Roof replacement – the sequence from inspection to handover

Before the team arrives, the structural solutions, layers and details should be established. Dimensions and the covering specification are checked. Sheet lengths, flashings and the complete set of fasteners are also important. A missing small component can halt an important stage, so the schedule should be verified before dismantling begins.

Acceptance of the delivery covers conformity of markings and visible damage. The material must be stored according to recommendations, with appropriate support and protection. Long sheets require planned handling. They should not wait in a random place where they may be scratched or deformed during other work on the property.

The crew organises access, fall protection and the zone beneath the works. Space for waste and material transport must also be provided. Household members should have a safe route to move around. A gutter or a randomly placed ladder does not constitute a complete workstation for working at height.

Before opening the roof slope, the method of protection against precipitation is established. The scope of one-time dismantling should correspond to the covering capacity. The drainage path from temporary protections is also important. A tarpaulin must not form a heavy reservoir above the ceiling. Weather affects the schedule but does not replace an emergency plan.

The old covering is removed in a controlled manner, protecting the structure and surroundings. The type of material affects waste handling. If it may contain asbestos, separate organisation of works is required. Its independent breaking or cutting should not be started. Identification should take place before dismantling.

After exposure, battens, counter-battens, timber and places of former leaks are checked. This is the moment to confirm the scope of repairs. Damage should not be covered without a decision. If a structural problem is revealed, further action requires proper assessment and determination of the support method and sequence of works.

Repairs are carried out according to the agreed solution. A change of section, support or connection is not an arbitrary installation adjustment. After completion, it is worth carrying out an acceptance inspection and taking photographs. Later, access will be restricted by subsequent layers. The documentation should reflect the actual condition, including approved changes from the construction site.

Next, the substrate suitable for the covering is prepared. Tile-effect metal roofing requires batten spacing in accordance with the module, while trapezoidal steel sheet requires the selection of supports for the parameters and loads. The evenness of the surface is checked before laying the sheets. The roof geometry should not be forced by pulling the sheet metal to an uneven framework.

The underlay, insulation and ventilation solutions must form a continuous system. Particular attention is required at the eaves, chimney and penetrations. Wet materials should not be enclosed without assessment. New sheet metal will not fix condensation resulting from incorrect airtightness on the room side.

The sheets are laid in accordance with the installation direction and the rules for overlaps. Fasteners are selected for the substrate, and the seals are pressed correctly. Cutting should protect the coating. Swarf is removed as work proceeds, including from the valleys and gutters. If left on a wet surface, it can rust and cause stains.

The sequence for installing the individual flashings results from the detail; some are fitted before the sheets. At this stage, the completeness of all connections is checked. Water should have a continuous path from the upper part of the roof to the outlet. Sealant does not replace the incorrect shape of a roof valley, chimney or eaves.

Gutters and downpipes must be matched to the catchment area and terminated at the planned location. Roof access systems and snow guards are fixed to the prepared supports. They are not decorative additions. Their execution must be checked both for stability and for the tightness of the openings in the metal covering.

The acceptance inspection covers the surface, details, fixings and the patency of the drainage. Installation residues must be removed and any defects recorded. It is worth comparing the execution with the design and the system instructions. A straight line of sheets does not confirm all hidden connections, which is why earlier photographs of the stages are useful.

The owner should receive identification of the materials and usage recommendations. An established inspection plan helps to detect soiling or damage early. After the first heavy rainfall, it is worth observing critical locations from a safe position. If a problem arises, full documentation will shorten the diagnosis and allow a specific correction to be planned.