Fast answers before you plan the work.

There is no single guaranteed month. Choose several stable, dry days when the wall is dry, not overheated and within the coating manufacturer’s limits. Cleaning, repairs, primer and finish all need suitable drying time.

Usually yes, provided ventilation, humidity, occupancy and drying are controlled. A closed damp room in winter and an air-conditioned room drying too quickly in summer can both need adjustments.

The measured area may be similar, while preparation, cracks, height, access, protection, colour change and excluded items differ. Compare the written scope and assumptions, not only the price per square metre.

No. Visible moisture and biological growth should be addressed, the water source investigated and the surface dried before painting. A cosmetic coat can hide evidence temporarily and is likely to fail if the cause remains.

No. Tile material, finish, condition, laps and drainage determine the method. Aggressive pressure can damage finishes or force water beneath tiles. Inspect the roof and choose the least aggressive suitable approach.

Not by itself. Moss and staining concern surface condition and drainage; replacement decisions require evidence of wider tile, underlay, flashing or structural failure. Cleaning and local repair should be assessed separately.

From safe access points, photograph the likely source, the path below and the final damp or pooled area. Add the date, location and an overview. Never climb onto a wet roof for a photograph.

Usually 3–5 purposeful photographs are enough to start: the whole property, the complete working surface, a defect close-up, the access route and one measurement or second elevation.

They can support a planning estimate, not an exact scope. The Caderneta distinguishes tax-area concepts such as private, dependent and footprint areas; none automatically equals roof, façade or paintable area. Maps, documents, photographs and measurements should be reconciled.

Yes, if access, written scope, approval limits, change control and evidence are agreed first. A useful handover includes before-and-after photographs and a note of work left outside the scope.

The test shows how the material, joints and previous treatment react after drying. Stone, tile, concrete and coated surfaces can respond differently to pressure, abrasion and cleaning products.

Not automatically. Timber, ferrous metal, aluminium and galvanised surfaces need different preparation and primers. Identify the material, repair movement or corrosion and follow one compatible system.