Insulating a wall from inside can be an option where altering the outside is difficult. The right approach depends on the building, available room space and the performance required.
Internal insulation may use an insulation layer with a compatible lining or finish. Thin cork treatments are a separate option for assessed surfaces and constrained details; they are not automatically equivalent to thicker board or other bulk insulation systems.
ECOPROCORK TLICS™ is the trowel-applied cork route. Confirm the exact grade, preparation, installed thickness and compatible finish. The DECO 00 FINO guide describes one component; it is not a complete wall design. Read the thin internal wall insulation guide for space-sensitive projects.
Establish whether the wall is solid, cavity or another construction. Check rain exposure, leaks, existing finishes and damp before installation. Internal insulation changes the temperature and drying behaviour of the existing wall, so the proposed build-up needs a suitable moisture assessment.
Include ventilation and heating in the plan. If mould or condensation is present, use the cold-wall assessment route. Do not cover an unresolved moisture problem or treat a finish as a guaranteed cure.
Review window and door reveals, floor and ceiling junctions, adjoining walls, services and any embedded timber. Interruptions in the insulation can create colder local areas. Agree how these junctions will be designed, installed and inspected.
Measure the room-space impact of all layers, not just the insulation. Include skirtings, sockets, radiators, fittings, protection and redecoration in the quote. Where applicable, confirm fire requirements and necessary approvals with the project team.
Request the exact product conductivity and installed thickness, then a calculation for the complete construction. Avoid comparing a thin coating with a thick board solely by their material conductivity. No general percentage saving or EPC improvement is promised.
Compare external wall insulation if the facade can be changed. For traditional masonry, read solid-wall insulation and moisture-compatible insulation guidance.
Send your postcode, approximate property age, wall construction if known, room dimensions, photographs and any history of damp. State whether the priority is comfort, reduced heat loss, limited space or a new finish. Ask for an assessment and written scope before ordering materials.
Find an Approved Applicator for a suitable cork project, or request technical support for a specification. Trade teams can also use the practical thin-wall guide.
General planning guidance reviewed 16 October 2026. See Energy Saving Trust: solid-wall insulation and Historic England: energy efficiency and retrofit. These independent sources explain general principles; they do not approve an ECOPROCORK system.