achieving cross ventilation in a flat roof garage conversion

[capital1965]

I have searched high and low and not been able to find a solution to my problem. I want to convert my garage to a bedroom. It is the link between two bungalows with traditional pitched rooves.

My problem is that the joists run at a right angles to the normal path of cross ventilation, across the width of the garage. This is further complicated by the fact the back of the garage backs onto the utility room which run the width of the garage apart from a door opening to the back garden. Building regs require cross ventilation of the void.

I can't be the first person to face this problem. Does anyone have any suggestions?

Thanks in advance.

 

[rssteve]

Warm roof seems the easiest way.

 

[John D v2.0]

Yes warm roof is easiest if you're reroofing anyway, if not, you'll have to counter batten under the joists front to back and then insulate under that, but you might end up with no head room by the time you've also battened and insulated the floor. That lot will take off 250mm of head room in total.

 

[^woody^]

With a garage conversion, all you need to do is stuff the roof void with insulation, no air gaps, and that's it.

 

[John D v2.0]

Wrong thread mate and lay off the drink before coming online

 

[garyo]

There was a similar thread in here a couple of weeks ago. Search for 'hybrid roof' it may be your answer if your BCO is happy with them.

 

[noseall]

With a garage conversion, all you need to do is stuff the roof void with insulation, no air gaps, and that's it.

As long as ...
1. The flat roof is in good nick and does not need replacing.
2. The roof height is acceptable (often garage roofs are unfeasibly low) and does not need raising.

If any of the above points are relevant go with a warm deck and have a drop down to your neighbours side.