What U value does 100mm Celotex?

0.2 W/m2k
Using Celotex to fill the cavities is more expensive, but you will only need to use 100mm celotex to achieve a U-value of 0.2 W/m2k .

Is Celotex the same as Kingspan?

What’s The Difference Between Celotex and Kingspan? Celotex and Kingspan are the names of manufacturers that offer very similar insulation products. Kingspan is a bit younger, but still has name value after 50 years in the industry.

How many square meters is a sheet of Celotex?

Coverage: 2.88m2. Thickness: 100mm. rValue: 4.50m2K/W. Weight: 3.27kg/m2.

What thickness of Celotex do I need?

Take into consideration the thickness you want to insulate to and if there is any pre-existing insulation in place, we recommend using 300mm if using wool insulation and 150mm if using the rigid insulating boards like Celotex or Kingspan.

Is Celotex the best insulation?

90mm Celotex or equivalent will give the best insulation, it’s insulation factor is about twice that of Rockwool. But it needs cutting which takes time and is messy. Rockwool might be easier to install, although you have to keep it in place somehow and if installed vertically ain’t so simple.

What is the R value of 75mm Celotex?

• 75mm Kooltherm – R Value = 4.15 o So use 100mm Celotex PIR – R Value = 4.50 (Higher so better!)

Is Recticel better than celotex?

All of the Above hold the same thermal conductivity on 100mm Insulation Board of 0.022W/mK. Contrary to popular belief all of these brands work towards the industry standard of 0.022W/km. So, no matter the PIR insulation brand either Celotex, Recticel, or Kingspan they all do the same job.

Does celotex require an air gap?

Batten gap between bottom of celotex and plaster board. if the airflow is correct you won’t need foil back plasterboard. sometimes you can getaway with less celotex it depends on how strict the building control officer is. Of course this will have a negative effect on your heat loss and heating bills.

What size is Celotex?

Product Selector

Product Name Thickness Range Sizes
Celotex CW4000 40-100mm Width 450mm, Length 1200mm
Celotex GA4000 50-100mm Width 1200mm, Length 2400mm
Celotex PL4000 25-65mm (+12.5mm Plasterboard) Width 1200mm, Length 2400mm
Celotex TB4000 20-40mm Width 1200mm, Length 2400mm

Which is better Celotex or polystyrene?

polystyrene is cheaper than celotex. R value or 50mm polystyrene is 1.25. R value of 50mm Celotex is 2.25. It has to be noted that over 7-10 years Celotex will drop in R-value to match the polystyrene as polystyrene will not drop.

Is Rockwool or Celotex better?

What is better than celotex?

Kooltherm Phenolic boards are more expensive than PIR (Celotex /Recticel) type boards but can save you thickness. Higher costs per m2 for Kooltherm & other phenolic boards. Pros: Easier to fit than many other insulation types, as it is a blanket it can be stapled directly over joists or in between timbers.

How big is a 100mm Celotex insulation board?

100mm Celotex GA4100 Insulation Board 2.4m x 1.2m Thickness 100mm Length 2400mm Width 1200mm Coverage 2.88M2 Weight 9.41Kg

What do you need to know about Celotex?

Our Project Specification Team would be more than happy to discuss CPD requirements with you. Book now and don’t miss out! Energy Assessments …by Celotex is an all-under-one-roof energy efficiency and sustainability service specialising in SAP & SBEM calculations, pre-tender support, airtightness & water analysis plus much more.

What kind of insulation is Celotex cw4000 made of?

It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).

What is the thickness of a Celotex Pir board?

The Celotex GA4000 range is a range of general purpose PIR boards with thicknesses ranging from 50mm to 100mm. GA4000 is an incredibly versatile insulation board and can be used in a variety of applications.