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Can You Plaster Over WallPaper?

If you have wallpaper installed on your wall surface and you’re considering plastering the wall, when you put into consideration the stress involved in removing a wallpaper you may want to consider plastering directly over the wallpaper. This is quite understandable as removing a wallpaper can be quite time consuming and tedious, but plastering directly over wallpaper is a mistake that should never be made. Plastering over wallpaper is in no way a viable option due to the fact that it can only turn out disastrous after a couple of weeks or even days in some cases as the plaster will crack and crumble. As a result, you’ll have to firstly scrape off the wallpaper in order to assist the plaster get to be firmly secured to the wall behind.

When you plaster over a wallpaper, this will make the wallpaper wet and it’ll absorb the moisture. And once the plaster does not have moisture, the only result is for it to crack and start to crumble. Hence, plaster and wallpaper is never a good combination.

Asides from cracking and crumbling, anther issue is that the wallpaper will bubble. You can actually key the wallpaper with the help of a knife and it might look secured for some time, however it’ll eventually crumble and you’d have to scrape off the plaster complete to start all over again. The wallpaper will bubble as the plaster can’t be keyed into a wallpaper and the wallpaper will only work as a barrier between the plaster and the wall.

Overall, plaster always needs to slowly dry off as well as a good and proper surface to grip to. No matter the amount of PVA mix you spread on the wallpaper, it will always remain a barrier. So you’d have to remove the wallpaper completely to get a great result.

How To Plaster A Wall

In order to plaster your wall successfully, you’ll firstly need to get the appropriate tools and materials for the job in place. The tools you’ll need to have includes a trowel and bucket trowel, plasterer’s float, corner trowel, hawk board, two buckets, mixing stick or a paddle, adequate plaster, PVA , dust sheets, clean water, sandpaper, stilts or step ladder as well as a dust mask.

✓ Prepare the wall. You’d have to make sure that you lay down a dust sheet so as to protect your floor and also gather any possible spillage or debris of plaster, before you start working on the walls. Get rid of all the dirt, dust and debris as this is very important for the success of your project if you’re going to be plastering on a worn out and old wall. Also, cover the holes and cracks in the walls with a screen tape

✓ Apply PVA to the wall. This will help ensure the layer you’re using will not dry out at the same time.

✓ Mix the paster. Mix the plaster according to the instructions given in the manufacturer’s manual.

✓ Apply the plaster onto the wall. Upon cleaning of the walls and successful mixture of the plaster, the next step is to apply the mixture to the wall using the hawk board, trowels and a floating tool.

✓ Skim and smooth. After the the first coat has dried after waiting for about 30 minutes, the next step will be to wipe out the bumps and lumps using a trowel to smooth over the surface. Once this is done you can then scrape the wall with a devilling float.

✓ Apply the second coat of plaster

✓ Apply the finishing touches. This includes polishing your work by adding some water to the surface with a spray gun and using the trowel to further smoothen out the surface.

✓ Painting and wallpapering.

Artex was originally made using white asbestos to make it stronger. However, this stopped in the mid-1980s, and the use of asbestos was banned in the UK in 1999, due to its extreme health risks. So, any artex you buy today won’t contain asbestos.

If you have an artex ceiling or wall that was created before 1999, it may have asbestos in it. This won’t be a health hazard if you leave it undisturbed, so it’s not necessary to remove it. However, if you want to get rid of or alter your artex ceiling or wall, you must get it tested to check if it has asbestos in or not first. If it does, you’ll need to hire a qualified professional to work on it.

Plasterboard or drywall is simply gypsum plaster covered from both sides by thick paper layers. It’s known to be a highly versatile product used on both interior walls and ceiling as a result of its numerous advantages. This popular material in residential buildings can be designed to be fire resistant, humidity resistant and noise resistant. They have a low impact on the environment, while also being quite easy to repair and perfect to hide stuffs from plain sight. Most home and property owners in the UK have this material installed in their space as despite the multiple benefits, they’re also quite affordable. However, if you’re thinking about installing a plasterboard on your ceiling, one challenge you’re likely to face is determining the appropriate plasterboard thickness to incorporate as this make or mar your entire project. In this post, we’re going to take a look at the right plasterboard thickness for ceiling so as to help you make an informed decision moving forward. Let’s take a look!

Firstly, let’s consider the size of the plasterboard sheet. The standard plasterboard sheet size is 120 cm in width and within the range of 180 cm to 360 cm in height. These sizes are designed to provide the much-needed support to the standard stud spacing which is 160 cm. Depending on the manufacturer, plasterboard can be in four different widths. Now talking about the thickness, there are two standard thicknesses of plasterboard - 9.5 mm and 12.5 mm. The sizes of plasterboard for ceilings are 9.5 mm or 10 mm. Most individuals tend to assume that the thicker the plasterboard the better, but this is absolutely false. A thicker plasterboard will only stick harder to the ceiling which will make it hard to seal joints if required.

What Is Plaster Made Of?

Plaster is one of the most commonly used materials when it comes to building construction. It’s a crucial component that’s incorporated in coating walls, ceilings as well as partitions and it hardens on drying. Plastering is one of the most ancient building materials which has taken over mud to plaster reed or sapling huts so as to serve as a protection against the elements. Here, we’re going to take a look at the multiple compositions of plaster. These components are very important due to the fact that they form a protective coating on whatever they are used on. They work to protect surfaces such as ceiling and underlying walls from scratches or any form of damage.

Plaster comprises a few materials which includes gypsum, lime or cement and all operates in a similar way. Gypsum is made of calcium sulfate dihydrate and it’s the main component of main forms of plaster, sidewalk chalk, blackboard, drywall and more. Meanwhile, lime plaster is made up of sand, water and lime ( mostly non hydraulic hydrated lime). And lastly, cement which is a mix of suitable plaster, portland cement, sand as well as water.

The plaster is usually produced as a dry powder which is mixed thoroughly with water to create a stiff but also a paste that’s workable immediately before it’s applied to the wall or ceiling.

It’s quite easy to confuse a drywall with a plaster but there are some differences. Not only is plaster a much older style of wall construction than dry wall, but it’s also a lot more expensive than installing a drywall. Plaster walls are also able to provide you with a more durable finish when compared to a drywall and it makes for a better quality finish.

Can You Plaster Over Tiles?

Yes, it’s absolutely possible to plaster over tiles but just because is possible doesn’t mean you should. Plastering over tiles is an option but it’s not recommended by experts due to several reasons. A good example is the fact that a tiled environment is in no way a suitable environment that can serve as a good bonding surface for a plaster. For the success of a plastering project, there’s the need for the surface to be able to bond to the PVA base coat. Due to fact that most tiles are slippery in nature and also lack of the ability to be able to absorb moisture, the PVA base coat layer will not be able to bond to the tiled surface, which will ultimately make for a weak surface upon the application of the plaster. Consequently, the plaster will easily flake and fall from the wall.

The inability to drill into the tiled wall surface after plastering is one of the major disadvantages that also arises when you decide to plaster over tiled surfaces. Most tiled surfaces are found in kitchens and bathrooms which are going to need appliances such as sinks, lavatories, kitchen counters and lots more. These appliances are designed to be installed on solid surfaces which would not be an easy task to carry out on tiles knowing there would definitely be great cracks or damages.

The best tip you’ll get if you’re considering to plaster on a tiled surface, is that detaching tiles from a surface can easily be done with a hammer and chisel, and that would save you a host of problems later in the future. However, if you still wish to plaster on your tiled walls, then you best bet would be to get a Blue Grit bonding agent. It works better than PVA and only needs one coat.

Installing a plasterboard to a ceiling is not the easiest of tasks, and even though it can be done by one person, it’s usually a lot easier when done by two people. If you’re an experienced DIYer, this task becomes a lot easier to undertake, with both confidence and patience needed to ensure a successful outcome. If you lack these essential attributes, we’d strongly recommend you call in a reliable professional who can guarantee the best results for help. In this guide, we’re going to take you through the processes involved to plasterboard your ceiling. Let’s take a look!

✓ Take a measurement of your ceiling. Knowing the length and width of your room is crucial here. You have nothing to worry about if it’s not a perfect square as that’ll only mean more cutting.

✓ Make the necessary plasterboard cuts. Cut the plasterboard sheet with a utility knife in accordance to ceiling space measured.

✓ Remove existing plaster. Once done, examine the trusses and beams to ensure they’re still in a great condition before you proceed. Also, make sure there’s no loose plaster that can compromise your new installation.

✓ Apply construction adhesive. For a better fit, you’d have to apply adhesive along the beams while also avoiding the edges as this could affect your screw placement.

✓ Start in a level corner. You have to start the installation from the most level corner.

✓ Work along the outside edges. Secure it using a screw along the outside edge. This will make your plasterboard held to your ceiling perfectly. It won’t bend or break as your proceed with the installation.

✓ Complete the installation. Install the plasterboard on your entire ceiling and complete the installation by taping the seams and plastering for a smooth surface.

How Much Do Plasterer’s Charge?

If you’re look to plaster your walls, one of the first things that’ll come to mind is the cost to complete the project so you can set a budget and start planning as soon as possible. However, the amount charged by plasterer, just like other tradesmen, is based on a number of factors. These factors include how urgent the project is, how long it’ll take as well as what materials are needed. Some of the other influencing factors of plastering jobs include the accessibility of the location, the size of the wall to be plastered and also the current condition of the old plaster. Therefore, you can expect a plaster work of multiple rooms with deteriorating old plaster to be more expensive than a simple refresh of a single wall in a relatively good condition.

It’s likely you’d also get the average cost per room reduce when you require the plastering of several rooms. As a result, to get a final price for your plastering work, you’ll have to call in a qualified and experienced tradesman who’ll consider all the unique requirements of your project and provide a suitable quote.

✓ Medium sized room plastering. A medium sized room would be a room that’s roughly between 3.5m by 5m or one that can comfortable accommodate up to 8 individuals. This will cost within the range of £520 to £870.

✓ Small sized room plastering. Small room such as small kitchens, box bedrooms, utility rooms and the likes will require less plaster but more intricacy with the plasterer having to work in tight spaces. This will cost within the range of £215 to £370.