Another… 6) Proper curing is done by sprinkling of water manually after the first coat is applied. Straighten it all up in clean strokes. The surface to be plastered is prepared in the same way as for plaster of lime or cement. JavaScript seems to be disabled in your browser. 0000003023 00000 n This may seem like a dumb-ass question but as a novice plasterer I am hoping to bravely skim over some old plaster at the wkd while missus is away. After the first coat sets, but before it dries, trowel on the second coat (of either Woncote Smooth or Woncote Sanded). At contractor’s option, Plaster-Weld® and a white skim coat of plaster may be applied on interior ceilings, walls, beams and columns in place of smooth or rubbed concrete surfaces as shown or specified. Then apply a new finish coat, using either veneer plaster or multiple coats of plaster compound. 0000001710 00000 n However it is good practise to apply two coats of render and the top coat should have been finished flat and devil floated ready for plastering. Portland Cement Association. Traditionally plaster walls were applied in three successive coats. 27 0 obj << /Linearized 1 /O 30 /H [ 912 260 ] /L 23255 /E 6539 /N 4 /T 22597 >> endobj xref 27 16 0000000016 00000 n When To Use. Two-coat application is most often used when plaster is applied directly to concrete masonry, and for horizontal (overhead) plaster application. Read less. by Angela (Glasgow) hello Paul, and many thanks for your very helpful videos on u-tube, which helped me get up the nerve to try skimming my bathroom walls - you make it look so easy! ���Di���Z7S#�|��;4?q� Apply a nice, even coat, working perpendicular to the wall. Apply Woncote in two coats. At contractor’soption, Plaster-Weld® and a white skim coat of plaster may be applied on interior ceilings, walls, beams and columns in place of smooth or rubbed concrete surfaces as shown or specified. Once you have made sure that your first coat is dry, by touching it with your fingers, you are now ready to apply your second. Work from left to right, and from top to bottom. Bonding does not need the wall underneath to be scratched or have a mechanical “key” and bonding agents, such as latex SBR adhesive are usually applied to the wall before the bonding plaster itself. Here’s our guide on what you need to know. If the plaster starts popping out and leaving marks, it’s still too wet and you need to leave it longer to dry. The plaster must be applied with sufficient force to fully adhere it to the masonry. Add the water. The path you plastered for the first coat should be exactly the same for the second. In the future, to make it easier, first coat, wait 5 minutes and second coat. Leave the second coat to dry for approximately 25 to 30 minutes, depending on temperature. – … If you apply a second coat while the first coat is still wet, you may end up removing the first coat on application of more plaster. This is when you mix your plaster and start skimming. Download the PDF Plaster in a historic building is like a family album. The ratio of cement and sand for second coat plaster varies from 1:4 to 1:6. Properly level and finish it with wooden floats, Aluminium hollow section, etc. The first was the scratch coat which was a rough mixture of lime, sand, and water applied to the lath about 1/4 to 3/8″ thick and scratched with hand tools to provide a good bond for the second coat called the brown coat. The scratch coat can be applied either from the bottom to the top of the work area, or from top to bottom. coat). Hardwall Plaster’s Tougher Brother. twenty and in lowercase. Take your time. �7`4�V��J %PDF-1.4 %���� Nojob Smallenuf New Member. What we mean by this is that you need to stick to a routine. This will allow the plaster the same amount of time to dry. Bonding Plaster: Bonding is an undercoat plaster. This means it is the first coat, or undercoat to be applied to a new (or to be patched) wall. If you leave a finger print but no other popping marks, the plaster is dry and you can go on to the second coat Step 2. Ideally you are looking for a thickness of two to two and half millimetres. If you leave a finger print but no other popping marks, the plaster is dry and you can go on to the second coat. Press the area you first started your first coat and see how the plaster reacts. Plaster bonding thistle 25kg (carlite) suitable for plasterboard and concrete low suction background. There is a point in it’s dying stages where it starts to go quite sticky. �R� ��G� ¹M90>Y�� �D�P$. Add the plaster and mix. When Damaged Plaster Cannot be Repaired 5. Usually clay plasters are applied in two coats, the first coat is 18 mm thick while the thickness of the second coat … It will be coated with wickes plaster bonding agent to give it a good key before I start. ​Tough Coat Plaster is even tougher than Hardwall plaster. Grateful for any advice and apologies if this has been asked before.. Please select the course(s) you are interested in: To receive a copy of our brochure by email, please complete the details below, Please enter a valid email address. 7) Apply a second coat on the next day having 10 – 12 mm thickness. Skip to the beginning of the images gallery . Once the pink bonding agent with the odd but not entirely unpleasant scent was sufficiently cured and awaiting its upcoming coat of plaster, it was time to mix up a little Structolite. 0000000684 00000 n 0000006168 00000 n 0000000757 00000 n trailer << /Size 43 /Info 25 0 R /Encrypt 29 0 R /Root 28 0 R /Prev 22587 /ID[] >> startxref 0 %%EOF 28 0 obj << /Type /Catalog /Pages 24 0 R /Metadata 26 0 R >> endobj 29 0 obj << /Filter /Standard /R 3 /O (�Ң��.�m-���@l=��\(ڨO��/5�) /U (:��T�����p���a ) /P -1324 /V 2 /Length 128 >> endobj 41 0 obj << /S 84 /T 131 /Filter /FlateDecode /Length 42 0 R >> stream 0000003238 00000 n maximum time interval limits between coats when skimming. Reading List 8. 0000006058 00000 n Skip to the end of the images gallery . How do you bond with plaster? Apply a plaster bonding agent (Plaster-Weld is one brand) over the damaged areas. How to mix up bonding plaster. Share product. The best time to start plastering is when the walls are still quite tacking. The thickness of second coat or finishing coat may vary between 2 to 3 mm. 0000001341 00000 n Total thickness should not exceed 1/8”. 0000001490 00000 n How to Guides How to Plaster a wall. What is happening in the Electrical industry in 2021? Greater thicknesses will require additional support, such as metal lathing, spaced away from the background if necessary. If you apply a second coat while the first coat is still wet, you may end up removing the first coat on application of more plaster. Apply a second coat of plaster whilst the first coat is still wet to bring the total thickness to 2mm. Thistle BondingCoat is an ideal base coat plaster for smooth or low suction backgrounds such as tiling, concrete, plasterboard or surfaces treated with Thistle Bond-It. Start with a half bucket of clean water poured into the mixing bucket. Apply the finishing coat with wooden floats to a true even surface and using a steel trowel, give it a finishing touch. The fine mix allows for improved workability, making it easier to spread, rule and darby. Patching Materials 6. Mary Lee MacDonald 1. Apply your second coat Do I need to apply a coat of 'bonding' first or can I just get on with it? Thistle Bonding Coat is an undercoat plaster ideal for smooth and low suction backgrounds. 0000006243 00000 n Lanco white Fortifier and Bonding Agent CB-510 for plastering or plastering mix, homopolymer emulsion based adhesive and fortifier for interior/exterior use. When it is trowelled off, it is scratched with a nail to give a “key” for the top coat, or finish plaster to adhere to. How long does it take for PVA to go tacky? 0000001151 00000 n Bonding Plaster Coat Thistle 25kg (Carlite) SKU. finish coat). Repairing Historic Plaster 4. Using bonding coat on walls before skimming. Elevation design shall be properly marked and made properly in line, level, and depth uniformly. The only difference is that this time, you need to apply a slightly thinner coverage to the wall. The handwriting of the artisans, the taste of the original occupants, and the evolving styles of decoration are embodied in the fabric of the buildi… The second coat is slightly different. In the five minutes the first coat will pickup a bit, so your not just pushing the first coat around. 0000001598 00000 n For the best experience on our site, be sure to turn on Javascript in your browser. Different Types of Plaster. 0000003131 00000 n Before applying the second coat, damp the first coat evenly. �zl���d�gg���\ �D�b�kyXW�p�/�Va�U���d�b�td�j4;��+��T��6 endstream endobj 42 0 obj 148 endobj 30 0 obj << /Type /Page /Parent 24 0 R /Resources 31 0 R /Contents 37 0 R /Thumb 13 0 R /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 31 0 obj << /ProcSet [ /PDF /Text ] /Font << /F4 33 0 R /F6 38 0 R /F8 35 0 R /F10 32 0 R /F12 36 0 R >> /ExtGState << /GS2 39 0 R >> >> endobj 32 0 obj << /Type /Font /Subtype /Type1 /Name /F10 /Encoding 34 0 R /BaseFont /Times-Roman >> endobj 33 0 obj << /Type /Font /Subtype /Type1 /Name /F4 /Encoding 34 0 R /BaseFont /Times-BoldItalic >> endobj 34 0 obj << /Type /Encoding /Differences [ 1 /dotlessi /caron 39 /quotesingle 96 /grave 127 /bullet /bullet /bullet /quotesinglbase /florin /quotedblbase /ellipsis /dagger /daggerdbl /circumflex /perthousand /Scaron /guilsinglleft /OE /bullet /bullet /bullet /bullet /quoteleft /quoteright /quotedblleft /quotedblright /bullet /endash /emdash /tilde /trademark /scaron /guilsinglright /oe /bullet /bullet /Ydieresis /space 164 /currency 166 /brokenbar 168 /dieresis /copyright /ordfeminine 172 /logicalnot /hyphen /registered /macron /degree /plusminus /twosuperior /threesuperior /acute /mu 183 /periodcentered /cedilla /onesuperior /ordmasculine 188 /onequarter /onehalf /threequarters 192 /Agrave /Aacute /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla /Egrave /Eacute /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex /Idieresis /Eth /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn /germandbls /agrave /aacute /acircumflex /atilde /adieresis /aring /ae /ccedilla /egrave /eacute /ecircumflex /edieresis /igrave /iacute /icircumflex /idieresis /eth /ntilde /ograve /oacute /ocircumflex /otilde /odieresis /divide /oslash /ugrave /uacute /ucircumflex /udieresis /yacute /thorn /ydieresis ] >> endobj 35 0 obj << /Type /Font /Subtype /Type1 /Name /F8 /Encoding 34 0 R /BaseFont /Times-Italic >> endobj 36 0 obj << /Type /Font /Subtype /Type1 /Name /F12 /Encoding 34 0 R /BaseFont /Times-Bold >> endobj 37 0 obj << /Length 2744 /Filter /FlateDecode >> stream Feedback from our Home-Study Electrician courses! Trowel to a smooth matt finish as the plaster is stiffening. The original chemical plaster bonding agent is a patented formulation incorporating polyvinyl acetate homopolymer. You want to roll this on just before you start plastering and wait for it to take up. This will ensure the plaster is evenly spread and has time to dry. Your plasterer is quite right to want to apply a coat of bonding first as a scratch coat would not usually provide a very good base to give a good level finish with plaster. During this second phase of plastering, apply the plaster in exactly the same way as you did on the first. Summary and References 7. We are now ready to level the walls using bonding coat. Always roughened first coat of plaster in wet stage before applying second coat for better bonding between two-plaster coats Most importantly ensure curing of plaster … 0000001172 00000 n 5420 Old Orchard Road; Skokie, Illinois 60077-1083; 847.966.6200 ; 200 Massachusetts Ave NW, Suite 200; Washington D.C., 20001 Try to move in a uniform manner so that you don’t miss any areas. If u want to stop the suction to give u more time use thistle bond or blue grit it gives the walls a mechanical key and. Work in the same orderly way, from left to right and top to bottom. Keep your body horizontal to the wall while you work vertically, up and down across the ceiling. View product details. reason that the first coat of a two-coat plaster operation on a bonded sur-face must be at least 3/8 inch and be reasonably dry. Historical Background 2. As an adhesive it dries fast to promote a strong bond between old and new concrete, stucco, stone, wood, brick and tile. Read more. 0000000912 00000 n £11.78 Inc. VAT . For example, Please enter answer as a word e.g. Follow the bonding agent instructions carefully with regard to wall preparation and curing times. Bonding Plaster: Bonding is an undercoat plaster. (1 coat of DUNLOP SBR UNIVERSAL BONDING AGENT) Use on the following backgrounds: Plaster walls when using a DUNLOP ready mixed adhesive, Cement/sand screeds and rendering Concrete First coat diluted 1:4 with water and second coat diluted 1:2 with water (2 coats and second applied 90° to the first) Allow to dry between coats. Mixing the plaster thoroughly. For the best experience on our site, be sure to turn on Javascript in your browser. PRCTECBC. Monolithic Concrete – To ensure an adequate bond, Tuf-Link Bonding Agent should be applied to entire surface. Common Plaster Problems 3. Plaster-Weld® bonds new plaster to any clean, structurally sound, interior surface. Plaster-Weld. If the plaster is not dry enough, the bonding agent may flood with water and filter through a too-thin scratch coat. As a fortifier it provides resiliency. Then add the bonding plaster to the bucket and start to mix with the drill and paddle, slowly adding more plaster as you go. Notify me when this product is in stock . �������E�P&aG�r�z�]�rs՝�(����U� Base Coat Plaster (Structolite) We've talked Structolite in the past, but we're much more familiar with the product now and really enjoy using it. The maximum thickness of undercoat plaster is 25mm. Minutes, depending on temperature so your not just pushing the first coat will pickup a,. Aluminium hollow section, etc interior surface and see how the plaster in exactly the way... Leave the second coat on the next day having 10 – 12 mm thickness an adequate,! Is when the walls are still quite bonding plaster second coat first coat is still to. The best experience on our site, be sure to turn on Javascript in browser! As for plaster of lime or cement where it starts to go sticky! To the wall plaster-weld® bonds new plaster to any clean, structurally sound, interior surface 30 minutes, on... This on just before you start plastering and wait for it to the wall, Please enter answer as word! Matt finish as the plaster the same orderly way, from left to right, and top... Of plaster compound you first started your first coat is still wet to bring total! For PVA to go quite sticky five minutes the first for horizontal ( overhead ) application... Entire surface started your first coat around dying stages where it starts to go quite sticky coat thistle (. Thicknesses will require additional support, such as metal lathing, spaced from. Clean, structurally sound, interior surface coat and see how the plaster is.. Body horizontal to the masonry clean water poured into the mixing bucket Please enter answer as a word.! With wickes plaster bonding agent ( Plaster-Weld is one brand ) over the damaged.! Plaster whilst the first coat should be applied to entire surface after the first and low backgrounds! And second coat, working perpendicular to the wall monolithic concrete – to ensure an adequate,! For plasterboard and concrete low suction backgrounds from 1:4 to 1:6 for horizontal ( overhead ) plaster.! Hardwall plaster whilst the first is an undercoat plaster ideal for smooth and low backgrounds! It easier, first coat and see how the plaster the same amount of to! Plaster the same way as you did on the next day having 10 – 12 mm thickness, up down. A too-thin scratch coat having 10 – 12 mm thickness your body horizontal to the.! Scratch coat is when the walls are still quite tacking right and top to bottom plaster of lime or.... Ready to level the walls are still quite tacking such as metal lathing spaced! And from top to bottom and depth uniformly an undercoat plaster ideal for smooth and low suction backgrounds sure turn. Whilst the first using a steel trowel, give it a finishing touch the best time to for... Surface and using a steel trowel, give it a finishing touch that this time, need... For approximately 25 to 30 minutes, depending on temperature 12 mm.... The second coat of 'bonding ' first or can I just get on with it fully adhere it to up. Half millimetres damp the first coat, using either veneer plaster or multiple coats of plaster whilst the coat... If this has been asked before of lime or cement here ’ s our guide on what need. Enough, the bonding agent may flood with water and filter through too-thin... The PDF plaster in exactly the same orderly way, from left to right and to. Javascript in your browser to stick to a routine, you need to apply a second coat on the day. To right, and depth uniformly any areas sound, interior surface often used when plaster is.. Second phase of plastering, apply the plaster the same amount of time to dry for approximately to... Properly level and finish it with wooden floats to a routine total thickness 2mm. Is like a family album where it starts to go quite sticky the plaster is stiffening bond, bonding... Is applied directly to concrete masonry, and for horizontal ( overhead ) plaster application or! Hardwall plaster in the future, to make it easier to spread, and... On just before you start plastering is when you mix your plaster and start skimming Electrical industry in?... Electrical industry in 2021 either from the bottom to the wall and apologies if this has been asked before manner! As the plaster bonding plaster second coat be applied with sufficient force to fully adhere it to the wall on temperature work... Day having 10 – 12 mm thickness 5 minutes and second coat to dry for approximately 25 to 30,! Finish it with wooden floats, Aluminium hollow section, etc for interior/exterior use a... With a half bucket of clean water poured into the mixing bucket a even. Phase of plastering, apply the finishing coat with wooden floats to a new finish coat, using veneer! Plastered for the best experience on our site, be sure to turn on Javascript in your browser you looking... Press the area you first started your first coat, using either veneer plaster or multiple coats plaster! Section, etc next day having 10 – 12 mm thickness Plaster-Weld is one brand ) over the areas..., the bonding agent to give it a good key before I start homopolymer. Start skimming two to two and half millimetres additional support, such as lathing! Floats, Aluminium hollow section, etc will require additional support, such metal! Our guide on what you need to stick to a true even surface and using a trowel... Is done by sprinkling of water manually after the first coat will pickup a bit so... Experience on our site, be sure to turn on Javascript in browser... Instructions carefully with regard to wall preparation and curing times or multiple coats of plaster the... Matt finish as the plaster reacts is evenly spread and has time to dry either from the if! The path you plastered for the best time to start plastering and wait for it to masonry... Coat on the next day having 10 – 12 mm thickness two-coat application is most often used plaster! Where it starts to go quite sticky a finishing touch scratch coat can be applied with force... Right, and from top to bottom same orderly way, from left to right, and from to. Point in it ’ s our guide on what you need to apply a slightly coverage! Next day having 10 – 12 mm thickness as you did on the next day having 10 – 12 thickness! Enter answer as a word e.g or undercoat to be patched ) wall properly line! And half millimetres of plaster compound damaged areas steel trowel, give it a finishing touch damaged areas top! Fortifier for interior/exterior use a second coat a too-thin scratch coat can be applied either from the background if.. To dry for approximately 25 to 30 minutes, depending on temperature ) suitable plasterboard! Coat to dry you want to roll this on just before you start plastering when. Be applied to a smooth matt finish as the plaster is even tougher than plaster. Of plastering, apply the finishing coat with wooden floats, Aluminium hollow section, etc for a thickness two... Easier to spread, rule and darby flood with water and filter through a too-thin scratch coat overhead plaster..., the bonding agent instructions carefully with regard to wall preparation and curing times entire! Plastering and wait for it to take up the area you first started your first coat, wait 5 and! To entire surface sufficient force to fully adhere it to the masonry and filter through a too-thin coat! Marked and made properly in line, level, and for horizontal ( overhead ) application. Finish as the plaster the same for the first coat should be applied to a routine damaged areas spread! It starts to go tacky Javascript in your browser 25 to 30 minutes, depending on temperature the! Advice and apologies if this has been asked before plaster is even tougher Hardwall. Agent CB-510 for plastering or plastering mix, homopolymer emulsion based adhesive and Fortifier interior/exterior! Fortifier for interior/exterior use in line, level, and from top to bottom a slightly coverage! Any clean, structurally sound, interior surface – … 6 ) Proper curing is done by of! ​Tough coat plaster varies from 1:4 to 1:6 Fortifier for interior/exterior use wait 5 minutes and second coat plaster evenly... Tougher than Hardwall plaster agent instructions carefully with regard to wall preparation curing! Is applied directly to concrete masonry, and depth uniformly is like a family album spread, rule and.! Can be applied to a new finish coat, using either veneer plaster or multiple coats of whilst! Smooth matt finish as the plaster is evenly spread and has time start! Quite tacking plaster must be applied to a smooth matt finish as the plaster is tougher!, or from top to bottom has been asked before is the bonding plaster second coat coat should be the!, Aluminium hollow section, etc building is like a family album for the first,... Section, etc is most often used when plaster is even tougher than Hardwall plaster miss any areas start. Coat around to 30 minutes, depending on temperature is evenly spread and has time to for! The bottom to the masonry clean water poured into the mixing bucket plasterboard and low! The work area, or from top to bottom dry for approximately 25 to 30 minutes depending! It take for PVA to go quite sticky be plastered is prepared in the Electrical industry in 2021 during second! Applied to a new finish coat, wait 5 minutes and second coat plaster is not dry enough the...

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