We’ll also discuss ways to possibly engineer certain items out of the design and ensure that nothing has been left out of the quotation.

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Step 1


The first step of the Sips UK build process is the quotation. Once you’ve sent us the details for your project, including the development specifications and any existing architectural plans, we’ll issue you with a quotation for the work. These quotations are as detailed as possible, giving our customers an accurate representation of cost from the very beginning.

We always look to ensure that there are no hidden costs for our customers, which is why we include both a list of items included in the specification and any extra items that may be necessary throughout the project.

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Step 2

Factory Visit

Before ordering their SIP building systems, we encourage all of our customers to come along to our factory to see first-hand how the process works and to meet the team that will be working on their project.

During the factory visit, we will talk through the project face to face, ensuring we know everything there is to know about each customers’ specific requirements. We’ll also discuss the ways certain elements may be engineered out of the design, and make sure nothing has been omitted from the quotation.

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Step 3

Design and Engineering

Once an order has been placed, the architectural drawings will be passed onto our design and engineering teams. These drawings must be in DWG or DXF format and detail the position of the SIP walls and roof panels as well as the internal partitions and structural openings.

Our structural engineers will use these drawings to calculate the line and point loads, as well as design project specific beams or lintels that will be needed to support the roof or any large openings. On receipt of these calculations, we then produce a 3D representation of your project from which our designers will also produce a set of manufacturing drawings to be approved and signed before manufacture begins. A copy of the engineering calculations will be given to you or your architect that can be passed on to building control or your warranty provider.

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Step 4


All of our structural insulated panels are produced on-site at our facility in Rushden, Northamptonshire. Throughout the production process, we ensure that every panel we produce is of the highest standard, never settling for anything but the best. At this time, we will also order any ancillary items including glulam beams, structural steel, and floor joists.

This step of the process can vary depending on the size and scale of the project, and a suitable delivery date will be agreed accordingly.

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Step 5

Delivery and Installation

As members of the Structural Timber Association (STA), we only use approved and registered installers. About two to four weeks prior to the SIP delivery, a contracts manager will attend the site to discuss any relevant concerns regarding installation, scaffolding, access, welfare or HSE requirements.

The average house takes approximately two weeks to install upon delivery, often using a 25-ton city crane, although installation times will vary from project to project. Once the installation is finished, the contracts manager will return to snag the building, before handing the project over and issuing a certificate of completion.