Using expanding foams to help meet H1 requirements

With recent changes to the requirements of the H1 energy efficiency for residential buildings, it is important to remember to insulate those areas that are normally missed by the insulation gods.

• Under base plates where packers may be used

• Small spaces within the framing that are too small to jam in the insulation

• As you wrap a framed building in corner junctions, that are then covered over, the packers and base places.

The other misnomer is that “if I just jam in insulation to fill a gap, this will sort it”. Well, Yes and No:

– Yes, it will potentially stop a draft of air coming through;

– No, unless the insulation is at depth, then it is most likely that the required insulation value will not be achieved. ALL insulation, whether it be mineral/polyester wool/PIR requires a thickness to achieve its advertised insulation value.

The fact that fibre-insulated products are the predominant source of insulation on most building sites, does not mean that those materials can get into every nook and cranny. Any gap remaining nullifies the effect of the insulation in that area, thereby reducing the overall efficiency of the insulation. Such areas may include:

The beauty of the Gorilla Expanding Foam range is that it is very easy to check out what the insulation value, of a given depth, of expanded foam will be for each product. This in turn gives both the builder/designer and homeowner the surety that they are doing all they can for the long-term efficiency of the design. Should you have

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