Insulation boards

[Ajax123]

Don't forget there are two types of insulation though. The NMP may offer a better acoustic insulation value than the Ekoboard if it is more dense. Can' find density figures for the NMP though.

 

[user123]

Is an Ecoboard the same as the Celotex board? Been looking to insulate my garage door...

 

[Ajax123]

Similar - The Ekoboard seems to be XPS (Extruded Polystyrene) Lambda value 0.027 whereas Celotex is PIR (polyisocyanurate) Lambda Value 0.023. Celotex will offer slightly better thermal insulation mm for mm but I think the Ekoboard would probably be slightly more robust to mechanical damage.

 

[DHTiling]

So 10mm is good.:lol:

 

[richarevans1]

throw this one at you with timber floors why not lay sisolation foil down on floor first then fix cementsheet over havent done it myself but have heard of others doing it might be worth a thought Insulation Foil

Won't you get condensation forming above the boards that way? I have a very cold suspended wooden floor I was looking at insulating, and the consensus on the various websites I looked at was that the insulation would have to go under the suspended floor to prevent condensation and rot. Which is why I haven't insulated it yet

 

[Gazzer]

Well this is my reply from NMP

"The 6mm No More Ply has a Thermal Conductivity value of 0.412 W/mk to ISO 8302:1991 (BS EN12664: 2001).

The Beavaboard however is 0.027 W/mk to BS874.

Unfortunately thermal values are a minefield because there are differing standards, as here, and different ways of measuring them. However, in real life comparisons with cable underfloor heating the following approximate results were observed:

1. Onto bare concrete slab – took about 3 hours to reach max temp of 24°C.
2. Onto No More Ply 6mm – took about 40 minutes to reach 24°C and 3 hours to reach max temp of 27°C.
3. Onto Beavaboard 6mm – took about 30 minutes to reach 24°C; temperature 29°C at 3 hours and still increasing.

If you are going to use No More Ply under wire underfloor heating, you must remember to prime the surface with Mega® SBR as this helps to reflect the heat back up.

In summary No More Ply reduces warm-up time, increases efficiency and allows a greater maximum temperature. Beavaboard is cement-coated foam board of the same type as recommended by underfloor heating companies, and has the same effect but to a greater extent."

 

[DHTiling]

So.. How does SBR reflect heat,,

 

[Gazzer]

So.. How does SBR reflect heat,,

 

[Gazzer]

Ahhh but its "Mega SBR" ...that explains it :smilewinkgrin:

 

[jay]

Won't you get condensation forming above the boards that way? I have a very cold suspended wooden floor I was looking at insulating, and the consensus on the various websites I looked at was that the insulation would have to go under the suspended floor to prevent condensation and rot. Which is why I haven't insulated it yet

prob right spose you will get the same with insulation board

 

[richarevans1]

"prob right spose you will get the same with insulation board"

Yeah, looks like the best option is to lift the boards and insulate underneath between but not below the beams, holding up the insulation with battens nailed to the beams. A real pain but better than having to replace a rotten floor.

 

[AshleyWilis]

if you dint have this insulation board then what are the other ways for under floor heating?
I really want to know because, we can warm the room with Ac but it dosn't effect the flooring, especially those chilled tiles.

 

[Gazzer]

if you dint have this insulation board then what are the other ways for under floor heating?
I really want to know because, we can warm the room with Ac but it dosn't effect the flooring, especially those chilled tiles.

Sorry can you rephrase this, not sure what you are saying ?

 

[Dan]

Just bumping some threads in the underfloor heating forum. You can now find and search for both electric underfloor heating and water underfloor heating threads. By the way, if you feel some of the threads you want to be seen at the top of the forum need to be bumped back, for the next month or so from now, feel free to do that. Although it's not usually something we allow, whilst we're going through this process of changing over forum software, we see the need for this to happen.