In general yes, if installing as a sheathing board a breather membrane should be used as stipulated in third party Agrément certificates.

Euroform have extensive data showing the load capability of Versafloor products across the thickness range and over various spans. Please ask Euroform technical sales for further details.

Yes, provided boards are stored and installed correctly they can be left exposed for the build period for a given period of time. Please check with Euroform regarding the specific product that you are interested in for details of the maximum period of exposure.

Euroform do have boards such as Versaroc that are A1 non-combustible, yes.

The building regulations for fire currently allow materials of A2-s1,d0 or better (A1 non-combustible) to be used in external walls above 18 metres. So Euroform do have products that can be used in this respect. Some Insurers or third parties may require more specific performance so this must be considered and checked. Some Insurers may insist on A1 materials only for example.

Building boards may contribute towards the securing of external wall insulation products. The amount of contribution (if any) should be established by engineers following site pull-out tests using the fixings specified to install the insulation.

Individual boards do not carry a period of fire resistance. A period of fire resistance is always achieved by a system following a fire test (for example in a steel framed wall it would typically comprise internal & external boards and insulation to cavity or to the outside). Other considerations would be the direction of fire and the possibility that the wall may be load bearing. A wall tested from one direction will not necessarily provide the same level of fire resistance from the other side.