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Chelmsford's Leading Air Tightness Testing Experts

The most effective way of ensuring that your building meets Building Regulation L1a!

At Tophouse Assessments, we specialise in assisting architects, designers, contractors, building companies and property builders to meet Building Regulation L1a, through decades of experience, first class support and affordable advice and guidance.

There are a variety of companies out there that claim to offer a first class Building Regulation L1a compliance service but actually provide a takeaway service that focuses on cheap air leakage testing and SAP calculations but ignores quality. They deliver costly and weak solutions that then often require thousands of pounds to be spent on solar panels or extra insulation that could have been easily avoided with more expertise. This is exactly where we come in.

Working for commercial and domestic clients across Chelmsford, Essex, London and Kent, we design and craft the very best air tightness testing and SAP calculation regimes; all at very fair and competitive prices. Taking advantage of our decades of expertise and experience, we explore the most cost effective ways of assisting you to meet all building regulations for your extensions, conversions or new builds.

We aim to provide you with the very best compliance services, optimised to reduce your build costs while still enabling you to build better homes and domestic properties. Put your future builds in our experienced hands. Call Tophouse Assessments today on 01634 799115.

The very best air pressure testing Services across Chelmsford

Specialising in a variety of SAP calculation and air leakage testing services, we work for a range of builders, architects and designers across Chelmsford, Essex, London and Kent. Our full range of services includes:

  • Air Pressure Testing & Air Tightness Testing
  • SAP calculations for Extensions, Material Alterations and and analysis to L1b
  • SAP calculations for New Building plans to pass Building Regulations Part L1a (UK England and Wales)
  • SAP calculations for Over Glazed structures and analysis to L1b

We have been helping builders, designers and architects with comprehensive SAP calculations for a wide range of new commercial and domestic building plans for many years. We ensure that they all pass Building Regulations Part L1b, including extensions, highly glazed structures and material alterations. Our extensive expertise means we're best placed to offer advice on calculations and air pressure testing for passivhaus dwellings across Chelmsford and Essex too.  

Essex's Specialists in Air Tightness Testing

Through comprehensive air pressure testing, also known as air leakage testing or air pressure testing, we will ensure that all newly built commercial and domestic properties comply with Part L1a of the current Building Regulations for new buildings. Providing our extensive service for commercial premises, we'll also ensure they meet Part L2a for new offices and other non-residential buildings. In addition, we also specialise in interim and final tests for passivhaus and EnerPHit conversions too.

If you're based in Chelmsford, Essex or anywhere else across London and the South East, contact the specialists at Tophouse Assessments today to discuss your SAP calculation and air pressure testing requirements with one of our experienced and friendly team.