Insulating a roof with no crawl space
 

Posted the following elsewhere and got no response...

Just bought a home built in 1950. The roof I suspect has minimal
insulation. To make the ceilings high, the builder has put in no
crawl
space and the rafters are visible from inside the house.

The house is only around 1000 sq.ft. It is in San Jose California.

I looked at the archives of this usenet group, and found discussions
on using foam blocks under the composite shingles. This seems fine
but it seems like it is like building a new roof, which could be
expensive.

I am thinking of the following alternatives:

- Add foam from within in between the rafters and blend them with the
architecture.
- Erect an awning (maybe I should call this a tent) that will cover
all of the roof for the hot summer months.
- Put solar panels. They would not only make shade put also generate
electricity for me. However, I hear that solar panels and convertors
etc. can be very expensive.
- Or, put a solar water heating system.

How would one insulate such a roof?

Thanks!

Deguza

Insulating a roof with no crawl space
 

"Kompu Kid" wrote in message
I looked at the archives of this usenet group, and found discussions
on using foam blocks under the composite shingles. This seems fine
but it seems like it is like building a new roof, which could be
expensive.

If you happen to need a roof, that is probably the best way to go. You can
buy foam laminated to osb for roofing.




- Add foam from within in between the rafters and blend them with the
architecture.

Second best.

Insulating a roof with no crawl space
 

Kompu Kid wrote:

Posted the following elsewhere and got no response...

Just bought a home built in 1950. The roof I suspect has minimal
insulation. To make the ceilings high, the builder has put in no
crawl
space and the rafters are visible from inside the house.

The house is only around 1000 sq.ft. It is in San Jose California.

I looked at the archives of this usenet group, and found discussions
on using foam blocks under the composite shingles. This seems fine
but it seems like it is like building a new roof, which could be
expensive.

I am thinking of the following alternatives:

- Add foam from within in between the rafters and blend them with the
architecture.
- Erect an awning (maybe I should call this a tent) that will cover
all of the roof for the hot summer months.
- Put solar panels. They would not only make shade put also generate
electricity for me. However, I hear that solar panels and convertors
etc. can be very expensive.
- Or, put a solar water heating system.

How would one insulate such a roof?

Thanks!

Deguza
I heard and seen a polymer foam sprayed right on top of shingles, its like
that expanding foam used to fill cracks. Sprayed about 4" thick.Not sure
how it would hold up though. Ultra Violet rays break down polymer. Might
check into it though.
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