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Sustainable building services for ARCHITECTS, SELF-BUILD and DEVELOPERS/BUILDERS. Low Carbon Box are accredited assessors and consultants for energy assessments, Passivhaus, air tightness testing, Planning energy statements and more.

Air Tightness Testing - Self Build House
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PassivHaus learn More
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Over Glazed Extensions learn More
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Planning Energy Statements learn More
SAP Calculations
SAP Calculations learn More
SBEM energy_assessments
SBEM Energy Assessment learn More
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Extract Fan Testing learn More
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Water Calculations learn More
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Projects / Blogs

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Screen-Shot-2015-07-01-at-17.37.39-486x243
Blog
Thermal Bridge Details
When carrying out a house design then to make it much easier for a SAP Calculation, it is really...
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Blog
What is a U value?
A U value is the measurement of heat loss (or heat flow) per m2 of surface area per 1...
opening areas in an extension
Blog
Does your non domestic extension...
Does your non domestic extension need an SBEM? Check ouyt this simple checklist below to see.
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Blog
Air Tightness Testing Example
Low Carbon Box provide an overview of an air tightness testing example so you can see what to prepare...
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Blog
Alternatives to aircrete blocks
So you are going to start building your new house or property. The energy assessor has approved the design....
Eco-house-air-test-1
Blog
Essex Eco House Air tightness...
Low Carbon Box were recently commissioned to carry out the Essex Eco House Air Tightness Test. The client an...