Fan on the loft?

Grow shop jist told me to cool his loft he stuck a vent in the house and vebted the attic heat down and out a windoe.

As the eves an gaps are there that was the intake and a 6inch fan sucking from the top and just str8 out he said he went from 40c to 20c in half an hour....

Is he spinning wool? Or shal i go start ventin my loft space itsself also lol?

You're not making sense first of all.

Secondly, I'll answer.

Heat raises. Period.

If you remove heat from the top of a dwelling the lower half will cool.

Insulation helps maintain ambient temperature

If you can effectly remove high heat within the environment the overall environment heat medium will decrease

JCGreen81 said:

You're not making sense first of all.

Secondly, I'll answer.

Heat raises. Period.

If you remove heat from the top of a dwelling the lower half will cool.

Insulation helps maintain ambient temperature

If you can effectly remove high heat within the environment the overall environment heat medium will decrease

Click to expand...

How am i not making sence?

He said he put a fan in the loft not in his tent just the loft to pull hot air out.

Im asking he seems to think a 6inch rvk fan suck the loft down to room temp fast...


Im asking cause if it was that simple surely everyone would be commenting this to lofters and i aint seen or can't find any 1 doing it or talking aboit it

Venting the tent yes ofc.
I understand venting loft will help.. But 40c to 20c?

If he's using LEDs maybe

What. Nah hes hps but hes om about the tempbthebloft gets to in loft space is 40c ajd he cools it down tob20c using 1 fan to pull hot air out

2cent said:

What. Nah hes hps but hes om about the tempbthebloft gets to in loft space is 40c ajd he cools it down tob20c using 1 fan to pull hot air out

Click to expand...

Have you got any loft ventilation anyway?

My attic area did not have any ventilation so I upgraded my soffits and fitted some 70mm soffit venting discs all the way along my soffits.

then I found a blade system that has 2 pieces of plastic moulded together to form a connected piece


I fitted these all along the over Laps in my felting.

by doing this it creates through air flow from soffits to the vents in the felting.

if you are kingspan and boarded in your attic then the only advice I would give you would be to add a tile vent into your roof tiles and use a bathroom extractor etc or similar to remove the excess heat out of your attic.

Yes clearly attics build up stupid heat when uninsulated and having active air exchange up there will cool the whole space making it a slightly better environment.

Bare tiles. So ive rockwool n plastered worked really well. Max temp hot days like 25 now jisy makes it hard when hps turns on.

So think i might fan the heat out then

Do you have soffit vents around your house? Cutting a few in is easy and can help a ton! Also it sounds like you want to put a fan in your gable vent. Another option is adding roof vents but this adds holes in your roof which is unwanted, but may make it so you don’t have to pay to run the fan

if you insulated the slopes of the house you may want to add prop-a-vents in between the soffit and the attic to allow air to channel up easily as well.