Celotex cw4100

[Pilot2002]

Hi. I have the chance to get a quantiy of celotex cw4100 100mm 1200x450 insulation panels. My architect has specified a 100mm fully filled cavity in the walls but just wanted to check to see if this insulation will be suitable? When I look online it says that these are for partial fill cavity walls. Do you think it will be ok to use them as full fill? I.e. to completely fill the 100mm cavity. Many thanks

 

[freddiemercurystwin]

No, absolutely not suitable for full fill.

 

[noseall]

No.
Use it for the floors.

 

[Pilot2002]

Ok thanks guys. Could I also use it in the ceilings? I've read the fact sheet again and it says specifically for use in masonry cavity walls

 

[freddiemercurystwin]

Had a lie-In this morning nose?

Probably ok in the ceiling, depends on the construction, which is .....

 

[Pilot2002]

Vaulted ceilings plasterboarded, rafters 47x125 and 47x147 in places. Also first floor joists also 47x125. What do you reckon? Cheers

 

[noseall]

Had a lie-In this morning nose?

 

[freddiemercurystwin]

It's all the same kind of stuff really, celotex may tell you otherwise.

 

[tony1851]

first floor joists also 47x125.

What span is the floor?

 

[Pilot2002]

The 47x125 is just a smalll area of about 3m x 3m and the 47x147 is only 2m x 3m approx so there small areas. How come?

 

[Pilot2002]

If I can't use this celotex product for a full fill cavity does that mean I have to use the Rockwool type? Cheers.

 

[tony1851]

The 47x125 is just a smalll area of about 3m x 3m and the 47x147 is only 2m x 3m approx so there small areas. How come?

If the floor is a clear span 3mx3m, 125x47 would be insufficient.
(or is it a 2m span? - in which case they would be OK)..

 

[freddiemercurystwin]

Either Crown Dritherm or Rockwool Cavity. Your architect is shoite for not sticking a manufacturer on the dwg.

 

[noseall]

Hang on, is the o.p. building sips type panels?