Getting a new roof and PIV considerations

DJ123

Hi

I am seriously thinking about getting a PIV installed in my house. I also need a new roof, which I am trying to sort out at the moment. Is there anything I need to consider in terms of the roof that will mean the PIV is as effective as it can be? For example, I would imagine that for a PIV to work well, it needs adequate ventilation from the outside. Is this something I can depend on with any new roof, or should I be asking the roofer to ensure they use particular materials?

Thanks in advance for any help and advice!

EssexExile

I would assume a ventilation system could vent through grills in the soffit. Of course it depends on your house, do you have soffits?

tacpot12

If you need a new roof, you should investigate systems that allow the solar panels to installed as an integral part of the roof, like this: 
GSE INTEGRATION - GSE IN-ROOF SYSTEM

DJ123

Thanks both for your help! I've had a look, and it does appear that this house has soffits, so I guess that's a good place for ventilation. I guess it's a good question for the roofer!

fenwick458

I don't think the panels are as effective when they are sunk into a roof, they get too hot and can't cool down. for every degree over 30 degrees they loose 1% percent efficiency or something like that, and if theres no airflow behind them, then once the sun is out they will be red hot in 5 mins.

DiddyDavies

tacpot12 said:

If you need a new roof, you should investigate systems that allow the solar panels to installed as an integral part of the roof, like this: 

fenwick458 said:

I don't think the panels are as effective when they are sunk into a roof, they get too hot and can't cool down.

The OP hasn't stated that they are considering getting any solar panels fitted. What they are referring to is a PIV  (Positive Input Ventilation) which is something that draws in fresh air from outside  (normally via the loft space) and feeds it into the property.

neilmcl

PIV example:

https://www.youtube.com/watch?v=Iy7szUUD_cM&feature=emb_logo

tacpot12

DiddyDavies said:

tacpot12 said:

If you need a new roof, you should investigate systems that allow the solar panels to installed as an integral part of the roof, like this: 

fenwick458 said:

I don't think the panels are as effective when they are sunk into a roof, they get too hot and can't cool down.

The OP hasn't stated that they are considering getting any solar panels fitted. What they are referring to is a PIV  (Positive Input Ventilation) which is something that draws in fresh air from outside  (normally via the loft space) and feeds it into the property.

Sorry about that, I read PIV as PV! Oops. 
I'm a big fan of PIV and MHRV in the right situations.