Anhydrite / calcium-sulphate
Gyvlon Anhydrite Screed in Devon & the South West
Gyvlon is the market-leading anhydrite screed in the UK. We install it across the South West on the right jobs.
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Wanting Gyvlon quoted?
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Written quote
Gyvlon is Tarmac's anhydrite (calcium-sulphate) flowing screed. It's fast to pour, self-levelling, and excellent with underfloor heating in dry residential builds.
We install it where it makes sense — and steer clients to Cemfloor where wet-area risk means anhydrite isn't the right chemistry.
Gyvlon vs Cemfloor — a plain-English take
Gyvlon is good for
- Dry residential builds
- UFH under engineered wood
- Fastest possible pour
- Lowest cost per m²
Cemfloor is better for
- Any wet-room in the pour zone
- Tile finishes without sanding
- Basements and commercial kitchens
- Renovation over damp slabs
Anhydrite screed
- Liquid screed for dry residential build-ups
- Suitable for underfloor heating
- Laitance sanding included in the laying process
Want a professional to handle it?
Related services
Covering Devon, Somerset and West Dorset
Frequently asked
Wanting Gyvlon quoted?
Send the drawings. We'll price Gyvlon and Cemfloor side by side so you can decide.