The primary function of a roof is to shed water. The roof is a complex structure of slates, flashings and rainwater goods above timber structural members and modern insulation materials, rainwater goods. When damp is found to the interior of a period property, there are many potential sources for this moisture. This moisture may not be coming from outside, as modern living can provide significant levels of water vapour and humidity within a building from cooking, showering and from uncovered water tanks in attic spaces. However, one of the most common concerns regarding roofs of a certain age is the condition of the slates, if and how they are failing, and when and to what extent should they be replaced.
Traditional and historic roofs have been covered with a wide range of materials, of which oak shingles, thatch and slates are the most commonly known. Roofing “slates” are not necessarily the metamorphic rock slate, but is an umbrella term to refer to any stone which can be split and used as Continue reading