Old style loft hatch insulation in plastic bag?

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Have read that people often just staple plastic bags full of insulation to old-style loft hatches to insulate them, is this allowed?

Wondering if there are any fire rating requirements relating to this I know loft insulation is normally fire rated.

Or is there a better way to accomplish this?
 
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Wondering if there are any fire rating requirements relating to this I know loft insulation is normally fire rated.
There's no requirement under B Regs. I just glue a piece of celotex like ptarmigan.
 
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The risk of fire is from the room below not the loft.

It's bizarre that the ceiling needs to be 30 minutes fire rating, but a 600mm square of it can be rice paper if you wanted it.
 
Would 50mm insulation board be sufficient any thicker it costs a fortune?
 
How about 2x 50mm?:rolleyes:

If Celotex or similar, that will equal around 300mm of quilt.

Duct tape the edges.
 
A loft hatch is usually only around a third of a square meter, so draughtproofing is more important than insulation.
 
Have read that people often just staple plastic bags full of insulation to old-style loft hatches to insulate them, is this allowed?

Wondering if there are any fire rating requirements relating to this I know loft insulation is normally fire rated.

Or is there a better way to accomplish this?
That's pretty what I did - works very well, but draughtproofing the opening makes a much bigger difference
 
I have a hatch with a ladder on top. I made a "cover" from 100mm celotex glued with foam. It sits on the loft floor and the ladder fits inside it.
My own theory is that any poorly insulated areas of ceiling act as a "chimney" for heat loss. Same with poor insulation in the eaves - the heat just goes up, across and out wherever it can. Made worse with blown CWI - after 6 months it settles and you have a foot of un-insulated wall upstairs.


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I have a hatch with a ladder on top. I made a "cover" from 100mm celotex glued with foam. It sits on the loft floor and the ladder fits inside it.
My own theory is that any poorly insulated areas of ceiling act as a "chimney" for heat loss. Same with poor insulation in the eaves - the heat just goes up, across and out wherever it can. Made worse with blown CWI - after 6 months it settles and you have a foot of un-insulated wall upstairs.


View attachment 221697

Doesn't that make it harder to get into the loft though?
 
Cut the celotex slightly oversized so it seals against the hatch anything 20-50mm will do a good job. But so will draught excluder. Have a wonder around your neighbourhood- you are bound to find something in a skip.
 
Thanks all will hunt out some Celotex or similar.

Yes draughtproofed already which has made a big difference.
 
This is what I did with mine.... Cut the insulation to size, included a slope at the end where it would catch opening, and some notches where the ladder sat. Then foil taped all the edges so it didn't make a mess every time I opened it.

4 dots of Sticks Like ****, popped it on then closed the hatch for 24 hours.

Then added brush strip all the way around.

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