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Most of the work on this one is the part nobody sees. Finsa SuperPan airtight boards went onto the ceiling rafters and were taped with Pro Clima tape, junctions at the floor joists were sealed, a liquid airtight membrane was brushed where tape could not reach, and grommets went round every drainage penetration.
Sockets sit on Phonotherm structural insulation board so they can be fixed securely without punching through the insulation line. Then the walls: battens first, then Diathonite Evolution lime-cork-clay plaster sprayed in layers to reach the thickness needed, levelled off by hand. There is also an unused window blocked up in matching brick and a new suspended floor structure, both done while the house was open.
Preparation works for internal wall insulation in Muswell Hill, London
Blocking an unused window with matching bricks
New structural timber beams being installed
New suspended floor structure being installed
New suspended floor structure being installed
Phonotherm Structural insulation board installed behind, sockets
Phonotherm Structural insulation board installed behind sockets in Muswell Hill, London
Socket boxes installed onto Phonotherm structural insulation boards
Finsa SuperPan Airtight vapour barrier racking boards installed onto ceiling rafters
Finsa SuperPan Airtight vapour barrier boards taped around with ProClima airtightness tape
Finsa Airtight vapour barrier racking boards taped with ProClima airtightness tape in Muswell Hill, LOndon
Airtightness taping around floor joists at wall-floor junctions
Airtightness taping around floor joists - making junctions airtight in Muswell Hill, London
Airtightness work around floor joists using Aerosana Visconn fibre airtight liquid membrane in Muswell Hill, London
Airtightness works using Pro Clima Roflex Solido Airtight Grommet around drainage outlet in Muswell Hill, London
Battens are being installed in preparation for internal wall insulation
Battens are being installed in preparation for internal wall insulation
Battens are being installed in preparation for internal wall insulation
Battens ready for internal wall insulation
Diathonite Evolution lime-cork-clay insulating plaster-render spray machine
Diathonite Evolution lime-cork-clay insulation plaster being applied with spray pump onto solid masonry walls as internal wall insulation
Spraying Diathonite Evolution lime-cork-clay insulation plaster onto solid walls
Spraying Diathonite Evolution lime-cork-clay insulation plaster onto masonry walls
Diathonite Evolution lime cork insulation plaster sprayed in layers to reach required thickness in Muswell Hill, London
Diathonite Evolution lime cork insulation plaster being levelled off
Diathonite Evolution lime-cork-clay insulation plaster being levelled off
Diathonite Evolution lime-cork-clay insulation plaster being levelled off
Completed internal wall insulation with Diathonite Evolution lime-cork-clay system
Completed internal wall insulation with Diathonite Evolution lime-cork-clay system
If you want a genuinely warm old house rather than a slightly less cold one, the airtightness is not the optional extra. It is most of the result.
