Hi
We've recently moved into a building we've been renovating for some time. The roof is still uninsulated so will be sorting that very shortly. I'm also getting my brother-in-law, who's an electrician, to fit a Greenwood CMEV.4eHT MEV system in the loft, which will extract from the kitchen and bathroom.
I have a couple of things I'm not sure about, though:
- I'm going to use round rigid ducting; for the kitchen this is easy as the pipework will run perpendicular to the joists, so I'll just get insulation for that. The bathroom ducting though will run parallel between a couple of joists under an area in the loft which will get boarded, in part to provided access to the Greenwood. If I get the insulation company to put in the minimum depth of 270mm insulation, is it permissible / reasonable to have this insulate that ducting until it emerges?
- I'll also be running rigid ducting from a cooker hood. Part of this will be a vertical uplift into the loft. Will I need a condensate trap for that, assuming that also goes under loft insulation and the pipe itself gets insulated when it emerges?
- Is it better to vent the Greenwood out through the side wall of the property, or does it have to go through a roof vent? The former seems less hassle ...
- If the former above is okay, are standard louvre vents okay and if so, would I need backdraught prevention?
I should mention that this is a bungalow so only going through plasterboard into the loft. I don't if this means I need any form of fire protection for regulations ... ?
Any / all advice gratefully received
We've recently moved into a building we've been renovating for some time. The roof is still uninsulated so will be sorting that very shortly. I'm also getting my brother-in-law, who's an electrician, to fit a Greenwood CMEV.4eHT MEV system in the loft, which will extract from the kitchen and bathroom.
I have a couple of things I'm not sure about, though:
- I'm going to use round rigid ducting; for the kitchen this is easy as the pipework will run perpendicular to the joists, so I'll just get insulation for that. The bathroom ducting though will run parallel between a couple of joists under an area in the loft which will get boarded, in part to provided access to the Greenwood. If I get the insulation company to put in the minimum depth of 270mm insulation, is it permissible / reasonable to have this insulate that ducting until it emerges?
- I'll also be running rigid ducting from a cooker hood. Part of this will be a vertical uplift into the loft. Will I need a condensate trap for that, assuming that also goes under loft insulation and the pipe itself gets insulated when it emerges?
- Is it better to vent the Greenwood out through the side wall of the property, or does it have to go through a roof vent? The former seems less hassle ...
- If the former above is okay, are standard louvre vents okay and if so, would I need backdraught prevention?
I should mention that this is a bungalow so only going through plasterboard into the loft. I don't if this means I need any form of fire protection for regulations ... ?
Any / all advice gratefully received
