FMB sustainable insulation push: moisture‑safe retrofit notes for project teams
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
Builders merchants MKM Airdrie will begin stocking Sisalwool natural fibre insulation batts, loft rolls and breathable low‑carbon products, following a link-up arranged by the Federation of Master Builders Scotland. The range, already used on the Greyfriars Charteris Centre in Edinburgh, is aimed at heritage, retrofit and conservation projects where vapour-open, hygroscopic insulation is often required to manage moisture in solid-wall and traditional constructions. A launch “Builders’ Breakfast” with live installation demonstrations is scheduled for 27 August at the Airdrie branch.
Technical Brief
- Natural fibre batts can accommodate minor substrate irregularities, improving contact and reducing convective bypass in retrofits.
Our Take
FMB’s role in promoting Sisalwool at MKM Airdrie sits alongside its recent push for mandatory licensing and a Single Construction Regulator, signalling that the organisation is trying to link higher product standards (including sustainability) with tighter competence and compliance frameworks across the UK.
With planning applications for new homes in England hitting a post‑covid and decade high in 2025 in our coverage, FMB’s backing for sustainable insulation in Scotland suggests small and medium builders could see low‑carbon materials like Sisalwool become a differentiator in winning work on future housing schemes.
The Greyfriars Charteris Centre reference places this product in an urban retrofit/heritage context in Edinburgh, implying that breathable, natural insulation systems may be targeted first at refurbishment and community projects where moisture performance and occupant health are under greater scrutiny.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.


