Andy Parker

Andy joined Carpenter Oak & Woodland in 2005, to help the company provide a greater focus on customer service, marketing and sales. Andy’s background is varied indeed – helping him to bring a wide range of skills to the team. An avid lover of carpentry, Andy has also spent time in furniture restoration and conservation – something he still enjoys as a hobby.

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Previous posts

• Musings on Arts and Crafts
• Environmentally responsible building
• Why oak?
• Wood Awards
• Interbuild 2007

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By Andy Parker

All too frequently customers are told by timber framing companies that you can’t glaze directly onto green timber frames but must have the glazing in its own joinery frame and set into the structure.  This just isn’t the case and they’re often relieved to see the system we use.  Indeed we would strongly recommend against setting the glazing into the green frame because as the timber dries and settles over time the movement in the timber can crush or twist the glass to destruction. 

We use a double seal, pressure equalised system similar to that used on multi storey office blocks.  In simple terms the ‘double seal’ means that water is allowed to penetrate the first seal and then drain away through a series of channels.  ‘Pressure equalised’ means that as water is allowed to escape from the channels air is allowed in which prevents the build up of water in the channel through surface tension.  If this isn’t allowed to happen buffeting of the glass by the wind can set up a pumping action and water in the channel will be forced past the second seal.