Roofing Technical Bulletin No. 3001 Update

We are pleased to announce the availability of an updated Foam-Control Roofing Technical Bulletin No. 3001.

The National Roof Contractors Association (NRCA) has published a new recommendation for the R-value of polyisocyanurate (polyiso) insulation with the publication of updates to the 2015 The NRCA Roofing Manual: Membrane Roof Systems.

The new NRCA recommendation for polyiso R-value is based upon testing by NRCA on current generation polyiso roof insulations.

The new NRCA polyiso R-value recommendation is:

Polyiso R-value = 5.0 per inch thickness in all climate conditions.

By | 2018-04-16T14:47:52+00:00 January 21st, 2016|General|

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