How To Fit Plasterboard

Plasterboard is one of the most popular building materials used in the construction industry. It’s mainly used to build up internal walls, ceilings and partitions. It provides a smoother surface that will be ready for decorating or plastering.
There are a few ways to install plasterboard, and the best one for you will depend on the type of wall or ceiling you are working on. Plasterboard is most commonly fixed to timber studwork or metal frames using screws, but another method is the dot and dab. This involves applying plasterboard adhesive directly onto the wall in spaced-out dabs before pressing and fixing the board. It can be a quick, effective way to create a smooth finish.
Fitting a plasterboard the right way is important as this helps make sure that it is strong and has been given a professional finish. An incorrect fitting can mean there may be visible joints and cracks, and it can even reduce the effectiveness of the fire and acoustic performance.
This guide will explain how to fit plasterboard, what to do before you start and the differences between fixing plasterboard to timber studwork and a metal frame.

Quick Answer On How To Fit Plasterboards

When fitting plasterboard, start off by measuring the area and then cutting the board to the size you need. Hold the boards in the right position against the timber or metal and secure them there using the correct plasterboard screws. If possible, make sure to stagger the joints and leave some small gaps so there will still be some movement. Once it has been fitted, use scrim tape and fix the seams of the joints in place, or you can prep the surface for when you are ready to plaster. The fixing method that is best for you will depend on whether the plasterboard is installed on timber stud, joists, metal stud partitions or dot & dab.

What You Need To Fit Plasterboard

Before you fit your plasterboard, check that you have the correct materials and tools. Online at Trade Insulations, you can order a range of plasterboard products this includes moisture-resistant, fire-rated and acoustic plasterboard. These are also available in a range of brands, including Knauf, Siniat, British Gypsum etc. You can buy plasterboard from our Trade Insulations website.

Generally, when fitting, you will need plasterboard sheets, a tape measure, stanley knife, straight edge, and a screw gun or screwdriver. Also, depending on the frame you are using, you will need screws that will be suitable for the correct frame. If you have timber studwork, then it’s best to use timber plasterboard screws. Whereas, for metal framing, it would be best to use self-drilling screws. If you are using the dot and dab method, you will also need a suitable plasterboard adhesive, mixing bucket, a drill with a paddle mixer (only if you are using a powder adhesive), plastering trowel, spirit level. With this method, while the adhesive sets, you may need a wedge to support and keep the boards level.
Safety equipment is one of the most important things that you will need. Make sure to wear gloves when you are handling the boards, when you are cutting wearing safety glasses and if you are creating multiple cuts in a board to wear a dust mask.
If you are fitting a ceiling board, make sure to use lifting equipment, otherwise, assistance might be required if you don’t have access to the equipment. Plasterboard sheets can be heavy and awkward if you are lifting alone, so please take care when you are attempting to install them.

Before you start

Before you install the plasterboard, check over the frame carefully. If you are using timber or metal studs, the frame needs to be straight, secure and have the correct spacing.
Also, checking for electrical wires, pipes, vents and anything else that would be behind the wall or ceiling. Any work that needs to be fixed first needs to be completed before you start boarding.
If you install the insulation within the partition or ceiling void, you must make sure that it has been fitted correctly before you start to cover it with the plasterboard.
You will also need to confirm with building control that the plasterboard you are using is the correct type. The main reason for this is that bathrooms, kitchens, garages and fire-rated buildings will probably require specialist boards that meet the requirements of the space.
Always make sure to check over the manufacturing brand’s installation guidance.

How To Fit Plasterboard: Step By Step Guide

Below, you can see a breakdown of the steps involved in installing plasterboard

Step 1: Measure the Area

Start by taking measurements of the wall or ceiling before you cut the board. Take note of these, specifically the height and width of each section and observe any openings that would be available for doors, windows, sockets or wiring.
Taking careful, accurate measurements will help you reduce your overall waste and make sure that the board fits the space. It’s also a good opportunity for you to plan where the joints will be, as they should be positioned over these.
Double-check all your measurements and board dimensions before moving on to the next step, cutting.

Step 2: Cut the Plasterboard

The next step starts with you marking up the board; make sure to use a straight edge for this. Score the board with a Stanley knife and snap along the cut line you will have drawn.
Once you have snapped the board, cut through its backing to make sure you have separated the board completely. Use a plasterboard saw when you are cutting out around sockets, pipes, etc.
The more accurate your cuts are, the more this will help you to create tighter joints and give you better results overall.

Step 3: Position the First Board

Lift the board and put it into position; it needs to sit square against the frame. Start this in one corner and then work your way across.
If you can, we recommend installing your boards vertically on a wall, and then you will be able to stagger your joists between every other row. This will help improve the strength of the wall and reduce the likelihood of anything cracking.
This step is key before you start inserting your fixings.

Step 4: Fixing Plasterboard to Timber Studwork

If you are fixing your boards to timber studs or joists, it is important to use plasterboard screws as these are designed for timber work.
For the best results, position the screws 12mm away from the edges of the board. Once screwed in, make sure that they have been spaced evenly. To avoid damaging the paper facing or weakening the fixing itself, don’t drive your screws in too deeply.
The board should sit firmly against the timber with no gaps. Repeat this across the wall or ceiling until the area is covered.

Step 5: Fixing Plasterboard to Metal Framing

When you are fitting the plasterboard to the metal frame, make sure that you are using the self-drilling screws, as these are best suited to metal frames.
Starting from the centre of the board, work your way outwards to stop any sudden movements or bowing occurring. The screws must penetrate the metal without stripping the fixing.
Try not to overtighten the screws, as this can cause damage to the plasterboard surface. Check that all the edges of the board are definitely supported by the metal frame.

Step 6: Fitting Plasterboard Using the Dot and Dab Method

If you are fixing plasterboard to a solid masonry wall, the dot and dab is recommended as it is a quick, effective alternative method to the timber or metal framing.
Mix the plasterboard adhesive according to the manufacturer’s instructions, then apply it in spaced-out dabs to the area. The dabs should be around the edge of the board and in vertical rows down the centre to provide the board with maximum support.
Lift the plasterboard into position and press it against the adhesive. Use a spirit level to ensure that the board is level. Use a packer or wedge at the bottom of the plasterboard to make sure that there will be a small gap from the floor once the adhesive has set.
Repeat this process for each board, making sure that all joints are aligned and that the boards fit together before moving on to taping and finishing the joints.

Step 7: Tape and Finish the Joints

Once you have installed all of your boards, check over the joints and fixings. If you are using the foil tape for the board joints, you will need to cover this with a joint compound.
However, the plasterboard can be prepared for skimming using plaster if you need to.
Check that the screws are positioned slightly below the surface of the board. Do this without breaking the paper facing. Any areas that are damaged must be repaired before you start to decorate.

Common Mistakes to Avoid

The most common mistake when fitting plasterboard is not checking that the board edges have been supported properly. Any joints that aren’t supported might cause movement, and over time, the plasterboard could start to crack.
Another issue is using the wrong screws. Timber screws need to be used for timber studwork, and metal frames need self-drilling screws as these will work best with the metal sections.
Screws are often overtightened. If the paper facing of the plasterboard is torn or damaged in any way, the strength of the fixings can be reduced. The screws need to sit just below the surface without completely breaking through the board face.
If the joints aren’t positioned properly, this can also cause issues, such as creating weaker points. If you ensure that you have staggered your joints, this will ensure that all of the board edges are supported and will help to create a stronger frame.
A common mistake can be not applying enough adhesive or spacing the dabs too far apart. This can leave sections of the plasterboard without support, which can lead to movement or an uneven finish. Always make sure to follow the adhesive manufacturer’s guidance on the correct amount and spacing of the adhesive, as this will help you ensure that the boards are fixed securely to the wall.
Lastly, don’t ignore the requirements for the more specialised plasterboards. Moisture – resistant, fire – rated and acoustic boards all have specific areas that they are meant to be applied to, and these must be used where required. If you are unsure, please check with your builder.

When to Get Professional Building Help

Simple plasterboard projects can be completed by most DIYers. However, sometimes professional assistance is needed as larger installations or specialised builds can be more difficult.
If the project involves a fire – rated system, acoustic partition or a more detailed ceiling installation, you might need to consider utilising the help of a professional. Larger ceiling projects will usually be the most challenging, as this is due to the weight and size of the plasterboard sheets.
If you have to stick to building regulation requirements, you may also need professional help. The same applies if there are specialist performance standards that you need to achieve.
If the frame is damaged, uneven or not strong enough as an overall structure, we would advise that you address these issues before you install your plasterboard.

Plasterboard at Trade Insulations

Whether it’s boarding a stud wall, refurbishing a room or installing plasterboard into the ceiling, making sure that you have selected the right plasterboard is really important for professional results. As part of the Trade Group, Trade Insulations stocks a range of different plasterboard products, which include standard, moisture-resistant, acoustic and fire-rated. These are suitable for a variety of applications. As well as plasterboard, you can also find other insulation products, such as metal. We also sell other insulation products and accessories that may be useful, like insulated plasterboards, slabs and rolls.

Plasterboard FAQs