Introduction. ThistleBond-it is a plaster-bonding agent for use on smooth and/or low suction backgrounds. It provides a mechanical key by means of coarse aggregate particles. It is used in one coat only and allowed to dry before plastering.

Also to know is, what is Thistle bonding used for?

Thistle Bonding Coat is a gypsum undercoat plaster for use on low suction backgrounds, e.g. some brickwork, blockwork or concrete, Gyproc plasterboard, expanded metal lath, or surfaces treated with bonding agents.

Secondly, can you use thistle bond outside? I personally would never use thistle bond-it externally but.. the knauf equivalent betokontakt can be used externally and is more or less the same thing as is microgobetis from parex.

Similarly, you may ask, how long does Thistle bonding last?

KIAB Super Member. Bonding about 2-3 hours, but some do leave it to following day before skimming depends on size of area. The 3-4 days is a guide, the colour of the plaster will tell you when it's dry enough to paint.

How do you mix Thistle bonding?

How to mix up bonding plaster

1. Add the water. Start with a half bucket of clean water poured into the mixing bucket.
2. Add the plaster and mix. Then add the bonding plaster to the bucket and start to mix with the drill and paddle, slowly adding more plaster as you go.
3. Mixing the plaster thoroughly.
4. Take your time.

Related Question Answers

Should you PVA before bonding?

PVA brick work, apply bonding, then PVA existing wall. When bonding has firmed up, 2-3 hrs, apply another coat of PVA over the lot and when tacky, skim away. If I'm bonding a whole wall out, then I wouldn't PVA before skimming as long as I can get it on the same day.

Does Thistle bonding go off?

The official shelf life of Thisle bonding is 4 months apparently. What is the risk of using a bag that is significantly older (6-12 months) but has been stored cook and dry? TIA.

How thick can you put bonding on?

Both bonding and browning plasters are considered undercoat plasters. Undercoat plasters are typically applied at 8mm thickness for ceilings and 11mm thickness for walls. Following application of undercoat layers then a finish coat is added which should be 2mm thick normally.

Can I tile onto bonding plaster?

You don't tile onto bonding - finish plaster or one coat plaster, yes, but not bonding or browning.

Can you plaster over bonding the same day?

If applying a bonding coat it should be skimmed the same day so ideally should be on the wall by mid-morning to give it time to take up. ALWAYS devil float it :RpS_thumbup: A competent plasterer will be able to skim a bonded wall the day after, perhaps splashing a small amount of water on it after scraping it down.

What does bonding a wall mean?

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. 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.

When should I use bonding plaster?

When To Use It is ideal for walls and ceilings that have a smooth finish, where other plasters would struggle to bond without a key, this one just sticks. Also, bonding plaster is great for putting a base coat on surfaces such as concrete.

Can you tile over Thistle bonding coat?

You don't tile onto bonding - finish plaster or one coat plaster, yes, but not bonding or browning.

Is SBR better than PVA?

One key difference is that, whereas PVA remains water soluble after drying, once dry SBR is not. Consequently, the SBR bonding agent is more suitable for situations where damp might be a factor, such as external finishes, shower areas and swimming pools, as well as in sand or cement screeds and renders.

Can you plaster on wet bonding?

PrenticeBoyofDerry. You can plaster on to your base coat as soon as it has stiffened up, does not need to be dry. Make sure any loose plaster and paint is removed from wall and any dirt or grime too, before PVA is applied.

Does bonding stick to wood?

Plastering wood is possible but you need to prepare it properly first. Plaster will not properly adhere to wood on it's own – so a physical key is needed. You first need to fix either metal lathing or wooden laths to the timber.

Do you scratch bonding coat?

These surfaces are where you would use bonding plaster as a scratch coat. 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.

Should you PVA before plastering?

PVA glue can be applied immediately before the skim coat is applied having allowed the PVA glue dilution to have become tacky before plastering. Alternatively an extra coat can be applied and both allowed to go dry in advance of the re plastering of the wall.

How do you mix up bonding?

How to mix up bonding plaster

1. Add the water. Start with a half bucket of clean water poured into the mixing bucket.
2. Add the plaster and mix. Then add the bonding plaster to the bucket and start to mix with the drill and paddle, slowly adding more plaster as you go.
3. Mixing the plaster thoroughly.
4. Take your time.

Is undercoat plaster the same as bonding?

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. Hardwall Plaster: Hardwall is similar to Browning except that it offers a higher impact resistance and quicker drying surface.

Can I use bonding to dot and dab?

The dot and dab plasterboard method is also known as drylining, and involves directly bonding plasterboard to flat and secure walls that have a key, such as masonry and blockwork. It also means you can finish and decorate walls straight away.

What is a bonding?

Definition of bonding. 1 : the formation of a close relationship (as between a mother and child or between a person and an animal) especially through frequent or constant association. 2 : the attaching of a material (such as porcelain) to a tooth surface especially for cosmetic purposes.

Can you use out of date bonding?

You can use plaster that is a couple of months out of date because when it is bagged, they always add a margin of uncertainty to ensure that it is still useable up to the expiry date. To conclude, you should always use expired plaster with caution.

What is a plaster bonding agent?

bonding agent is a patented formulation incorporating polyvinyl acetate homopolymer. Uses: Designed for interior use only, Plaster-Weld® provides high performance bonding of one-coat finish plaster and/or two and three coat work to concrete ceilings, walls, columns, beams, and other structurally sound surfaces.

What is green grit?

Bostik Plasterer's Stabilising Primer with Plasprime® Technology (formerly known as Cementone Plasterer's Stabilising Primer) has been specially developed for the plastering professional. Bostik Plasterer's Stabilising Primer is green in colour for easy application and contains 20% recycled material.

What is Febond blue grit?

Febond Blue Grit is a high-performance plasterers grip coat bonding agent specifically designed to provide an improved key to smooth surfaces. Containing a fine aggregate, it provides a mechanical key to backgrounds such as plaster, concrete, painted surfaces, textured surfaces and ceramic tiles.

How do you apply liquid bonding?

Apply the BONDING LIQUID by means of a brush or roller. While the BONDING LIQUID is still wet apply a thin “slush coat” (1 part cement, 2 parts sand and 10% BONDING LIQUID water replacement) by means of a block brush or Terylene machine. Allow the slush coat to dry and then plaster in the usual manner.

Where do you apply bonding plaster?

Bonding can be applied to really dense concrete blocks or engineering bricks and even concrete itself. These surfaces are where you would use bonding plaster as a scratch coat.

What is bonding compound?

The Bonding Compound is specifically used to bond plasterboard to a wall and is also suitable for use with GTEC Thermal Boards and the GTEC Shallow Wall Channel.

Can you paint on bonding plaster?

You can paint it but It is very absorbent and will suck. I would give it a lick of contract matt watered down 50/50 then a few coats at 70/30 then finish with a 90/10 coat.

How do you mix plaster Thistle?

Mixing the plaster Pour the required amount of water into the mixing bucket (see selector chart for details). Only add clean water and do not use any additives. Add plaster to the water and mix by hand or a slow speed, high torque mechanical whisk. Thistle plasters should be mixed to a smooth creamy consistency.

Can I use bonding plaster on brick?

Bonding can be applied to really dense concrete blocks or engineering bricks and even concrete itself. These surfaces are where you would use bonding plaster as a scratch coat.

Can I mix plaster by hand?

Plaster mixing can be done by hand with a suitable bucket and a piece of wood to do the mixing, however it is much easier to mix plaster using either a plaster mixing machine or a suitable drill with a mixing paddle.

How do you mix a small amount of plaster?

Here's our guide to mixing it in the correct way.

1. Add the materials. Pour half a bucket of clean water and half a bag of finishing plaster into your mixing bucket.
2. Mix the contents.
3. Add more plaster.
4. Mix thoroughly again.
5. Use your bucket trowel.
6. Check consistency.
7. Cleaning equipment.
8. Use your mix.