Not so long ago there was a thread about venting the attic to get rid of
the hot air to cool the house etc, well, while thumbing the dreaded
"screwfix" pages, I saw shiny "buble wrap" and wondered how good it is
at reducing radiated heat (and cold) from the roof tiles. Looks like
just the job to keep the attic cool(er) in the hot months.

Is it efficient? does it work the way it say on the tin?

Cheers
Pete

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Pet wrote:
Not so long ago there was a thread about venting the attic to get rid of
the hot air to cool the house etc, well, while thumbing the dreaded
"screwfix" pages, I saw shiny "buble wrap" and wondered how good it is
at reducing radiated heat (and cold) from the roof tiles. Looks like
just the job to keep the attic cool(er) in the hot months.

It will reduce radiated heat from the tiles, but the amount of heat that
gets into the loft by radiation is fairly small companred to the amount
that gets in by the tiles heating the loft air directly.

As for radiated cold...

--
Grunff

Scott Mills wrote:

Is he not taking about insulating the back of the tiles? If so that would
prevent the convection heating from the tiles into the loft space, although
by how much I don't know. I would have thought there are better products
about.

If the insulation is to go straight onto the back of the tiles, i.e.
between the rafters, then 50mm board (e.g. Kingspan) would be much
better than aluminised bubble wrap.

--
Grunff

"Grunff" wrote in message
...
Pet wrote:
Not so long ago there was a thread about venting the attic to get rid of
the hot air to cool the house etc, well, while thumbing the dreaded
"screwfix" pages, I saw shiny "buble wrap" and wondered how good it is
at reducing radiated heat (and cold) from the roof tiles. Looks like
just the job to keep the attic cool(er) in the hot months.

It will reduce radiated heat from the tiles, but the amount of heat that
gets into the loft by radiation is fairly small companred to the amount
that gets in by the tiles heating the loft air directly.

Is he not taking about insulating the back of the tiles? If so that would
prevent the convection heating from the tiles into the loft space, although
by how much I don't know. I would have thought there are better products
about.

Scott