Munoz House | Passive House Self Build SIPs Project

About the project | Munoz House - Colchester



PROJECT TYPE: Passive House self build

System Products:

172mm SIP Panel

The panels are typically 1220mm wide and can be as long as 7.5 metres in length to suit each individual project.

172mm SIP Panel

The panels are typically 1220mm wide and can be as long as 7.5 metres in length to suit each individual project.

Metal Open Web Internal Floors.

A metal open web floor refers to a floor construction method that utilizes metal open web joists or trusses. This design allows for efficient routing of services and provides cost savings, ease of installation, and design flexibility.


Caberdeck is a structural decking derived from CaberFloor P5, which meets the standards set out in BS EN312: part 5 and BBA-approved, offering additional confirmation of its quality and efficiency.


TF200 is a breather membrane product offered by the company Glidevale Protect. It is a high-performance membrane meant for safeguarding external walls including roof while construction is happening.

Architecturally Complex – tbc + *2022/3

The costs provided are totally indicative and should be used informatively and not part of any detailed budgeting process. How long is a piece of string comes to mind!!!

We do hope however that this helps to provide a picture of what can be achieved with our structures within different budget ranges.

A large contemporary passive house built using 172mm thick SIP panels, metal open web floor joists decking and all internal walls.  The use of SIPs was especially important to allow full use of the vaulted ceiling and utilise the full floor within the roof space.

The client’s mission before the project started was to build a high-end home to passive standards, on a budget by managing as much of the process themselves.

Through lots of discussion and homework, the architects were chosen and then specialist sub contractors were employed that had experience delivering the type of project that was to be built.

One of the main drivers for the structure was an airtight energy efficient system that was lightweight and high quality which would also enhance the use of the foundation type.

SIP Build UK were chosen to provide the superstructure, walls, floors, roof structure floor decking and all internal walls.  The installation was particularly important to ensure the air pressure testing achieved the passive standard.

The design incorporated large roof overhangs to provide solar shading.  Large feature windows to make the most of the outdoor space and view all meant that the thermal performance of the walls and roof was increasingly important.  This led to the use of a 172mm thick roof and wall panels.

A free-form glass and timber tread staircase (specifically imported from Columbia as an ode to Jay’s home land) meant that there was lots of internal structure required to create the large open spaces.

SIPs have contributed to the overall thermal performance, airtightness and size of the building being built.  Thinner wall build-ups and a faster method of build help keep the house larger in footprint whilst reducing time on site.

To add to the sustainable options for the house 10,000L grey water harvesting tanks were installed so this could be recycled when required.

Jay commented before his build was finished “This is my current personal experience with my passive house. Despite the freezing temperature outside, the temperature inside is running between 17-18°C! To think the construction is not even completed yet! This is why I'm so passionate about sharing the passive house standard with all of you! It's mega amazing that not only am I able to do my part in saving the planet, but I'm also reaping awesome benefits from it!”

Looking to make your vision a reality? Contact us.

Munoz House - Winner Jewson Making better Homes Award 2024

"The client comments on his project ideology - “the whole project kind of goes down to my core values as a person, I want to be part of the solution, rather than being part of the problem. I know that we have destroyed the planet for so long that its time for us to go back and rethink and say how can we live better? How can we live more sustainably and how can we leave a better planet than I encountered myself. So for me the driver was that, you know living in a way that I feel comfortable, that I’m not polluting first of all, that I feel comfortable with the way that I live and it is helping the planet so its kind of a win win and that makes sense."