Specialist exterior insulation systems for solid wall properties

Insulated Render – What Is It?

ewi system f permarockInsulated render systems come in many forms but all involve 3 basic elements.

Firstly, your external walls  are wrapped in thermal cladding boards in the same way a tea cosy keeps a tea pot warmer for longer.

Secondly, a specialist  render is trowelled onto the boards to weatherproof  and protect from water and frost attack.

Finally, a weather resistant and through coloured finishing render is applied for decoration and long term weather resistance .

 Freephone 0500 300 407 or click INSULATED RENDER ADVICE & QUOTES to send an email

EXPANDED POLYSTYRENE  ( EPS )  INSULATION

eps boardThere are three main boards of which Expanded Polystyrene ( EPS ) insulation slabs are the most common. These are very lightweight, easy to chamfer and highly cost efficient as they are the cheapest of the insulated render boards. They are generally suitable for most types of insulated render finishes but are not suitable for a natural lime render or a  brick slip finish. The thermal value they provide is similar to mineral wool but around 40% less than a phenolic insulated render system.

ROCKWOOL MINERAL FIBRE  INSULATION

mineral wool insulation slabsThe second type of board and around £6 per m2 more than the above EPS insulated render board is a Rockwool mineral board which is generally green in colour and reminds people of loft insulation which is also mineral wool. These  insulated render boards  are of far higher density and rigidity than loft insulation to withstand the UK climate.
These outside insulation boards are the most breathable of all the boards and have a similar thermal U value rating as the polystyrene boards with an A1 fire rating. Being a mineral wool though you have to use a mineral bonding insulated render and not an acrylic bonding render as this will restrict the ability of the mineral wool to breathe.

KINGSPAN PHENOLIC FOAM BOARDS

kingspan boardsThe third insulated render board is a Kingspan phenolic board. A high density board similar to celotex boards,but with special treatment to withstand the elements.
These boards have the highest thermal insulation and fire rating. They offer a 40% thermal gain over Mineral and EPS insulated render boards and are suited to all types of insulated render and brick/stone slips.
As you have probably guessed they are the most expensive solid wall insulation board and are around £12 per m2 more than the EPS boards.

Freephone 0500 300 407 or click INSULATED RENDER QUOTES & ADVICE to send an email

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