I have a soil stack vent that goes from the bathroom and is vented outside the roof space.
It is boxed in with the timber/plasterboard. The issue is it is unsealed in the attocso the whole section is internally ventilated. This also causes the 1st floor joists to be draughty and air to escape through the bathroom openings. I did some calculations and will lose about 450 watts from it with temps at -3c which is too much for my low temp heating system.
Would it be acceptable to fill it in with loose-fill mineral wool ? This will stop ventaliation of course but will increase heat retention.
Currently use a PIV system to ventiliate the property, and will be moving over the an MVHR sometime next year.
It is boxed in with the timber/plasterboard. The issue is it is unsealed in the attocso the whole section is internally ventilated. This also causes the 1st floor joists to be draughty and air to escape through the bathroom openings. I did some calculations and will lose about 450 watts from it with temps at -3c which is too much for my low temp heating system.
Would it be acceptable to fill it in with loose-fill mineral wool ? This will stop ventaliation of course but will increase heat retention.
Currently use a PIV system to ventiliate the property, and will be moving over the an MVHR sometime next year.
