Telling Lime Limited Booths Hall Booths Park Chelford Road Knutsford Cheshire WA16 8GS. Tel: 01565 756110 Email: info@tellinglime.co.uk Web: www.tellinglime.com

TELLING LIME
UNILIT NATURAL HYDRAULIC LIME PLASTERS AND RENDERS
CORIDECOR LIME PUTTY PLASTER AND RENDER POLISHED FINISHES

PLASTERED/ RENDERED/ ROUGHCAST COATINGS

 Telling Lime - Natural Hydraulic Lime
Telling Lime manufacture and are distributors for a range of natural lime mortar products for various applications, together with stabilisation and consolidation grouts, mesh reinforcement and lime paints and finishes. The natural hydraulic lime products replicate the strength, porosity, adhesion, vapour permeability and flexibility of historic mortars.

Unilit mortars conform to European Standard ENV 459-1 for natural hydraulic lime mortars. The products are manufactured using a modern day manufacturing process, are guaranteed against failure for 10 years and are warranted against defect under a professional indemnity insurance. Telling also manufacture a range of bonding agents for use with Unilit mortars. 

Unilit FEN-XA Natural Hydraulic Lime. - Site prepared Natural Hydraulic Lime : sand mixes 

Unilit FEN-XA  Natural Hydraulic Lime. - Natural Hydraulic Lime binder
Unilit FEN-XA is a pure natural hydraulic lime binder designed to be gauged with the correct volume and quality of sand and water to produce a mortar for a variety of applications, including traditional and modern masonry work, re-pointing, backing layers in plasterwork and renders, finishing applications for both renders and lime washes as well as in floor screeds and lime concretes.
Unilit FEN-XA conforms to European Standard ENV 459-1 for natural hydraulic lime. It is not permitted to add clinker, cement or any other synthetic binder.
The binder is mixed on site with the selected additives, such as sand and natural pigments, to create a mortar to suit the specific application. The use of sand with an optimum grain size is important (ideally according to the Füller-curves, with a maximum grain size of 4 mm) but the Unilit FEN-XA binder allows the use of sand which does not exactly meet these theoretical requirements.

Packaging:                                                        25 kg bags, in powder form.
Density:                                                            1000 kg/m3.
Tensile strength:                                                2.7 N/mm2 after 28 days; 
                                                                        3.0 N/mm2 after 60 days.
Compressive strength:
– Binder: 4.5 N/mm2 after 28 days;                   6.0 N/mm2 after 60 days.
– Mortar: 2-9 N/mm2 after 28 days;                  3 - 10 N/mm2 after 60 days.*
Modulus of elasticity:                                         6130 N/mm2.*
Volumetric stability:                                           Stable.
Vapour diffusion resistance:                               µ= 13.7.
Fire classification:                                              Non-flammable (M.O.)
Recommended maximum aggregate sizing:         4 mm.
* Variable mix strengths can be obtained by altering the mortar mix and aggregate size to suit the application.
Contact Telling technical department for advice on the use of hydraulic lime admixtures.
Consult with Unilit technical literature for details. Natural hydraulic lime mortars are specialist products and it is recommended that Telling Lime are consulted early in the design process.
A premixed finishing coat of Unilit 40 can be applied to weatherproof the render or Unilit 45 internally. A colour finish can be applied with a lime paint - Corical - Lime wash and lime paint finishes are available from Telling Lime. Alternatively a through coloured finish - Unilit 65F/65M/65N or a Telling Cori polished finish can be applied.


Waterproofing and Stabilising layer - Unilit 30 waterproofing and stabilising layer.
Apply Unilit 30 as the undercoat mortar for plastering and rendering of internal and external walls below ground level, up to approx. 1 meter above ground level and other areas where damp and/or salts are present or expected. Unilit 30 is impermeable to water but very vapour permeable and can be used as an undercoat or as a coarse finishing coat as part of a Unilit mortar system. The mortar can be applied to damp walls of buildings and cellars. 
Where high levels of damp and salts are prevalent, e.g. basement walls the minimum total layer thickness of Unilit 30 must be 20mm, for the minimum waterproofing performance the minimum total layer thickness must be 12 to 15mm.
Unilit 30 and Unilit Fen XA mortar are normally applied in adjacent areas to the same thickness with a finishing coat applied over both to give a uniform finish. Unilit 30 can also be applied as a pre treatment prior to applying Unilit Fen XA mortar, or as the first 15 - 20mm render thickness in place of Unilit Fen XA where greater thickness is required. 
If a finish or following layers are applied to Unilit 30 after 1 week (or where Unilit 30 has fully dried), a bonding layer of Unilit 15/P1 or 15/ P2 is required.
A colour finish can be applied with a lime paint - Corical - Lime wash and lime paint finishes are available from Telling Lime. Alternatively a through coloured finish - Unilit 65F/65M/65N or a Telling Cori polished finish can be applied.

Preparation: The substrate must be clean and free of all traces of oil and grease. When the substrate has been treated with an impregnating product (silicones or similar) it is recommended to consult the supplier or manufacturer.
Bonding agent: Unilit 10 / Unilit 15/P2.
Waterproofing and stabilising layer (if required): Unilit 30. (for basements and other places susceptible to rising damp, or high levels of damp or salts). see Unilit 30 clause.
Application: Mix Unilit 30 with clean water - 4.5 to 5.25 litres of water to 30 kg of powder depending on the temperature and substrate. Mix manually or mechanically for 3 to 4 minutes.
Apply directly to either a dry or damp substrate. If the substrate is too dry, dampen down the surface prior to overcoating. Do not apply in temperatures below 5°C or above 40°C. The mortar remains workable for 2 hours and dries in 24-48 hours. Protect from frost for 48 to 72 hours.
Maximum thickness per layer: 15-20 mm.
Minimum total thickness of layers: 12 - 15mm for minimum waterproof performance, 20 mm for maximum waterproof performance e.g. for excessively damp and salt laden areas, basement walls and areas below ground level.
Undercoats:
Lime manufacturer/ Type: Unilit Fen-XA natural hydraulic lime binder.
Manufacturer: Telling Lime Limited, Booths Hall, Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8GS. Tel: 01565 756110 Email: info@tellinglime.co.uk  Web: www.tellinglime.com
Product reference: Unilit FEN-XA Natural Hydraulic Lime Binder.
Application: Do not apply in temperatures below 5°C. Protection must be provided in conditions of excess heat or drying winds. The mortar remains workable for 2 hours and dries in 24-48 hours. Protect from frost for 48 to 72 hours.
Sand:  Seek advice from Telling. Of Approved Grade: well graded washed sharp angular sand with a maximum particle size of 4mm, and a low content of clay or fines. Sand must be approved prior to application.
Mix (lime:sand): Seek advice from Telling. Mix Unilit FEN-XA with a well-graded, pure and clean aggregate - 380-450 kg of binder per m3 of sand. (Generally 1:3 Unilit Fen XA: Sand of approved grade.)
Fibre reinforcement: Seek advice from Telling. Not required.
Thickness (excluding dubbing out): Seek advice from Telling. 
15mm maximum thickness per coat.
Masonry backgrounds require 2 x 10mm layers generally, or 1 x 15mm where thickness is limited.
Telling Brick Mesh or timber lath require 1 x 8 - 10mm and 1 x 10 - 15mm layers. 
Final coat: Premixed natural hydraulic lime finishing mortar.
Product reference: Unilit 40. / Unilit 45. / Unilit 65
Thickness: 3-4 mm (fine finish) 3 - 5mm (medium finish) 4 - 6mm (coarse finish) overall.
Finish: Seek advice from Telling. depending on product and desired finish- trowelled, wood floated, sponged.
Accessories: Telling Brick Mesh Stainless steel mesh reinforcement.