MAINTENANCE AND REFURBISHING OF ROOFS
“The performance and longevity of ceramic tile roof coverings are strongly influenced by the type and frequency of maintenance work and the connection of this to careful refurbishing actions.
In order to successfully carry out maintenance and refurbishing actions, it is necessary to plan for an inspection and diagnosis phase and learn of any anomalies as well as the main intervention strategies”.
In the chart below, the main defects of ceramic tile roofs and their origin are shown in the "Guide to the Design and Installation of Ceramic Roof Tiles".
(GPATC – Page 94)
• Identifying the type of wood;
• The size of the elements;
• Identifying major anomalies and defects;
• The size of the elements;
• Characterising the local environmental conditions;
• Determination of loads;
• Determination of physic-mechanical characteristics such as humidity, density or modulus of elasticity.
This inspection phase may be accompanied by small, expeditious on-the-spot tests and indications as to the possible need for specific tests more complete and detailed.
– Removing causes;
– Concealing anomalies;
– Protecting against aggressive agents;
– Replacing affected elements;
– Functional reinforcement.
It is critical that the strategies are selected after an exhaustive survey of the existing pathologies and a structured assessment of the most beneficial alternative to be adopted in each specific case.
Extending the intervention work, decided according to the situation (one-off, generalised, heterogeneous or homogeneous);
– Architectural and constructive coherence, particularly for changes in shape;
– Reversibility of the intervention works;
– Preservation of identity;
– Promotion of a sustainability perspective;
– Calculation/sizing/verification of existing solutions or those to be introduced;
– Description of works and materials in appropriate technical discourse;
– Description of the works including an architectural and/or construction design;
– Description of the works including a work execution schedule;
– References to specific technical documentation;
– Skilled labour in the field concerned;
– Specific climatic or protective conditions for carrying out the work;
– When it is unusual, prior reflection on the advantages of the envisaged intervention in relation to current alternative solutions;
– Estimate durability and maintenance planning.
As in the case of maintenance strategies, and based on these principles and concerns, it is essential that refurbishing work on roof coverings includes all the measurements and techniques necessary for its success, as understood in a broad sense, and result from a detailed design, supported by a careful survey and by assessing and diagnosing both the structure and the covering.