MEETING PART M OF THE BUILDING REGULATIONS

After consultation with housebuilders, IG have extended the range of high performance doors to include a new door system that provides both a new door size and amended adjustable threshold. These enable full compliance with the revised Regulations in a way that meets housebuilders needs for an aesthetically acceptable solution with minimal impact on building methods.

Part M - the Requirements
Threshold - the Regulations intend that each dwelling is to have a level threshold to one entrance. In detail this is defined as:

	There shall be no vertical change of threshold height of more than 15mm
	Any vertical change of height greater than 5mm must be rounded or chamfered
	The slope of the sill shall be no greater than 15° Door Width - the Regulations intend that the entrance door shall be wide enough to allow wheelchair access. This is defined as:
	There shall be a clear opening width of at least 775mm

Housebuilders’ Requirements
Research provided a clear indication that in meeting the new Regulations housebuilders wanted the height from floor to lintel to remain the same (i.e. 2100mm). Given the options of either increasing the head sections of

frames or increasing the height of doors, there was again a very clear preference for increasing the height of the doors. A wider door is available to meet Housing Corporation Standards where required.

Please contact IG for details.

The IG DOORS Solution
Designed to provide a cost-effective and aesthetically acceptable method of meeting Part M, the new IG door system comprises a door 845mm wide by 2000mm high within a frame with specially adapted sill section. The IG door system (see diagram) incorporates the patented IG adjustable threshold for the prevention of draughts and water penetration.

The IG door system provides essential benefits:

	Practical, cost effective solution to Part M
	Avoids the need to cut blockwork
	Avoids the need for unsightly frame extension at door head
	Easy to install on site

Keep It Simple
To avoid site complications, IG Part M door systems should be used for both front and rear entrances.