I am erecting a conservatory next week and have had conflicting advice about using damp proof membrane.
The conservatory floor is going to be laid on what was originally a slabbed patio.
I have to level the patio first as it has a slight falloff away from the house wall.
I want to lay insulation under the new chipboard floor and this is where the advice differs.
One suggestion was to level the patio with sand and lay 100mm of foil backed insulation directly on the sand and the flooring on top of the insulation.
A second was to level the patio and then lay a dpm over the sand followed by the foil backed insulation.
A third suggestion was to lay further dpm over the insulation (to prevent condensation?)
So my question is - which of these three suggestions would you guys agree with?
The conservatory floor is going to be laid on what was originally a slabbed patio.
I have to level the patio first as it has a slight falloff away from the house wall.
I want to lay insulation under the new chipboard floor and this is where the advice differs.
One suggestion was to level the patio with sand and lay 100mm of foil backed insulation directly on the sand and the flooring on top of the insulation.
A second was to level the patio and then lay a dpm over the sand followed by the foil backed insulation.
A third suggestion was to lay further dpm over the insulation (to prevent condensation?)
So my question is - which of these three suggestions would you guys agree with?
