Dry rot present in brickwork and floor joists

This property in Stockport had Dry Rot in the ground floor timber joist. The Dry-rot has started from within an area that was not on wooden floor joist. The project involved replacing the floor joist infected with dry rot, excavate the spoil for a 3m x 2m area, and apply dry rot treatment to the timber joist and floor. We also checked the property for Wet Rot & Woodworm in the timber and floor joist.

The dry rot had spread to the brickwork and the dry rot roots have been found in the brickwork. The dry rot had started to spore.

Here the dry rot is found in the brickwork, this is where we knock through to start excavating the damp floor area. The area under the property was only 700mm high, this made working conditions very difficult. All the spoil excavate had to be sledged out.

Dry rot (Serpula Lacrymans) thrives in damp poorly ventilated areas therefore attacking area not often seen. Floor voids, loft timbers and behind timber panelling are all prime locations for attack Dry rot can even penetrate through the brickwork and attack skirting boards from behind the front side.

New floor Joists installed and dry rot sensors (round white marker)

Treatment for Dry Rot usually involves the removal of the rotted timber which is replaced with pre-treated timber. Masonry is treated and sterilised to a distance of 1 metre beyond the last visible signs of fungal stranding. Chemical fungicidal treatments will absorb into the timber creating a barrier to any further attack. Other means of prevention such as improved ventilation.

Once the timber joist have started to decay with dry rot there is no alternative but to cut out the infected area. In the right conditions dry rot can spread quickly. Through the hole in the brickwork you can see the area we excavated, this was the source point of the dry rot.

Once all the spoil had been excavated you can see the existing concrete floor. This concrete floor had to be removed and a new concreted the floor laid with a visqueen damp barrier.

The dry rot had caused the floor joist to split. We cut out timber that had been infected with dry rot + 1m past. New treated timber floor joist and wall plates were installed. These new floor joist were coach bolted to the existing floor joist. All these floor joist had to been again installed from below.

Our team of specialist dry rot contractors have experienced in the treatment of dry rot, wet rot & woodworm. We use only the best timber treatment products.

Our specialist timber treatment team cover all areas of the UK, including Manchester, Cheshire, Lancashire, Yorkshire.

We also installed a dry rot sensor into the brickwork. This dry rot sensor changes colour when dry rot is present. These dry rot sensors are ideal for visually checking for the presence of dry rot. The dry rot sensors can be put into brickwork, timber & concrete. Our specialist team of dry rot contractors continue to monitor the property for 1 year.


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