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IWI Rendered

IWI Rendered

A highly effective solution that eliminates the moisture risk associated with IWI. NBT IWI systems use Pavadentro to provide active moisture control through absorption and redistribution of moisture within a woodfibre board and integral mineral layer. The system combines the best of modern technological advances with natural, traditional materials; finished with a two-coat lime plaster that perfectly compliments traditional and modern wall finishes. All components of the system are available below.

The System Sheet will show you all the components required and which bits go where.




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Thermally broken washer, nylon plug with nylon pin (hammer action) fixings to an..

Starting at: £10.78 Inc VAT: £10.78

Reveal Boards

See Diffutherm for specification   ..

Starting at: £27.74 Inc VAT: £27.74


Pavadentro is an innovative, ecological insulation with excellent capillary and ..

Starting at: £8.08 Inc VAT: £8.08


Hydraulic lime plaster for use as basecoat and finishing coat, for all internal ..

£14.28 Inc VAT: £17.14


Lime based internal base coat plaster on to Woodfibre boards. Also used as inter..

£15.40 Inc VAT: £18.48

RK30 – KalkinGlatt

Fine skimming plaster on various internal surfaces.   Grain Size mostly..

£21.76 Inc VAT: £26.11