Tips on how to clean a flat roof
Most flat roof systems require regular cleaning to ensure they continue to look tidy, although the product you choose to build your flat roof will depend on the level of maintenance required.
Felt roofs in particular can attract moss and algae growth which not only looks unsightly but can also damage the roof if left untreated for long periods of time.
Here at High-Tech Membrane Roofing Ltd, Basildon’s flat roofing experts, we specialise in the installation of maintenance-free PVC single-ply flat roofing systems across the Essex area.
As flat roofing products go, our product is among the best. Its performance against the elements is outstanding which means homeowners have peace of mind that their investment will be maintenance free for its entire life span.
Debris such as leaves, bird droppings and insects will collect on any roof, pitched or flat however, and there are simple methods of cleaning which can be taken to ensure it continues to look its best.
Before any intensive cleaning begins, it is advisable to brush off loose debris such as leaves so that the products you use to carry out the cleaning can reach the surface without obstruction.
Pressure cleaning is becoming an increasingly poular method of cleaning conservatory roofs, patios, decking and also flat roofs.
A pressure washer can deliver water at a pressure of 2,500 pounds per square inch and can be adjusted with a 25-degree tip for flat roof cleaning.
The results are impressive and instant. The water will penetrate many months or years’ worth of algae growth and moss without the need to use chemicals.
However, homeowners should bear in mind the dangers of working at height, especially with the additional burden of a power hose to contend with.
You need to be particularly careful walking on an older surface and it is advisable to stand on a sheet of timber so that your weight is spread evenly across the surface to minimise damage. Soft soled shoes should be worn at all times.
Chemicals are another efficient way of cleaning your flat roof which can be purchased at garden nurseries or DIY stores.
A chlorine solution is one option which requires less rinsing time however it can be toxic to plants so it is advisable to protect your plants from run off from the roofs.
Sodium hydroxide is another alternative which is just as effective although if the solution used is too high it can cause irreversible damage to the roof. This method also requires more intensive rinsing and for this reason can take longer to complete.
Concentrated moss and algae killer will kill algae growth and will also inhibit future re-growth.
Whichever method you choose, it is advisable to repeat the cleaning process every 12-24 months to keep on top of any dirt. If in any doubt, use the services of a professional cleaning company who can advise the best system for your flat roof.
