Contact information
Carbonlite graduates
Business Description

RTRFIT is a Passive House design and retrofit coordination consultancy that was established after 20+ years of industry experience in design and project management.  Our aim is to improve the comfort and energy efficiency of existing buildings for the benefit of occupiers and reduction of carbon emissions.

29 Fairfield Road

Broughty Ferry
United Kingdom

Magdala is a late arts and crafts movement house.  A 70% saving in space heating energy demand, is targeted through improved insulation and airtightness, introduction of mechanical ventilation with heat recovery (MVHR) and window improvements.

East Grange Steadings

The Steading was built in the 1990’s. It is a story and three quarters, four-bedroom, terraced house.

Proposed measures include the improvement of wall insulation and airtightness, replacement of the hot water and space heating system, replacement of the existing windows and installation of mechanical ventilation with heat recovery (MVHR).

Air Tightness Testing

Pulse is a portable compressed air-based system that is used to measure the air leakage of a building or enclosure at a near ambient pressure level of 4Pa. This method is approved by Scottish Building Standards technical handbook Section 6, CIBSE TM23, Part L1A Building Regulations for England and Wales and PAS 2035 retrofit guidelines.

Leak Checker Diagnostic Fan completes the system providing everything required to carry out air leakage diagnostics and identify unwanted air leakage paths.

Grant McCowan
Director (Retrofit)
+ 44 7494 660983
Lindsey McCowan
Director (Air Tightness Testing)
+44 7539169878