Got a conversion to do? Building project? Got questions? Need Answers? Offering a product or service? Visit our forum...

My Barn Conversion


canadian pharmacy
About | Shop | Privacy | Forum | Gallery | Contact Us

Insulation ~ Phenolic foam

Category: insulation November 26th, 2009 by mbc

Phenolic foam insulation is made by combining phenol-formaldehyde resin (note the presence of formaldehyde, a hazardous chemical and known carcinogen), a foaming agent and a hardener. When all three are mixed an exothermic reaction causes foaming followed by rapid setting.


Usually now available as rigid boards or panels sometimes as a backing to plaster or chip board.


  • Relatively low embodied energy – in comparison to similar products.
  • Good fire performance. Very low flame spread, negligible smoke emission and very low levels of toxic gas emission.
  • Can be cut and shaped accurately. Often used to closely insulate pipes and can be reused.
  • Lightweight, strong and durable in higher density applications.
  • Can shrink. If applied as a foam then it can shrink when cured.
  • Moisture resistant.

From 0.018 W/m.K, but typically in the range 0.020 – 0.023 W/m.K (Watts per meter Kelvin ~ lower value is a better result)

Lies, damn lies & statistics…
Don’t agree? Know better? Got a real world example to share? Are you a manufacturer or supplier with something to say?
This isn’t a one way street, we really want to hear from you so please comment below or have your say on the forum
Great posts will be eligible from prizes from our forum competition!

Kingspan Kooltherm is available for around £8 square metre.

If you enjoyed that post, then read these…

Insulation ~ Glass Fibre
Similar to mineral wool insulation, glass fibre is one of the most common forms of insulation in the UK – everyone knows that rough, itchy, scratchy feel of glass fibre…

tag: ‘insulation

Insulation ~ Polyurethane
Often abbreviated to PU, Polyurethane is usually applied as a foam insulation sprayed onto the underside of roof rafters.

tag: ‘insulation

Insulation ~ Polyisocyanurate
Also know as PIR. Polyisocyanurate is essential a stronger more fire retardant development of Polyurethane. As may be expected it shares many of the characteristics of Polyurethane. Description Usually produced as…

tag: ‘insulation

Posted in insulation | No Comments » « Leave Yours

Leave a Comment

Please note: Comment moderation is enabled and may delay your comment. There is no need to resubmit your comment.