Roof Covering Renewal to Model Farm, Aldenham

Evans & James, through Cullen Conservation were appointed to prepare a schedule of works and related procurement documents for the roof covering renewal to buildings within the Model Farm in Aldenham. The client, Hertfordshire County Council then procured and managed the works.

The buildings included a residential dwelling and stable accommodation with both roofs having a slate covering which had  received a Turnersing coating in the past. This coating had deteriorated, in-turn damaging the slates. The roof was determined to be at the end of its service life.

We initially undertook a visit to the farm to understand the nature of the works required and the environment within which the buildings sat. We were accompanied by a second year Building Surveying BSc student from Reading University who undertook shadowing of our visit. The site visit uncovered issues with access throughout the roof void within the residential dwelling and displaced insulation from electrical works which had been undertaken. We identified electrical risks as downlight had not been fitted with smoke hoods and considered how contractors would be able to access and work in the roof space safely.

In addition to resolving the issues noted on site, the schedule of works included counter battening the existing parking board and applying a breathable roof membrane over these battens, taught to ensure appropriate ventilation. New tile laths were then to be installed horizontal over the counter battens before then receiving a new Welsh slate covering graded to match those that had been removed. Thermal upgrades and access improvements to the residential loft space were also incorporated.

A key consideration in the preparation of the schedule of works was the ‘live’ environment of the site with the model farm being in active use for Equestrian purposes. We therefore had to consider the close proximity of horses, relocation of the horses which would be displaced whilst their stable roof covering was renewed, and ensuring that absolutely no debris was left behind which could injure the horses. This was in addition to the ‘people’ risks associated with clients and operatives using the site whilst the works were underway.

The renewed roof coverings will ensure the longevity of the buildings for many years to come. To find out more about our services relating to repair and conservation click here