Loft Conversion Roof Insulation Building Regs

Insulation batts ready to go in loft conversion if you do not have the height in the room to insulate under the rafters then insulating above the rafters by taking off the roof tiles and insulating beneath is an option.

Loft conversion roof insulation building regs.

4 1 full plans application this is often thought of as the traditional way of applying for. It is not possible nor is it intended that this booklet should cover every aspect of the design. Currently building regulations for loft conversions dictate that the u value of the roof must be 0 18w m2 or lower. When refurbishing an attic or loft space there is a requirement to comply with the appropriate building regulations standards for the location of the building.

Again this should be insulated to the recommended depth of 270mm. If you are pursuing a renovation project and wish to renew more than 25 of your roof space your loft insulation must also meet the standards required by these regulations. The extension does not reach beyond the outermost part of the existing roof slope at the front of the house. Building control guide to loft conversions 5 4 0 obtaining building regulations approval loft conversions must comply with the building regulations.

Loft conversion building regulations and planning permission. Building regulations for insulating a roof heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls. Care should be taken not to block any ventilation at the edges eaves. It s important to make sure that noise between rooms is sufficiently insulated.

3 loft conv rev 2 2007 1 introduction 1 1 this guidance booklet considers the extension of a typical 2 storey dwelling into a 3 storey unit by the addition of a loft conversion within the existing roof space. It is also an expensive option unless you are already having the roof covering replaced. Building regulations approval is required to convert a loft or attic into a liveable space. There are two methods of making a building regulations application as follows.

In england the required minimum u value for pitched roofs insulated at rafter level is 0 18 w m k whilst for flat ceilings the minimum is 0 16 w m k. This equates to a thick 270mm layer of fibre or wool insulation about 175mm of rigid board insulation or around 125mm of high performance spray foam.