• SIPs - Jul contracts
  • SIP House - JML contracts

SIPs Services We Offer

JML Contracts is an award-winning, family-owned building and civil engineering company with over 25 years’ experience. Our expert and dedicated team is proud to offer innovative, sustainable and energy-efficient solutions to private and commercial customers across the UK. We are committed to quality and the delivery of excellent customer service – every time.

Delivering well designed, low energy, sustainable homes for a wide range of clients over the years has enabled us to grow and develop the range of services we provide.

Experience and Quality

Our team has been involved in SIPs and low energy buildings for over twenty years and our projects have taken us all over the U.K. Working closely with many different architects and engineers has equipped us with a fantastic range of experience to help deliver our clients’ requirements.

Our own SIPs and Closed Panel Factory

Owning and running our own SIPs processing facility in Central Scotland, where we engineer and fabricate all our house kits, gives us total quality control over the whole SIPs building process; an essential part of being able to deliver an airtight and thermally efficient structure.

In-house SIPs kit erection service

Unlike many other house frame suppliers, JML supply a full erection service for all our kits. This can be completed to various stages of the build, depending on the requirements of the client and project.

Foundations and Groundworks

With our own in-house civils team, JML can offer full foundations and site works packages to accompany any of our house builds. This unique service for a kit manufacturer complements our clients’ requirements across a range of self-build options.

Building Warrant/SER Services

In addition to the structural kit design, we can also offer a full SER/Building Warrant package for your project should it be required. This includes drainage, foundation design and full SER certification.

Accreditations and awards

We build all our kits with panels, certified by the British Board of Agréement (BBA).

We hold all 9001, 14001 and 18001 ISO accreditations, and we are NHBC registered and Gold Members of the Structural Building Association.

Our work has been recognised by the industry over the years, winning a number of awards including most recently, ‘Best SIPS House’ of the Year in 2017 at the UK Build It Awards.

Architectural Services

In many self-build projects, we see clients at the early stages of their project, with no formal drawings but plenty of ideas about their ideal homes.

We work alongside many architects. However, with our in-house CAD resource we can convert any early schematics or sketches into workable building plans that are suitable for onward submission for outline/detailed planning stages.

This outcome – a set of plans, elevations and sections – will also allow JML to offer a superstructure package quotation for the build in SIPs and/or timber frame options.

Cost Plans and Estimating Budgets

JML offer expert and experienced resources to assist with your project’s budget/cost plan. This covers every aspect of the project, from plot purchase and planning, through to costs for groundworks and drainage, superstructure, fit out and landscaping.

For a self-builder, a comprehensive cost plan for their whole project is essential in being able to deliver on time and, importantly, on budget.

Passive House and Energy Services

JML also offer certified Passive House design, advice and services, along with SAP calculations and a full thermal modelling package for each project.


We are a long standing NHBC registered builder and have also worked with many other independent structural warranty companies over the years.

CDM Health & Safety

The environment of health & safety is relished by some and feared by others. Of prime importance is the safety of each and every person involved in your project – at any stage. We are able to provide you with clarity, guidance and support in this area.

Timber Kit and Hybrid Solutions

Being able to offer SIPs, closed panel timber and standard timber solutions gives us full in-house capabilities to provide the optimum mix that provides the best value for your bespoke project.

The most successful buildings are those that have engaged this level of discussion at the earliest stage and JML are in the best position to advise what is available – early in the design process – to optimise the cost and efficiency of your dream home.