased usable roof space - fully-insulated roofs without trusses
  • Build up to 4 storeys with SIPs (or five with blockwork or steel first storey)
  • 7x stronger than timber frame - and 3x stronger than brick and block
  • Excellent insulation values for increased resale value
  • Airtight, with reduced cold bridging
  • Lower annual energy costs
  • Does not degrade or deteriorate over time
  • Naturally more eco-friendly than other build types
Looking towards this modular building

Our high-strength, high-performance SIP panels are:

  • Non-toxic
  • Low carbon footprint
  • Made with 100% recyclable EPS
  • Energy Efficient
  • Fire rated
  • Breathable
  • Mould resistant
  • Extremely Strong


Here's what some of our customers are saying:

"I cannot thank this company enough for the help and support they have given us. From initial enquiry through to delivery and post installation support, they have exceeded all expectations."

Jeremy Ruppersburg, London

Why choose SIPs Eco Panels for your modular building?

As a family-run business with over 35 years’ experience in construction, we have a team of highly-experienced professionals who are on-hand to guide you through every stage of the process, from design right through to completion, via your own dedicated production manager.

Our team of SIPs specialists can even install your SIP panels for you on the day, taking the risk out of your eco modular building project.


We’re very proud of our carbon-neutral facility based just north of Edinburgh (making it easy to deliver nationwide). All of our timber is responsibly sourced, and all of our materials can be tracked and traced back to source from sustainable forestry.

Beautiful home extension using SIPs modular panels

Product Information

  • Thermal Bridging
  • Air tightness
  • Fire Performance
  • Panel Sizes
  • Our award-winning system uses SIP joining splines to connect the panels, providing continuous insulation, not interrupted by repeated stud work, giving high levels of air tightness minimising any heat loss through thermal bridging.

  • Sips Eco Panels comprise two sheets of OSB3 sandwiching a core of high-performance rigid EPS insulation.  Our innovative insulated Sips spline system joins the panels together creating an airtight structure which can assist to achieve Passivhaus performance standards.

  • Sips Eco Panels load bearing walls have achieved a 75 minute fire rating (BS476 Pt 21).  While non-load bearing walls can achieve up to a 90 minute fire rating (BS476 Pt 22).

  • All our Sips Eco Panels have a standard width of 1200mm, with standard lengths of 2400, 2700 and 5100mm.
    Panel thickness range – 119mm, 144mm, 169mm, 194mm & 219mm
    *Non standard sizes can be cut from the standard panels

Thermal Bridging

Air tightness

Fire Performance

Panel Sizes

Looking to construct a SIPs eco modular building? Get in touch to request your free consultation today

One of our experienced SIP specialists will be in touch – usually within one business day – to talk you through your options

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Keep in touch with our latest news


2024 Homebuilding & Renovating Show @ NEC

We’re exhibiting at the NEC for HBR 2024 and delivering a masterclass on “The advantages of building with SIPs”.

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Sips Eco shortlisted for Best SIPs Home at the 2023 Build It Awards

We’re excited to be shortlisted for two homes in the Best Sips Home category.

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Press Releases

Energy efficient new homes at Lochford Gardens Dunbar

We’re delighted to announce our involvement in the new Lochford Gardens development in Hallhill Dunbar.

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