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A damp, cold cellar, and a brief to turn it into a room somebody would actually want to sit in. We dug the floor out, laid a sub floor with reinforcing mesh, and tanked the walls all round.
Diathonite lime-cork insulating plaster went over the tanking, including the feature wall, finished with a lime smoothing coat. The floor was tanked, insulated and screeded with electric underfloor heating before tiling. We altered and insulated the old coal chute, and put a walk-on window in above it to bring daylight down.
I was very suspicious of companies that sell basement tanking as if it was a magic solution and that's why I seeked Eco Renovation when converting our Victorian cellar to an office room. Adam is very knowledgeable of old buildings and is absolutely passionate about sustainable construction practices. When tackling an issue like a very humid basement, he really consider things holistically and will take into account the outside drainage situation, ventilation, air brick capacity, flooring types, insulation, heating capability, even advising us on breathable paint type and risks of blocking the air circulation with joinery. We were accompanied from the beginning of the journey when assessing what's possible to the last final detail of getting the room built and ready to be lived in. I couldn't recommend enough him and his team as the final result is better than anything we were expecting when embarking on this project.

Digging up basement floor for insulation

Humidity in basement before insulation

Basement sub floor installation with reinforcing mesh in place

Basement sub floor installation

Diasen Watstop waterproof tanking applied to basement walls

Diasen Watstop waterproof tanking applied to basement walls

Diasen Watstop waterproof tanking applied to basement walls

Phonotherm Structural insulation board behind electrical sockets for secure fixing and to minimise thermal bridging

Old coal chute alteration and insulation

Diasen Diathonite Evolution insulating breathable lime plaster being applied to walls

Diasen Diathonite Evolution lime plaster applied to feature wall

Diathonite Evolution lime-cork-clay insulating plaster applied to basement walls all around

Internal wall insulation with plaster application

We have a guest - checking works

Reinforcing steel being laid for screed

Installation of screed floor

Insulation of perimeters

Basement floor tanking

Insulated basement floor slab

Application of Argatherm lime smoothing coat

Application of lime smoothing coat

Application of Argatherm lime smoothing coat to walls

Installation of electric underfloor heating in basement

Finished, tiled basement floor

Finished, tiled basement floor

Walk on window installed above old coal chute

Walk on window installed above old coal chute

Walk on window installed above old coal chute

Basement fully tanked, insulated, decorated