Search: Posts Made By: dubman
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01-12-19, 01:43 PM
Replies: 10
Views: 601
Posted By dubman

Ok, I'm having second thoughts about adding the...

Ok, I'm having second thoughts about adding the extra cable. And not sure about the switch on the negative terminal ether because I think it may leave some of the terminal a bit exposed to being...
01-12-19, 11:05 AM
Replies: 10
Views: 601
Posted By dubman

Adding battery on/off switch to car?

Hi, I want to extend the negative cable to the car battery terminal, so that I can install an on/ off battery switch inside the car where it would be conveniemt to access. Would it be ok to use an...
09-10-12, 06:58 AM
Replies: 23
Views: 2,483
Posted By dubman

Well, that would now be my preferred solution...

Well, that would now be my preferred solution (sealing / taping all gaps in the polystyrene). Since, as it seems to me, the polystyrene is both a vapour barrier and an insulation. Thanks for all the...
09-10-12, 01:16 AM
Replies: 23
Views: 2,483
Posted By dubman

Ok, but I gather that, to avoid condensation, I...

Ok, but I gather that, to avoid condensation, I must install a separate vapour barrier *under the polystyrene, eventhough the polystyrene itself is a vapour barrier. Or would it be sufficient to seal...
09-09-12, 02:10 PM
Replies: 23
Views: 2,483
Posted By dubman

Unfortunately, I already have the extruded...

Unfortunately, I already have the extruded polystyrene boards installed on top of the joists (nothing between joists), and now I think the best option would be to install the vapour barrier under the...
09-09-12, 12:25 PM
Replies: 23
Views: 2,483
Posted By dubman

Ok, lets say I lift the polystyrene boards, then...

Ok, lets say I lift the polystyrene boards, then I have the joists, and below that the parquet (a small part of the ceiling has plaster instead...). So how exactly can I seal that area between joists...
09-09-12, 11:23 AM
Replies: 23
Views: 2,483
Posted By dubman

It's a little confusing about the vapour barrier....

It's a little confusing about the vapour barrier. I understand that in some cases of well ventilated attics, a vapour barrier isn't always necessary, as explained here: Insulation Basics Vapor...
09-09-12, 09:21 AM
Replies: 23
Views: 2,483
Posted By dubman

But then if *all the insulation was rockwool...

But then if *all the insulation was rockwool batts, would there not be the same issue with condensation? Also, I don't quite see how it would be a case of hot air meeting cold air and causing...
09-09-12, 08:17 AM
Replies: 23
Views: 2,483
Posted By dubman

But do you think there is any particular...

But do you think there is any particular (scientific) reason why drilling the 1-inch holes in the boards and filling with rockwool *wouldn't allow any moisture to escape into the well ventilated...
09-09-12, 05:14 AM
Replies: 23
Views: 2,483
Posted By dubman

I'm in Spain. The polystyrene boards are 8 cm...

I'm in Spain. The polystyrene boards are 8 cm thick. The ceiling underneath is mostly parqquet boards 9 cm wide x 14 mm thick, so not a sealed vapour barrier. There is nothing between the joists,...
09-09-12, 03:37 AM
Replies: 23
Views: 2,483
Posted By dubman

Oh, I forgot to say my idea is to drill the...

Oh, I forgot to say my idea is to drill the 1-inch holes and then fill them with loose rockwool, hopefully allowing the polystyrene sufficient ventilation so the rising moisture can escape.
09-09-12, 03:00 AM
Replies: 23
Views: 2,483
Posted By dubman

Polystyrene boards in attic and vapour issues

Hi, I have covered the attic floor with 8 cm polystyrene boards (on top of ceiling joists), but now I'm worried about condensation, so I was wondering whether it might be a good idea to drill...
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