Floor Board Thickness For Loft Conversion

A new floor system is installed using a frame trimmer joists to support the floor joists that span the width of the loft.

Floor board thickness for loft conversion. A basic floor system is installed in about 10 stages from preparation to boarding the floor. And either 18 or 22mm thick. Thanks ps the loft will be two bedrooms and a shower room. Clearing the loft area of all debris insulation struts and temporary boards to expose the ceiling boards.

As an example a floor space that totals 70 sq. My loft conversion is under way and the floor as quoted will be chip board. Weight allowed on loft conversion floor. Discussion in floors stairs and lofts started by sjoyce666 9 sep 2007.

Pine is the best material and the floorboards are usually sold in lengths of around 2 meters with a depth and width of around 18 x 121 mm. This is 5 times more than a loft used for storage on loft boards or loft panels. I noticed this is the floor that all the companies that i received a quote from specified. Standard boards are commonly available in two sizes.

A floor in a loft conversion must be designed to carry a minimum of 150kg per square m. I have seen the loft board packs available from diy stores. 2 400 x 600mm and 1 220 x 320mm. As above where for loft flooring or loft storage the ceiling or loft floor is designed to carry only 25kg per square metre.

To prevent homeowners from building strangely configured and potentially dangerous spaces. Flooring for dead loads may not be sufficient for live loads the loads created by people and the features of living space. Floor space dimensions. The boards are 4ft so would span two sets of joists.

In one scenario this would translate to a bare minimum of 7 x 10. Attic joists for live loads attic joists that are made from 2x8s may be acceptable for building your attic floor but because every room is variable there are no absolutes. Have tried loft packs but theyr only 4x1 and never seem to line up with joists. Joists in attics that were never intended for the installation of flooring or conversion to a living space are often 16 inches oc or 24 inches oc.

Very much in vogue at the moment for loft conversions this is the more costly option for the loft flooring. I normally use 18mm t g chipboard and have had no problems unfortuanately these come as 8x2 sheets which can be awkward to get into the loft. Those figures are for compliance with building regulations whereby the boards would be used as flooring in a habitable room. Take measurements in metres this makes it easier when you are buying boards.

At least 7 feet in any direction. 18mm is fine for storage you could try 22mm but consider the extra weight. Would still not be allowed because its 4 x 17 5 dimensions. Is a chip board floor as good as any other here or are there better options for a loft conversion.