Another way to fill a hole in plasterboard is to enlarge the hole first to make a square of a suitable size. Then cut two battens (19 x 38mm timber will suffice) and make sure they are 100mm longer than the size of the square you have cut. Due to the nature of plasterboard and in a similar way hollow doors, they can become damaged quite easily. Thorough preparation is key to achieving a high-quality finish, so be sure to remove all traces of old plaster, dust and grease for the area you plan to repair Drive nails into the noggins at an angle to secure them to the joists. Using plasterboard that's slightly thinner than the depth of your ceiling, cut a piece the same size as the hole. Fix it in place with plasterboard nails along the joists and noggins. Step 3

So I'm guessing it's loose, echos slightly when you tap it, with a little bit of movement. Then, when you remove the wall paper you see something like this: Top Tip: At this point, many people will tell you to swipe over the hole with the palette knife/scraper in different directions with each layer rather than keep going over it the same way...When working with plaster, it's best to only work with small amounts on the hawk and trowel. Try to build up a rhythm so you can cover the patch repair before the plaster starts to set Once dry, you can gently rub down the plaster or filler, and then paint the repaired area to match the surrounding wall. How to Fill Large Holes in Plasterboard Once completely dry, sand over the filler gently, ensuring any seams are removed and that the layer of filler is not a raised patch in relation to the wall surface. With Bonding Coat, it contains really large particles. It's no good for a finishing skim, it's just too rough. It does however provide a really good key for a finishing skim coat. Therefore, don't worry too much about getting it smooth, just concentrate on getting the levels right i.e. it shouldn't poke out too far and there shouldn't be a dip. Measure and cut a new piece of plasterboard to fill the hole. Fix in place with plasterboard screws or nails. Mix up plaster, apply and leave to dry.

Very briefly, whilst I'm on the subject, there is one thing I really want to point out - as per the instructions of the Plasterboard adhesive, there is no need to PVA the masonry before you attach plasterboard, just clean down the masonry. You really do need to make sure it's cleaned down well, otherwise the adhesive will be attaching itself to dust and may separate from the wall in time. To repair a hole in a hollow door, wall, or ceiling, firstly trim the edges of the hole and make is square. Ironically, you actually have to make the hole larger before you can go about fixing it!Using plasterboard to fill a hole between plaster can be advantageous to using a base plaster/render (the stuff beneath the thin layer of finishing skim coats), for a number of reasons:

Spread a small blob over the hole and wait for it to dry. Once dry, get a 180-220 grit sandpaper and rub down until smooth and blended with the current surface. How do You Fix a Hole in Plasterboard on the Ceiling?Use a digital stud detector to locate studs, noggins and joists in walls and ceiling (Image credit: Getty Images) Can I Use Caulk To Fill Holes? If sanding plaster or cutting plasterboard, be sure to wear goggles and a dust mask and try to work in a well-ventilated space

But instead, I use my trusty (super flexible) squeegee or skimming spreader and sweep it over the area in a couple of directions and this creates a beautifully smooth surface which reduces the amount of sanding you have to do (a winner in my book!)

Give the masonry a good clean out with a brush and a vacuum cleaner, Remember to get the edges of the old plaster too, that'll be quite dusty and dust is not our friend. Now you will need a piece of plasterboard to fill the hole. Ideally this needs to be thinner than the current plasterboard. Measure and cut to fill the hole. Fix in place against the noggins with plasterboard screws or nails. Option 2 - Fill most of the hole with plasterboard, then the gaps with an undercoat plaster, then skim over Another complication that springs to light when you have unfortunately made a hole in a plasterboard wall or hollow door is the void behind it due to the construction of the stud work used to hold the plasterboard up or provide the framework for the door meaning that you can’t just use filler as there is nothing to bond it to.