Nairobi’s weather swings between intense equatorial sun and heavy seasonal rains, and few surfaces on a property take more punishment from this cycle than the roof. At Bestcare Cleaning, our roof cleaning service is built around a structured process that protects the integrity of the roofing material while restoring its appearance. Rather than a quick rinse-and-go job, our teams work through five core areas of focus on every project, whether it’s a residential bungalow in Karen or a commercial warehouse roof in Industrial Area.
1. Moss, Algae, and Lichen Removal
The most visible problem on most Nairobi roofs is biological growth. Moss, algae, and lichen thrive in the damp, shaded sections of a roof — typically along valleys, under overhanging trees, and on the north-facing slopes that get the least direct sunlight. Left untreated, this growth doesn’t just discolor the roof; it retains moisture against the roofing material, accelerating wear on tiles, shingles, and metal sheeting alike.
Our moss and algae removal process uses low-pressure washing combined with biodegradable treatments formulated to break down organic growth without damaging protective coatings. We avoid high-pressure blasting on this step specifically because it can force water under tiles or strip granules from asphalt shingles — a shortcut that creates bigger problems than it solves. Where growth has taken hold in cooler, shaded microclimates such as properties near Karura Forest or the leafier parts of Runda, we apply a follow-up treatment designed to slow regrowth.
2. Gutter and Downpipe Clearance
A roof cleaning job that ignores the gutters is only half done. Leaves, silt, and debris that get washed off the roof surface during the rains have nowhere to go if the gutters and downpipes are already blocked, and standing water in a clogged gutter is one of the leading causes of fascia board rot and interior water damage during Nairobi’s long and short rain seasons.
Our teams manually clear gutters of debris, check downpipes for blockages, and confirm that water is flowing freely to the intended drainage point before we consider a job complete. On commercial properties, this step is paired with a check of rainwater harvesting connections, since many Nairobi businesses now route roof runoff into storage tanks and a blocked gutter can quietly cut off that supply.
3. Roof Surface and Material Inspection
Cleaning a roof is also an opportunity to catch small problems before they become expensive ones. As part of every job, our crew inspects the roofing surface for cracked or slipped tiles, rusting or corroded iron sheets, loose fasteners, and early signs of leaks around flashing and roof penetrations such as vents and chimneys.
This inspection step matters because it’s far cheaper to replace a handful of damaged tiles or re-seal a flashing joint now than to deal with water damage to ceilings and roof timbers later. We document what we find and share it with the property owner, so decisions about repairs or replacement are made with clear information rather than guesswork.
4. Stain and Rust Treatment
Kenyan roofs, particularly older iron sheet roofs common across residential estates in areas like Buruburu and South B, often develop rust streaks and dark staining over time. These stains are frequently mistaken for permanent damage, but in most cases they can be treated and significantly reduced through targeted stain removal and rust-neutralizing treatments applied after the main wash.
Our rust and stain treatment step focuses on visible streaking near fasteners and seams, as well as general discoloration caused by dust, exhaust residue from nearby roads, and mineral deposits from hard water runoff. For metal roofing specifically, we assess whether a protective anti-corrosion coating should be recommended as a follow-up service to extend the roof’s working life.
5. Safety and Access Management
Roof work carries real risk, and it is treated as such on every job. Before any cleaning begins, our team assesses roof pitch, material condition, and weather conditions to determine the safest access method, whether that’s roof ladders, harness systems, or scaffolding for steeper or higher structures. Work is paused during rain or high wind, and our crews use non-slip footwear and fall-protection equipment appropriate to the property.
This focus on safety protects both our team and the client’s property — a rushed or improperly secured roof job is far more likely to result in cracked tiles, dislodged fittings, or accidents than one carried out with proper planning.
Why This Structured Approach Matters
Roof cleaning is often treated as a cosmetic service, but a well-executed job does more than improve curb appeal — it extends the life of the roofing material, protects the structure underneath, and catches maintenance issues early. By working through these five areas on every project, Bestcare Cleaning delivers a service that Nairobi property owners can rely on, whether the goal is routine upkeep or preparing a property for sale or rental.
If your roof is due for a clean, get in touch with the Bestcare Cleaning team to schedule an inspection and quote.