Repairing Wet Rot damage for Greater Manchester Police


Earlier this month, Timberwise were instructed to carry out an intrusive damp and timber report for the Greater Manchester Police (GMP). Timberwise were specifically asked to investigate approximately 21 timber windows to the end elevation of the GMP building. At our initial contact with the GMP, it was highlighted that several of the windows were suffering from various levels of wet rot and in need of repair.

Did you know?

Formed in 1974, Greater Manchester Police (GMP) is one of the largest police forces in England & Wales. Serving more than 2.5 million people and covering an area of 500 square miles. 

During the survey, the extent of the fungal decay became more apparent. The survey revealed a severe outbreak of wet rot within the neighbouring timbers surrounding the window, this was mainly a result of; defective rainwater goods, inadequate window beadings and lack of routine maintenance. The combination of these defects, allowed surface water to penetrate the fabric of the building over a period of several years.  As the moisture levels built up within the timbers it created the perfect conditions for wet rot growth to germinate.

Our experts found several parts within the roof section that also needed to be treated, along with several timbers that needed to be replaced due to the extent of the decay within the timber. Our knowledgeable North West Surveyor, Robert Pool, identified that many of the window beadings were in need of replacement as they were allowing water to penetrate behind the glass causing wet rot to the window frames.


Through the use of a powered access platform, Timberwise were able to provide a safe, modern and cost-effective way of working at height. For each section of the windows that needed attention, remedial works were carried out that complied with the customer’s future plans for the building. Due to the severe nature of the damage, a considerable amount of repair work was needed to rectify the devastating effect of the wood rot.

This was a fantastic opportunity to use the latest timber repair techniques. It’s a good job our technician has a head for heights!”

Robert Pool, North West Surveyor

The repairs that Timberwise carried out were a combination of replacing timbers and resin repairs, this entailed applying a layer of Dry Flex resin to the bottom rails and frames of the windows. Additionally, any defected timbers that had decayed were cut back and replaced with treated timbers to match existing timbers.

This plastic repair compound is used for the fast repair of timbers and can be sanded and painted on the same day. This means disruption on the everyday operations of the building is minimised.


Get In Touch Our Wet Rot Specialist

If you are having any problems with wet rot please don’t hesitate to get in touch with our specialists. You can contact us via our let’s chat’ button or alternatively, give us a call on 0800 288 8660 where our Timberwise team will be able to help with your property care problem. You can also visit our local office to ask for advice or arrange a wet rot survey.

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