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You can plaster directly over hardwall the day after. As Wine~o said, pva either day before or prior to skimming. Try not to over saturate the hardwall as it will blister.
Can you Hardwall over Hardwall?
Hardwall is gypsum based so is not ideal to use on a solid wall in an older property. It will adhere fine, as it’s designed to go over brick and blockworkyou don’t pva, just wet the wall, but you would be better with either sand and cement or a renovating plaster due to the possibility of damp coming through.
Can I paint over Hardwall plaster?
Thistle plasters can be decorated with most paint finishes and wallcoverings. A permeable paint can be used in the interim. Take care with Thistle Hardwall which dries from the surface, appearing surface dry before it is fully dry in depth.
Is Multi finish plaster OK for plasterboard?
A versatile finish plaster for use on common backgrounds including undercoat plasters and plasterboard. Thistle MultiFinish is the most popular universal skim finish plaster for common backgrounds; it can be used as part of a two-coat plaster system or on plasterboard.
What is Hardwall plaster used for?
Hardwall plaster is an undercoat plaster that is most commonly used with masonry backgrounds like bricks and medium-density blocks.
Can you tile straight onto Hardwall?
If you are part tiling a wall of hardwall, you are obviously better to skim it all. If you want a surface to tile, sand and cement is the one, but any sound skimmed surface will do you. You can tile onto hardwall and it will last, and you can get hardwall closed in good enough with fat to help the tiler.
Can you tile over multi finish?
At least its new plaster so if it’s been applied correctly, then it’s unlikely to delaminate. Make sure it’s dried out well, couple of coats of primer then off you go. You’ll need flexible tile adhesive (bagged) for porcelain.
Which plaster is best for walls?
Cement plaster is the best bet when it comes to plastering exterior walls because it is moisture-resistant and will protect the wall against climate changes as well as environmental pollution. Moreover the durability factor in cement plaster makes it the ideal choice for internal plastering too.
Does Hardwall go off?
Kitchy said: Mate hardwall goes off quick in the best of times is it really worth it in using 2 bags!Mar 3, 2016
Is board finish better than multi finish?
Board Finish is for low to medium suction whereas Multi-Finish is for nearly all variations of suction.
How much does a bag of Hardwall coverage?
Thistle HardWall
| Order Code | Nominal bag weight (kg) | Approx coverage (m²) |
|---|---|---|
| 06110/3 | 25 | 3.0 |
Can I tile onto undercoat plaster?
yes you can,but it would be better with a finish coat,there will be to much suction on browning/bonding so you will have to kill the suction with uni-bond/water mix,leave for 24 hours and then tile straight onto the backing coat.
How long does Hardwall take to go off?
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.
Can you tile on Carlite bonding?
Can you tile on Carlite bonding? I spoke to the plasterer this afternoon and he has told me that carlite bonding is perfectly ok to tile on providing the suction has been neutralised by applying something like Bal Bond SBR prior to tiling.
What’s the difference between plastering and skimming?
Skimming is the name given to a plastering technique where a wall is plastered with a layer of thin coat. It is usually applied to an existing plaster to smooth the surface. Another difference between skim and plaster is that plaster surfaces are always rough whereas a skimmed surface is smooth.
How long before plastering should I PVA?
Nojob Smallenuf New Member. Not a plastering expert but I think the routine is to apply 1 coat of PVA and allow to dry fully i.e. 24 hrs., and then apply second coat of PVA maybe 1 hour or so prior to application of plaster. The second coat should be tacky rather than dry.
Can you use SBR instead of 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.
Why is Hardwall plaster cracking?
If the background has a lot of suction/or is very dry, the plaster will crack as the moisture is absorbed too quickly into the substrate,, it needs prep first, to control the suction. Too much heat will do the same by drying the plaster to quickly causing it to shrink and crack.
Can I use board finish on Hardwall?
rule of thumb is board finish for low suction, multi for high suction relatively speaking.. boardy does work nice over hardwall or bonding if you want to get on it a bit quicker than normal..
What is the difference between bonding and Hardwall?
bonding is a undercoat plaster for low suction background like concrete. hardwall has high impact resistance and is quicker drying.
Should I PVA before Hardwall?
You should put PVA on, but you cannot tile onto hardwall. It will need to be gone over with multifinish and then allowed to dry. A tiling sealer (not PVA) should then be applied prior to fixing tiles.
Is finishing plaster the same as multi finish?
Finishing plaster is applied over the top of either bonding/browning or over plasterboard. This multi finish from British Gypsum is probably about the best around as it is suitable for most surfaces. Board finish is also available, this is only for use on plasterboard and cannot be used on browning or bonding plaster.
Where should Hardwall plaster be used?
Hardwall Plaster: Hardwall is similar to Browning except that it offers a higher impact resistance and quicker drying surface. It is the most often used undercoat plaster these days, and can be applied to most masonry surfaces.
