Q-Bot Under Floor Insulation


Retrofit of Q-Bot Underfloor Insulation at a housing upgrade programme for Camden Council


Camden, London

Spray Foam Contractor:


Method of Installation:

The Q-Bot Underfloor Insulation System to BBA Agrément Certificate 17/544

Scope of Project:

48 properties


Q-Bot Underfloor Insulation – Closed cell polyurethane spray foam supplied by BASF.


Project Background

As part of a drive to improve energy efficiency and reduce fuel poverty, Camden Council specified Q-Bot Underfloor Insulation which uses an innovative robotic system to spray foam onto the underside of the floor. The 48 properties included various housing types, differing in age and size. The energy savings achieved by the upgrades were modelled in SAP using elemental U-values for the individual floors and the airtightness test results of each property. This enabled the energy improvements to be calculated against a range of scenarios with alternative retrofit measures.


The Solution

BASF supplied ELASTOSPRAY® to meet the high standard requirements of Q-Bot Underfloor Insulation. It is a closed cell insulation, which provides a structural, durable and sealed insulation solution which has a positive effect on the life and value of the building fabric.


The Result

The installation of floor insulation significantly improved thermal comfort with fewer cold draughts and much more even temperatures within the house. The results show, on average, a 32% improvement in airtightness and a 77% reduction in the heat loss through the floor.

Q-Bot Underfloor Insulation was shown to be the most cost-effective retrofit measure available per EPC point gained, after loft insulation. In addition, due to the innovative installation process, there was minimal disruption for the Camden Council’s customers and the install took just 1 to 2 days.


A Typical Example

A one bedroom, ground floor flat was insulated as part of the pilot. The flat was built pre-1920 with solid wall construction and had 40m2 of suspended timber floor. 150mm of insulation was installed between the joists and 25mm below the joists. This resulted in an EPC points improvement of 2.8, and a carbon emissions reduction of 14,200kg CO2e over the 42 year lifespan of the insulation.


Further Information

If you need technical assistance with your project, ECON Building Products would be delighted to help once you have completed our project contact form.




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