This is a bit of a disjointed / rambling post (even more than usual
), started last night - can't really work
out what I was trying to say / wish I hadn't bothered
B&Q Aluminium Thermal Foil M/P Insulation Silver Length 7.5m x Width 600mm, 0000003718001
Originally Posted by unbusted67
What is this bubble wrap insulation everyone talks about? can someone send me a link of what you mean? I don't think I can afford Armaflex. How much is a roll? When I google
it all I got was sleaving for pipes.
£12 for 7 1/2 Meters (yards). It's like plastic bubble wrap, except made of Bacofoil
.....and the air bubbles don't make the same satisfying pop as in plastic
Originally Posted by Greggegner
We did our last boat with the foil bubble wrap foil insolation. It was great, both in the heat (Charleston SC) and in the cold, down to18f. We also found the boat much quieter. on the present boat we use it to cover all the ports
and hatches. I hoped that the foil would improve the boat radar
I am glad to read that
Being in Northern Europe
I am also after partly to keep cool, and partly to keep warm. My insulation efforts ground to a halt over the summer, but the good news with that is I could try and get an idea of how different approaches worked over time by a few test pieces....annoyingly though not the greatest of summers weather
wise, last year it did
get well hot onboard, ths year not - not sure how much that is down to me though.....
My approach has been that anything I do has to:-
A) be easily removable (for access to the deck
/ cabin roof (repairs or improvements) - or simply if I need to try a better idea).
B) is manmade and can't get damp / start rotting.
C) is fairly cheap (no point spending big money
when I don't know
what works for me) and DIY
Essentially "all" I have at the moment is one layer of foil bubble insulation ontop (under?!) white painted deck underside (and the headlinings not in place) all taped into place with foil tape. Whilst I knew that a few mil of foil would not be the sole answer I was curious to see what effect it had alone.
The answer is I think, not much
(1 layer) - and to touch is warm (as the underdeck is / was) but the heat seems more uniformarly spread and less fierce (not to say it was ever too hot to touch, like it can be on deck) - I would be curious as to how much the silver reflecting bounces heat back out - I get the feeling that it is some, but can't prove that
In most places I have another 1/2" (1 1/2cm) to play with (excepting that I do have places (deck beams etc) where I only have a minimal gap to play with - so there will always be a heat jump? / sink? as a weakness in whatever I do, but just like an old cheap leaky wooden boat - just have to settle on plugging the major leaks
and living with a few smaller ones, even if the price
of that is buying
(and in the insulation case, that will be more ventilation and heating
than 100% perfection would require).
I have also painted the underside of each roof panel (foam covered ply) white. whether that reflects anything is another thing
In practice I suspect that the biggest difference I have (presently) made to the internal heat / stuffiness onboard is a) no hatch
/ door in place
and b) internal window shades made out of vinyl foam and a tight fit to the window frames. I have 2 versions, vinyl on both sides and another with foil bubble wrap facing outward - to be honest I can't really tell the difference on touch alone, they probably both work
from the sunlight simply not heating
up the air inside.
My present thinking is some thick insulation I have seen - same foil bubble wrap but sandwiched around manmade fibre, comes on a roll but more panel like......I might put a thin barrier between the 2 layers (I might have some spare vinyl floating around)......but in any event will be using more foil bubble wrap as a "filler" for any nooks and crannies.
Plan is to add a lot more ventilation - but that will be next year, once the hatches go back
(not a high crime area around here
Additional plan is a deck awning - or partial covers on the deck / over windows, possibly using the foil bubble wrap (same way it is used for car windscreen shades).
I am a kinda working on a "every little helps" basis, coupled with a "making things up as I go along" approach (even if I prefer the term "a considered approach"
). FWIW I discounted spray / permanent foam for access reasons and possible future removal
(could be me
and I have seen wet / damp / moldy foam before and it's a PITA to remove the last 10%) and also as I don't know what works....but for the right boat (especially a new build or steel) it would be my first choice in most places.
and just to say when I say underdeck am also talking about hullsides (to waterline) and decks as well as simply saloon