plants not only place additional load on the building but also invade the structure with their roots. Guttering can also be occupied by weeds, resulting in damaged walls from water overflow. All of this puts staff, customers and finances at risk.
Removal is not as simple as a spot of weeding. Pulling roots from the roof membrane could cause thousands of pounds in repairs, not to mention water spoilage to the building’s interior and stock.
The most appropriate method of removal is chemical treatment by a licensed practitioner, such as PHS Greenleaf, the UK’s leading interior and exterior landscaper. This will ensure that the roof structure remains intact and watertight. PHS Greenleaf offers weed removal services for most plants found in many areas, including flat roofs, using highly effective specialised and controlled chemicals. Full documentation regarding Risk Assessments and spraying certification PA1 and PA6 will be provided.
PHS Greenleaf’s certified Grounds Maintenance Specialists are located nationwide and are available for a full site assessment followed by either a one-off spray or a program of weed control management to prevent re-occurrence. Following treatment, detritus will be cleared leaving a space that is less conducive to weed growth.
"Many people aren’t concerned by weeds growing on roofs and in guttering until it’s too late and the structural damage is done," says Paul Huish, PHS Greenleaf’s Northern Region Grounds Maintenance Manager. "Incorrect removal can do more harm than good when all that is needed is a simple treatment by PHS Greenleaf. We take all the risk out of the job by using a qualified team to handle dangerous but effective substances as well as appropriate safety equipment to get to the roof and eradicate the problem.
"We have had many successes", continues Paul, "including the High Cross Shopping Centre in Leicester. In this instance, the roof was in danger of being compromised by Buddleia that had seeded there. PHS Greenleaf was contracted to spray the unwanted plants and return once they were dead to cut them down and remove all waste, leaving the roof safe and sound."