Penetrating damp solved with modular cavity trays

 

Rainwater pouring into a 1970’s apartment in Leeds….

I thought I’d just post a quick one about the use of these handy modular trays.

remedial-cavity-tray-installation-stops-damp-in-Leeds

I specified them on a site in Leeds, where tenants of a block of apartments had real problems with rainwater penetrating over window and door heads.  The problem was inherent in the design, which included reinforced concrete beams with brick and block infill. The beams bridged the cavities so any water penetration through the external cladding inevitably collected at the beams; saturating the concrete and in some cases dripping through into the apartments.

Ad-hoc weep holes were drilled and water repellents had been tried before, with limited success.

I specified the Z-LED refurbishment trays and we installed them just a few weeks ago. The feedback from the customers is fantastic as they have put up with water streaming into the apartment every time they get westerly rainfall – not any more though.

Despite the terrible weather since the work was done – the problem is solved.

The units come in 550mm lengths which are sequentially installed and have self-sealing butyl strips which guarantee a leak free joint.  Each unit has an in-built drip feature so they are never further than 500mm apart – great.

remedial-cavity-tray-installation-in-Leeds

I use Safeguard’s Storm Dry water repellent cream on many sites with great success, particularly for porous stone and brickwork, but in cases of severe ingress and tricky construction details, a traditional invasive approach is justified and effective.

 

Dry Rot.

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Copyright © 2010 Preservation Expert. Legal Stuff: All the advice and information in the posts on my blog is made in good faith and is based on my experience and knowledge at the time of writing. However, nobody is infallible and whilst I’m confident that most of what I write about preservation issues is accurate, there’s a good chance there’ll be an error or two somewhere. I do change my mind about stuff, as I gain more experience. In view of this you must make your own decisions on whether to follow any advice I write and think about this; I could be wrong. No responsibility will be accepted by the author for any losses anyone may suffer as a result of any mistake or for the consequence of any action you take as a result of reading this blog. If you do suffer a loss, resulting from anything I’ve written, a verbal heartfelt apology will be your only compensation.