Also it is normally necessary to wet the substrate to minimise suction prior to lime plastering. No, conventional plasterboard does not have a coarse enough surface to provide a good key for lime plaster. But, every site and every application will be different, expereince is crucial - it needs to be monitored daily as it is ready for its next coat when you can push a fingernail in but not a knuckle - call for advice if you are unsure!Ĭan I use lime plaster on ordinary gypsum plasterboard? Ideally 2 weeks should be left between scratch and float coats, and 1 week between float and finish. How many days should I leave between scratch, float and finish coats? Substrate preparation, mixing, all procedures - scratching, floating etc and tending must be done correctly and at the right times! Use fine sand and apply 2 tight coats of around 1.5mm.įor other applications and different substrates, please see the application guides in the Documentation section. Coat should be 6 – 9mm and floated off.ģrd coat: Finish Coat. Use well graded sands and plenty of hair. Coat should be 6 – 9mm and diamond scratched.Ģnd coat: Float Coat. It is extremely important that application guides for the different products should be followed but in general internal lime plaster should be applied as 3 coats:ġst coat: Scratch Coat. Although we recommend that putty limes are generally best for internal work. This advice applies to both hydraulic and putty limes. What is the best way to apply lime plaster? 25Kg Bag\20L Bucket covers 1m2 at 6-9mm thick.To see an example of this product in use, see our case studies for St Mary's Priory, Abergavenny, St Mary's Church, Chalgrove and Somerset Rural Life Museum, Glastonbury. This product qualifies for our bulk order discounts, the more you buy, the greater the discount! It is available in 1 tonne bulk bags, 25kg bags or 20 litre buckets. Availability : This product is available with or without hair.Used for : external plastering onto soft substrates such as strawbale, soft brick/stone, cob etc and almost always internally refer to "Choosing a Lime" in Documentation below.įor assistance with calculating the materials you require, please go to our quantity calculators where you will be asked a series of questions to help you to assess your needs or call one of our experienced sales team.Properties : the most flexible and vapour permeable/breathable of the lime product family, so highly suitable for softer sybstrates and for solid wall or breathing construction buildings.It is therefore important to use these plasters at an appropriate time of the year and to protect them from drying too rapidly.Īpplication guides are printed on the bags and available below, we also have an excellent telephone support service for customers as well as courses at Ty-Mawr or on your site, so don't be put off from using them - the results are well worth it! It requires exposure to Carbon Dioxide in the presence of moisture to harden. It is suitable for internal plastering but can also be used for external rendering on 'soft' substrates given appropriate application and protection. It is made from our high calcium/non-hydraulic lime blended with carefully selected, high quality aggregates which help to ensure good workability as well as minimal shrinkage. Ty-Mawr Premixed Lime Base Coat plaster is premixed and ready-to-use, it simply requires 'knocking-up' prior to use.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |