Attic storage & insulation?

My builder has put insulation in the ceiling between the attic and the ceiling underneath and along with external insulation this has resulted in the house getting a BER of B1. However, I intend to store a good deal of things in the attic and it's now very cold compared to the rest of the house. What sort of temperature should it be? Could this result in clothes etc become mildewed? What will I need to do now to make the attic a place for long-term storage than won't damage items? Thanks a million.

Water John

Wouldn't think so. Where is the moisture to come from? I presume its floored over the insulation. My attic only has the floor insulated and there is no problem.

Gumbo

Could you insulate in between the roof rafters?

kceire

kceire wrote: »

Could you insulate in between the roof rafters?

That's what I'm not sure about. Somebody said not to insulate between them, but as it's a while ago I'm not sure of the reason. If we were to do so, would I have to put something over the fibreglass/insulation to stop it circulating in the air up there (I've put new attic flooring down on the insulation between the attic floor and ceiling below).

sydthebeat

[Deleted User] wrote: »

My builder has put insulation in the ceiling between the attic and the ceiling underneath and along with external insulation this has resulted in the house getting a BER of B1. However, I intend to store a good deal of things in the attic and it's now very cold compared to the rest of the house. What sort of temperature should it be? Could this result in clothes etc become mildewed? What will I need to do now to make the attic a place for long-term storage than won't damage items? Thanks a million.

Having a very cold attic in this weather is a good sign, it means the insulation is keeping the heat in the house.
Any clothes stored in the attic should be well wrapped / vacuum packed regardless.

Calahonda52

Deleted User wrote: »

My builder has put insulation in the ceiling between the attic and the ceiling underneath and along with external insulation this has resulted in the house getting a BER of B1. However, I intend to store a good deal of things in the attic and it's now very cold compared to the rest of the house. What sort of temperature should it be? Could this result in clothes etc become mildewed? What will I need to do now to make the attic a place for long-term storage than won't damage items? Thanks a million.

Deleted User wrote: »

That's what I'm not sure about. Somebody said not to insulate between them, but as it's a while ago I'm not sure of the reason. If we were to do so, would I have to put something over the fibreglass/insulation to stop it circulating in the air up there (I've put new attic flooring down on the insulation between the attic floor and ceiling below).

So if I read this right, the attic is already floor after the new insulation went in.
and you want to store stuff up there.

Any chance of a few pictures?

The critical issue is what space you have.

The reason they said not to stuff GF between the rafters is that I suspect you have black felt and thus unbreathable.
The attached picture is just for discussion, instead of putting the rigid XPS between the rafters you could just sheet the rafters, and the knee wall as in the picture on the inside face and make an igloo out of it, c/w an insulated door at one end and a solid wall of insulation at the other and then heat it with a low output rad heated from the CH system with a good quality wall mounted stat, set at 14 degrees controlling the zone valve.

Maybe OTT but
[TV and fridge for beer optional ]

OK, thanks so far. Here are some photos:
Attic 1; Attic 2;Attic 3;Attic 4;Attic 5;Attic 6;Attic 7.

Calahonda52

Okay,

no picture of the apex or of a long view picture down each way from the attic hatch

the purlins and struts and other stuff don't make my ideas work easily so I think you need to think about putting in an insulated knee wall under the 6 by 4, or bigger purlin.
When we see the apex photo we can say more