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We were recently called out to listed building in Alnwick, Northumberland to inspect a property for fungal growths appearing on window frames, the property in just round the corner from the historic Alnwick Castle where parts of Harry Potter were filmed, the owner of the property was concerned about reports from the current tenant that fungus was growing on the timber sash window, once the survey was carried out Dry Rot (serpula lacrymans) was identified and present on both the window frame and also affecting the timber lintel above the window, we were instructed immediately to carry out remedial works. You can see from the picture below how much damage has been caused to the timber lintel, due to the severity of the rot we had to prop the stonework with acro props and insert the first of four concrete lintels.

Dry rot repairs

The current timber lintels were a considerable size but the dry rot had taken hold and rendered them useless, we could snap them with our hands they were that rotten, below is a picture of one of them, see the cube/square like shapes on the timber, this is known as cuboidal cracking and is typical of dry rot (serpula lacrymans).

Dry rot repairs

We removed the old timber lintels and replaced them with concrete lintels (see below), irrigation of the surrounding stonework then took place to kill off any dry rot spores, once this was completed the plasterwork was reinstated and made good, the old sash window is to be replaced as its beyond economical repair, once a replica is made this will be fitted and the job complete, Dry Rot can cause significant damage to timberwork in a short space of time, if you suspect you have dry rot give us a call a 0191 4159471 and we’ll carry out a survey straight away.

Dry rot repairs