SAP Energy ratings for you
Have you , like me, heard people who live in recently built houses complaining of damp? Such conversations have grabbed my attention especially where the houses have been recently built, according to SAP 2009 or SAP 2012 specifications (2010 or
When you replace one of your windows with double glazing, why doesn’t the house fall down? This is because there is a lintel above the window that holds up the bricks. This lintel has to go right the way through
Many people like to build their own houses. This is very attractive financially as the cost of land and materials can be a lot less than the cost of a finished house. Self building has become more difficult due to
A customer asked me if they should get the SAP calculation completed before they started building. The answer is yes. You should have a SAP calculation while you are still at the planning stage before you start building-I would advise
The brightness of an electric light is measured in lumens. A 60 watt incandescent light bulb has a brightness of 800 lumens. The efficiency of an electric light is measured in lumens per watt. Incandescent light bulbs have an efficiency
The central heating in my shared house is controlled by a white plastic box on the wall. This winter it broke down. I spent several hours downloading the 20 page manual from the internet and reading it. So far I
We’ve known about the kind of problems that happened at Grenfell Tower for years, so why has no one done anything about it? Some insulation companies have tried to do something about it, and much of the insulation used today
One of the major sources of heat loss is through windows and doors. A typical window or door has a U value of 1.60 (a good quality modern type) and that’s 5 times as much heat loss as a wall
Vacuum insulation works in the same way as a thermos flask. The thermos flask uses a vacuum between two glass walls in order to prevent heat travelling by conduction and silver on the walls to reflect radiant heat travelling as
Modern construction techniques produce housing that is particularly airtight. Old houses have an air pressure of Q = 15 so you didn’t need to worry about it. Modern construction produces an air pressure of Q = 5, sometimes achieving Q