What is Pre-Completion Testing?
Part E puts the onus on the builder to demonstrate that the stated acoustic rating has been achieved. The requirement of the Part E document is, therefore, that 10% of all new dwellings should be Pre-Completion Tested on-site. Testing applies to separating elements between dwellings only and is not required between living spaces within dwellings, nor for corridors, stairwells or hallways. Testing needs to be carried out by a test body with appropriate third party accreditation.
What are Robust Standard Details?
To avoid the need for Pre-Completion Testing the industry and, in particular, the housebuilders led by the HBF, have sought approval of a series of performance tested solutions which will be deemed to satisfy Part E. This is in relation to separating walls and floors using existing construction products and systems. These solutions are called Robust Standard Details (RSD’s)
More on Robust Standard Details
Robust Standard Details are performance tested and proven to work in the field. They are currently awaiting the imminent approval of the Government. As previously mentioned a delay in the implementation of Pre-Completion Testing for New Build dwellings to 1 July 2004 was granted to facilitate the proper consultation and completion of the process leading to the agreement of Robust Standard Details.
What are Proprietary Systems?
Proprietary Systems are those developed and tested by manufacturers using specified components that achieve a certain level of performance.
Within the suggested constructions in Part E, a 10kg wallboard is mentioned. Do I need to use one?
Within the New Build market the introduction of Robust Standard Details means that standard 12.5mm wallboard with a minimum mass of 8kg/m2, where used as part of an approved system, will be satisfactory for separating walls and floors.
For separating elements in a Material Change of Use suggested solutions may not be applicable to the existing construction being worked on. It is therefore recommended that advice should be sought from Local Authority Building Control to determine an acceptable construction method prior to commencement of work.
For internal partitions and floors, where the Proprietary Systems approach is accepted by Local Authority Building Control, systems are available using current standard 12.5mm wallboard that would satisfy the requirements for both New Builds and Material Change of Use.
If I need to use a board with a minimum weight of 10kg what boards can I use?
If you choose to build under the Part E construction suggestions and use a 10kg board, Knauf Drywall offer a range of boards to meet this requirement. They will be easily recognised with E10 on the edge and the centre line marked with a blue E. This will assist with the board selection for a range of applications, whether it is vapour, moisture, fire or impact resistance, as well as enhanced sound reduction.
Table 0.3 indicates the appropriate boards and properties.
|Board Type||Application||Weight kg/m2|
|Knauf Standard Wallboard 15mm||General purpose||10.2|
|Knauf Plank||Main layer in acoustic systems||13.2|
|Knauf Vapourshield 15mm||Plasterboard with the addition of vapour check||10.2|
|Knauf Fireshield 15mm||Superior fire resistance||10.7|
|Knauf Fire Moistureshield 15mm||Superior fire and moisture resistance||11.2|
|Knauf Core Board||Central board component in lift and staircase enclosure systems||16|
|Knauf Denseshield||Superior impact resistance and durability||
|Knauf Soundshield (Knauf Sound Moistureshield)||Greater levels of acoustic performance (and moisture resistance)||