With a warm roof the usual process is to split the insulation into two layers.
Under roof tiles insulation.
Senior engineer manager at icynene john broniek makes the case for the unvented attic assembly and why insulating the underside of the roof makes sense.
You should leave the space under the roof tiles free from insulation to give adequate ventilation so that you don t get condensation or water coming through the tiles.
The roof clay tiles i think is a bit shot as in there s loads.
Onoff 4 221 onoff 4 221 advanced member.
It depends whether the roof is being insulated at the rafters or at ceiling joist level.
Under roof tile spray foam insulation acts to add a barrier between the inside of your home and the harsher outside protecting your property and providing significant long term benefits.
Make sure there are no huge gaps where the breeze is felt as there could be other problems that need to be addressed first.
If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters.
Under roof tiles spray insulation.
Fromunder kent posted march 2 2018.
Under tile sheeting is placed under the roof tiles ensuring a perfect proofing membrane for all elements which affect housings and developments.
It is also used for the prevention of draughts and dust penetration into the roof spaces through tiles and slates and prevents damage to ceilings rotting of timbers and corrosion of plumbing.
The insulation is installed under the roof in the slope.
Roof tile insulation is primarily used to protect your roof against the elements and reduce heat loss.
You need to leave a gap to the rear of the insulation between the membrane and the insulation to allow air to circulate around the roof space.
You could then simply clad the area with plasterboard etc.
Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.
Tiles on battens on breathable roofing membrane over the rafters is normal construction as far as that goes.
By onoff march 2 2018 in roofing tiling slating.
You can use batts polystyrene slabs expanded polystyrene or spray foam to insulate your roof or loft space.
Leofric 1 mar 2019 3.
This piece originally the quest for greater energy efficiency in buildings has led to increasing interest and need for insulation improvements in hvac equipment more airtight construction new materials and assemblies.