Ask The Expert
The Questions
Q: What is the difference between a SAP rating and U-values? Are there any minimums now that Part L is changing?
A: Ken Francis, technical manager at Pittsburgh Corning
Q: When do I need to upgrade the insulation on a refurbishment?
A: Ken Francis, technical manager at Pittsburgh Corning
Q: In terms of value-for-money, how do cast iron, ‘solid’ aluminium, formed-on-site aluminium, glass fibre and plastic gutters compare?
A: Graham Smith, sales director at Brett Martin Building Products
Q: How permanent is a black finish on each of the above?
A: Graham Smith, sales director at Brett Martin Building Products
Q: Fall on gutters – can I use zero fall if I go for a section with a lot more capacity than I need?
A: Graham Smith, sales director at Brett Martin Building Products
The Experts
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